Sheet Plate And Coil

Doshi Impex India - 441 Sheet - Stainless Steel 441 - SS 441 sheet - Stainless steel 304 sheet  - Doshi Impex Stainless Steel sheet 441 - AISI 441 -  Stainless steel grade 441 is a ferritic stainless-steel containing niobium that provides the steel good oxidation and corrosion resistance. This steel provides good high-temperature strength in exhaust gas environments, and has good for deep drawing, good ductility, good weldability, and good brightness. It polishes well. The 441-flat rolled stainless steel possesses magnetic quality in all conditions. This grade may be used in the annealed, cold formed or as-welded condition in applications where other stainless steels such as Type 304/304L and Type 430 are used. Type 441 has good weldability due to titanium and niobium stabilization and has excellent resistance to stress corrosion cracking. Type 441 outperforms Type 409 in both oxidation and corrosion resistance and typical applications include automotive manifolds and exhaust system components. The high temperature strength of Type 441 exceeds that of both Types 439 and 409 stainless steels.
 
Processing / Welding
Standard welding processes for this steel grade are:
TIG-Welding
 MAG-Welding Solid Wire
Arc Welding (E)
 
Applications
Grade 441 stainless steel is applied in catering equipment and automotive-exhaust system components.
Indoor cladding
Restaurant equipment and appliances
Tubes
Heat exchangers

Stainless steel 441 sheet For Elevators & Lift Components 
441 sheet For Elevators & automotive-exhaust system components
SS 441 sheet For Heat exchangers
1.4509 sheet For Heat exchangers 
SS 441 coil For Heat exchangers 
Magnetic 441 sheet For Heat exchangers

Doshi Impex (India) is amongst the global leaders from INDIA, reputed for being known as Exporters, Importers, Suppliers, Stockists and Traders of superior quality STAINLESS STEEL PRODUCTS and RAW MATERIALS.
Stainless steel is the most common steel. The steel contains both chromium (between 18% and 20%) and nickel (between 8% and 10.5%) metals as the main non-iron constituents. It is an austenitic stainless steel. It is less electrically and thermally conductive than carbon steel and is essentially non-magnetic. It has a higher corrosion resistance than regular steel and is widely used because of the ease in which it is formed into various shapes.
INTERNATIONAL STANDARDS, CLIENT SPECIFICATIONS, and QUALITY CONTROL are of utmost importance to Us.
Thickness like:  0.5 mm / 0.6 mm / 0.8 mm / 0.9 mm / 1 mm / 1.2 mm /1.6 mm / 2.00 mm / 2.5 mm / 3.00 mm 
Size = 8 foot x 4 foot / 1 mtr x 1 mtr / 1250 mm x 2500 mm / 1220 x 2440 mm / 1 mtr x 2 mtr / 1220 mm x 2000 mm / 1250 x 3000 mm / 1500 mm x 3000 mm / 1500 x 5 mtr / 1500 x 6 mtr / 1250 x 5 mtr / 1250 mm x 6 mtr & as per customers cutting size

Carbon steel plates are made from an alloy comprised of iron and carbon. Carbon Steel Plate is one of the most commonly used steels in the United States. Alloy steels can contain a variety of elements including chromium, nickel, and vanadium.

Durability. The biggest benefit of carbon steel is its durability. It is strong and shock resistant, which is why it makes such a beneficial material for construction projects. The average tensile and yield strength of a piece of carbon steel can vary tremendously depending on the steel's carbon content and other manufacturing factors.

categorize steel types into four groups—Carbon, Alloy, Stainless, and Tool

En19 Alloy Steel Is Widely Used For Engineering Steel Purpose, Such As: Making Various Kinds Of Machinery, Automobile, Mining Spare Part, The Gearwheel Of The Engine, The Driving Gear Of Supercharger, The Connecting Rob, The Pinchcock Under The High Pressure, Parts For Power Train Applications, Cold Formed Fastener Components, Shafts, Gears, Drill Collars For The Oil Exploration, Etc.

Applications
Chemical Processing Equipment – In fluorine, hydrofluoric acid, hydrogen fluoride, hydrochloric acid, sulfuric acid, neutral and alkaline salt solutions, caustic alkalis, non-oxidizing halides and dry chlorine service.

Marine Components – shipbuilding, valves, pumps, shafts and in sea and brackish water

Oil and Gas Production – splash-zones for offshore structures and sour gas applications

Ore Processing – uranium refining and separation in the production of nuclear fuels

Petroleum Refining – alkylation units, crude petroleum stills, piping and storage tanks

Power Generation – feed-water heaters and steam generators

Water Treatment – brine heaters and evaporators in seawater desalination plants

50CrV4 Alloy Steel Sheet
50CrV4 Alloy Steel Plate
50CrV4 Alloy Steel Coil
4140 Alloy Steel Plate
4140 Alloy Steel Sheet
4140 Alloy Steel Coil
En19 Alloy Steel Sheet
En19 Alloy Steel Plate
En19 Alloy Steel Coil
4130 Alloy Steel Sheet
4130 Alloy Steel Plate
4130 Alloy Steel Coil
42crmo4 Alloy Steel Sheet
42crmo4 Alloy Steel Plate
42crmo4 Alloy Steel Coil

Alloy 17-4PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572F /300C), and corrosion resistance. Mechanical properties can be optimized with heat treatment. Very high yield strength up to 1100-1300 MPa (160-190 ksi) can be achieved. A Precipitation-Hardening Martensitic Stainless with High Strength and Hardness and Good Corrosion Resistance. Alloy 17-4PH (UNS S17400), Type 630, is a chromium-nickel-copper precipitation-hardening martensitic stainless steel with an addition of niobium. 17-4PH combines high strength and hardness with good corrosion resistance.

The alloy is furnished in the solution annealed condition (Condition A). It should not be used at temperatures above 572F (300C) or for cryogenic service. Optimal mechanical properties can be obtained by subjecting the alloy to age hardening heat treatments. Heat treatment in the 900F (482C) range produces the highest strength. The corrosion resistance of Alloy 17-4PH is comparable to 304 stainless steel in most environments & is generally superior to the 400 series stainless steels. It is used in applications where the combination of moderate corrosion resistance and unusually high strength are required.

Alloy 17-4PH can be easily welded and processed by standard shop fabrication practices. It is magnetic.

Specification

Alloy 17-4PH (UNS S17400)
W. Nr. 1.4542 Type 630

Corrosion Resistance
The corrosion resistance of Alloy 17-4PH is comparable to 304 stainless steel in most environments, and is generally superior to the 400 series stainless steels. It is used in applications where the combination of moderate corrosion resistance and unusually high strength are required. Alloy 17-4PH has corrosion resistance comparable to 304L in some chemical, dairy, food, paper and petroleum applications.

Alloy 17-4PH in the solution-annealed condition (Condition A) should not generally be put in service. The alloy is subject to brittle fractures and more sensitive to chloride stress corrosion cracking than the aged material. If risks of chloride stress corrosion cracking are present the higher aging temperatures should be selected over 1022F (550C), preferably 1094F (590C). 1022F (550C) is the recommended tempering temperature in chloride service. 1094F (590C) is preferred in H2S media.

Alloy 17-4PH is subject to crevice corrosion and pitting attack when exposed to stagnant seawater for duration of time.

Applications
Aerospace - structural and parts
Biomedical - hand tools
Chemical Processing
Food Process Equipment
Gate Valves
Mechanical Components
Nuclear Waste Processing and Storage
Oil and Gas Production - foils, helicopter deck platforms, etc.
Pulp and Paper -paper mill
Equipment

Standards
ASTM A 693
ASME SA 693
AMS 5604

Alloy 17-4PH can be easily welded and processed by standard shop fabrication practices. It is magnetic.

Heat Treatment
Alloy 17-4PH is provided in the solution-annealed condition (Condition A). Mechanical properties may be altered by subsequent age hardening treatments. These aging treatments are referred to as Conditions H900, H1025, H1075, H1150, H1150M and H1150D.

17-4 PH Stainless Steel is available in 17-4 PH Stainless Steel Sheet, 17-4 PH Stainless Steel Plates, 17-4 PH Stainless Steel Tubes, 17-4 PH Stainless Steel Pipes, 17-4 PH Stainless Steel Bars, 17-4 PH Stainless Steel Flanges, 17-4 PH Stainless Steel Fittings

Nickel-Iron-Chromium Alloys Designed to Resist Oxidation and Carburization with Higher Creep and Stress Rupture Properties than Alloy 800 (UNS N08800)

Alloys 800H (UNS N08810) and 800HT (UNS N08811) are dual-certifiable Nickel-Iron-Chromium materials that resist oxidation, carburization and other high temperature corrosion. The chemical composition of the two alloys are identical to Alloy 800 (UNS N08800), with the exception of the higher level of carbon present in both grades— (0.05–0.10%) in alloy 800H, and (0.06–0.10%) in alloy 800HT. Alloy 800HT also has an addition of up 1.0 % aluminum and titanium. In addition to the chemistry restrictions, both alloys receive a high temperature annealing treatment that produces an average grain size of ASTM 5 or coarser. The restricted chemical compositions, combined with the high temperature anneal, assure these materials have greater creep and rupture strength when compared to Alloy 800.

Alloy 800H has good creep-rupture properties at temperatures above 1100°F (600°C). It remains ductile during long term use at temperatures below 1290°F (700°C) due to a maximum titanium and aluminum content of 0.7%. Alloy 800 with a standard anneal is recommended for service below 1100°F (600°C). Alloy 800H resists reducing, oxidizing and nitriding atmospheres, as well as, atmospheres that alternate between reducing and oxidizing. The alloy remains stable in long term high temperature service.

Alloy 800HT has excellent creep strength at temperatures above 1290°F (700°C). If the application involves frequent temperature excursions under 1290°F (700°C) or parts of are permanently exposed to a temperature below 1290°F (700°C), Alloy 800H should be utilized. The high temperature resistance of Alloy 800HT is comparable to Alloy 800H. It also remains stable in long term high temperature service.

Alloys 800H and 800HT are easily welded and processed by standard shop fabrication practices.

Specification
Alloy 800H/800HT (UNS N08810, UNS N08811)
W. Nr. 1.4958, 1.4959

Standards
ASTM B 409
ASME SB 409
AMS 5871

Corrosion Resistance
The high nickel and chromium content of Alloys 800H and 800HT generally means they will have very similar aqueous corrosion resistance. The alloys have corrosion resistance that is comparable to 304 when used in nitric and organic acid service. The alloys should not be used in sulfuric acid service. They are subject to chromium carbide precipitation if in service for prolonged exposure in the 1000-1400°F (538-760°C) temperature range. Since Alloys 800H and 800HT were developed primarily for high temperature strength, corrosive environments to which these grades are exposed normally involve high temperature reactions such as oxidation and carburization.

Alloys 800H and 800HT can be easily welded and processed by standard shop fabrication practices. However, because of the high strength of the alloys, they require higher powered process equipment than standard austenitic stainless steels.

Applications
Chemical and Petrochemical Processing—process equipment for the production of ethylene, ethylene dichloride, acetic anhydride, ketene, nitric acid and oxy-alcohol

Petroleum Refining—steam/hydrocarbon reformers and hydride alkylation units

Power Generation—steam super-heaters and high temperature heat exchangers in gas-cooled nuclear reactors, heat exchangers and piping systems in coal-fired power plants

Thermal Processing Fixtures—radiant tubes, muffles, retorts and fixtures for heat-treating furnaces

Grade 303 represents the optimum in machinability among the austenitic stainless steels. It is primarily used when production involves extensive machining in automatic screw machines. Alloy 303 is a non-magnetic, austenitic, free-machining stainless steel that is a modification of the basic 10% chromium -8% nickel stainless steel specially designed to exhibit improved machinability while maintaining good mechanical and corrosion-resistant properties. Stainless steel is a family of iron-based alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting as well as providing heat resistant properties. Different types of stainless steel include the elements C (from 0.03% to greater than 1.00%), N, Al, Si, S, Ti, Ni, Cu, Se, Nb, and Mo). Stainless steel are often designated by a three digit number.

The sulphur addition which is responsible for the improved machining and galling characteristics of Grade 303 lowers its corrosion resistance to below that of Grade 304. As for other austenitic grades the structure gives 303 excellent toughness, although the sulphur in 303 reduces its toughness slightly. Grade 303Se has a selenium rather than sulphur addition, improving the hot and cold forming characteristics over those of 303 and providing a smoother machined surface finish. The machinability rate is also slightly reduced.

Alloy 303 is an austenitic stainless steel developed for applications requiring extensive machining operations. The alloy has a sulfur addition which assists in breaking up turnings while reducing drag on the cutting tool when compared to the machining characteristics of the conventional 18-8 stainless steel.

The alloy is nonmagnetic in the annealed condition , but may become slightly magnetic as a result of cold working. The addition of sulfur negatively impacts the corrosion resistance of 303 making it less resistant than 304 to mildly corrosive environments.

Specification
Alloy 303 (UNS S30300) | X8CrNiS18-9 | SUS 303 | 1.4305

Standards
ASTM A 895

Corrosion Resistance
Alloy 303 is resistant to mildly corrosive environments. However, the alloy’s corrosion resistance is inferior to 304 in most applications. Its corrosion resistance is superior to 416, another free-machining grade, but is somewhat inferior to other 400 series stainless steels which do not contain higher sulfur levels. In order to obtain optimal corrosion resistance, it is recommended that Alloy 303 be chemically treated to remove sulfides from the final surfaces

Heat Treatment

Annealing – Heat to a minimum temperature of 1900°F (1038°C) and water quench or rapid cool by other means.

Hardening – Alloy 303 cannot be hardened by thermal treatment, it can only be hardened by cold working.

Cold Forming
The cold formability of Alloy 303 is adversely impacted by the high sulfur content. The alloy may be bent with a generous bend radius, however, when cold forming is required, 304 should be utilized.

Hot Forming
The high sulfur content of Alloy 303 also has a detrimental impact on hot workability. If hot forming is required, once again, 304 should be considered as an alternate selection.

Machining
Alloy 303 was developed specifically for ease of machining. The sulfur addition assists in breaking up turnings which reduces drag on the cutting tool. It produces small brittle chips and may be machined at high speeds with deep cuts and heavy feeds.

Applications
Nuts and Bolts, Bushings, Shafts, Aircraft Fittings, Electrical Switchgear,Components, Gears

Stainless Steel 303 Stockist
Stainless Steel 303 Exporter
Stainless Steel 303 Dealer
Stainless Steel 303 Trader
Stainless Steel 303 Manufacturer
Stainless Steel 303 Supplier

LDX 2101 (UNS S32101) is a 21.5% chromium, 5% manganese, 1.5% nickel, 0.45% molybdenum lean duplex stainless steel with corrosion resistance superior to 304L and comparable to 316L. LDX 2101 possesses both superior strength and greater chloride stress-corrosion cracking resistance than conventional 300 series stainless steels. The enhanced mechanical strength of LDX 2101 enables it to be used in thinner cross-sections which can provide significant cost savings to the end user. LDX 2101 was designed to be a low nickel general purpose substitute for 304 and 304L. LDX 2101 is a low-nickel; nitrogen enhanced lean duplex stainless steel developed for general-purpose use. The austenitic-ferritic (duplex) structure of the alloy is balanced to approximately equal amounts of ferrite and austenite in the solution-annealed condition. The high chromium and nitrogen content of LDX 2101, combined with an addition of molybdenum, provide very good resistance to localized and uniform corrosion. The duplex microstructure contributes to the alloys high strength and resistance to chloride stress-corrosion cracking. LDX 2101 possesses both superior strength and greater chloride stress-corrosion cracking resistance than conventional 300 series stainless steels. The corrosion resistance of LDX 2101 is generally good making it suitable for use in a wide variety of applications. In most environments, it is superior to 304L stainless steel and comparable to the molybdenum containing 316L stainless steel.

The enhanced mechanical strength of LDX 2101 is far superior to conventional 300 series stainless steels enabling it to be used in thinner cross-sections which can provide significant cost savings to the end user. LDX 2101 exhibits good abrasion and erosion resistance and can be fabricated using standard shop practices developed for duplex stainless steels.

Specification
Alloy LDX 2101® (UNS S32101)
EN 1.4162

Corrosion Properties
The 300 series stainless steels are used extensively in numerous process industries due to their overall general corrosion resistance. The corrosion resistance of LDX 2101 is generally better than 304L and comparable to 316L making it suitable for use in a wide variety of industries and applications.

Chloride Pitting Resistance
The pitting resistance of an austenitic stainless steel can be related directly to alloy composition, where chromium, molybdenum and nitrogen are a weight %. The Pitting Resistance Equivalent Number (PREN) uses the following formula to measure an alloy's relative pitting resistance - the higher the number, the better the pitting resistance.

Stress-Corrosion Cracking Resistance
Chloride stress-corrosion cracking (SCC) is one of the most serious forms of localized corrosion. Higher temperatures and reduced pH will increase the probability of SCC. The onset of SCC is one of the most common reasons for stainless equipment failure. Because of its duplex structure LDX 2101 offers excellent resistance to SCC.

Applications
Air Pollution Control - External absorber and outlet duct reinforcements
Biofuels - Biodiesel and Ethanol plants and tanks
Chemical Process Equipment - Pressure vessels, heat exchangers, tanks, piping systems and tankers
Food and Beverage Process Equipment - Palm oil and wine storage tanks
Infrastructure - Bridges, flood gates, sluice gates
Pulp and Paper - Hydrogen peroxide bleaching reactors, white liquor storage tanks, digesters, washers, paper machine parts
Seawater Treatment - Desalination system chambers and evaporators
Water and Waste water Treatment.

A Corrosion Resistant Austenitic Stainless Steel with a High Molybdenum and Nitrogen Content Developed for Use in Chloride Containing Environments. Alloy 317LMN (UNS S31726) is an austenitic chromium-nickel-molybdenum stainless steel with corrosion resistance superior to 316L and 317L. The higher molybdenum content, combined with an addition of nitrogen, provides the alloy with its enhanced corrosion resistance, especially in acidic chloride containing service. The combination of molybdenum and nitrogen also improves the alloys resistance to pitting and crevice corrosion.

The nitrogen content of Alloy 317LMN acts as a strengthening agent giving it a higher yield strength than 317L .Alloy 317LMN is also a low carbon grade which enables it to be used in the as-welded condition free from chromium carbide precipitation on the grain boundaries.

Alloy 317LMN is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, only by cold working. The alloy can be easily welded and processed by standard shop fabrication practices.

Specification
Alloy 317LMN (UNS S31726)
W. Nr. 1.4439

Corrosion Resistance

The higher molybdenum and nitrogen content of Alloy 317LMN assures superior general and localized corrosion resistance in most media when compared with 304/304L, 316/316L and even 317L stainless steels. Environments that don’t attack 304/304L stainless steel will normally not corrode 317LMN. One exception, however, are strongly oxidizing acids such as nitric acid. Alloys that contain molybdenum generally do not perform as well in these environments.

Alloy 317LMN has excellent corrosion resistance in a wide range of chemicals. It resists attack in sulfuric acid, hydrochloric acid, acidic chlorine and phosphoric acid. It is used in handling hot organic and fatty acids often present in food and pharmaceutical processing applications.

Because of its low carbon content, Alloy 317LMN should be utilized when it will be exposed to temperatures in the chromium carbide precipitation range of 800-1500°F (427-816°C). The higher nitrogen content of 317LMN further retards the precipitation of sigma phase as well as carbides.

In general, austenitic stainless steels are subject to chloride stress corrosion cracking in halide service. Although 317LMN is somewhat more resistant to stress corrosion cracking than 304/304L stainless steels, because of its higher molybdenum content, it is still susceptible.

The higher chromium, molybdenum and nitrogen content of 317LMN enhance its ability to resist pitting and crevice corrosion in the presence of chlorides and other halides. The Pitting Resistance Equivalent including Nitrogen number (PREN) is a relative measure of pitting resistance. The following chart offers a comparison Alloy 317LMN and other austenitic stainless steels.

Alloy 317LMN can be easily welded and processed by standard shop fabrication practices.

Applications
Aerospace – piston engine manifolds
Chemical Processing
Expansion Joints
Food Processing – equipment and storage
Petroleum Refining – polythionic acid service
Waste Treatment – thermal oxidizers
Pharmaceutical Production

SS 317LMN Sheets Stockist
1.4439 Sheets Stockist
S32726 Sheets Stockist
ASTM A240 Gr 317LMN Sheets Stockist
SS 317LMN Sheets Suppliers
1.4439 Sheets Suppliers
S32726 Sheets Suppliers
ASTM A240 Gr 317LMN Sheets Suppliers
SS 317LMN Sheets Traders
1.4439 Sheets Traders
S32726 Sheets Traders
ASTM A240 Gr 317LMN Sheets Traders
SS 317LMN Sheets Dealers

Alloy 347 (S34700) is stabilized stainless steel plate which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). Alloy 347 stainless steel plate is stabilized by the addition of columbium and tantalum.

Alloy 347 stainless steel plate is also advantageous for high temperature service because of its good mechanical properties. Alloy 347 stainless steel plate offers higher creep and stress rupture properties than Alloy 304 and, particularly, Alloy 304L, which might also be considered for exposures where sensitization and intergranular corrosion are concerns.

Alloy 347 (UNS S34700) is columbium stabilized austenitic stainless steel plate with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321 (UNS S32100). It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy has good oxidation resistance and creep strength to 1500°F (816°C). It also possesses good low temperature toughness.

Alloy 347H (UNS S3409) stainless steel plate is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C). In most instances, the carbon content of the plate enables dual certification.

Alloy 347 stainless steel plate cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.

Standards

ASTM A 240
ASME SA 240
AMS 5512

Corrosion Resistance

Alloy 347 stainless steel plate exhibits good general corrosion resistance that is comparable to 304. It was developed for use in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C) where un-stabilized alloys such as 304 are subject to intergranular attack. In this temperature range, the overall corrosion resistance of Alloy 347 stainless steel plate is superior to Alloy 321 stainless steel plate. Alloy 347 also performs somewhat better than Alloy 321 in strongly oxidizing environments up to 1500°F (816°C). The alloy can be used in nitric solutions, most diluted organic acids at moderate temperatures and in pure phosphoric acid at lower temperatures and up to 10% diluted solutions at elevated temperatures. Alloy 347 stainless steel plate resists polythionic acid stress corrosion cracking in hydrocarbon service. It can also be utilized in chloride or luoride free caustic solutions at moderate temperatures. Alloy 347 stainless steel plate does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid. Alloy 347 stainless steel plate can be easily welded and processed by standard shop fabrication practices.

SS 347 Polished Plates
347 SS Polished Plates
347 Stainless Steel Polished Plates
SS UNS S34700 Polished Plates
SS WERKSTOFF NR. 1.4550 Polished Plates
ASME SA240 347 Polished Plates
SS 347 Hot Rolled Plates
347 SS Hot Rolled Plates
347 Stainless Steel Hot Rolled Plates
SS UNS S34700 Hot Rolled Plates
SS WERKSTOFF NR. 1.4550 Hot Rolled Plates
ASTM A240 347 Stainless Steel Hot Rolled Plates
SS 347 Cold Rolled Plates
347 SS Cold Rolled Plates
347 Stainless Steel Cold Rolled Plates
SS UNS S34700 Cold Rolled Plates
SS WERKSTOFF NR. 1.4550 Cold Rolled Plates
ASTM A240 347 Stainless Steel Cold Rolled Plates

Alloy 309/309S (UNS S30900/S30908) austenitic stainless steel is typically used for elevated temperature applications. Its high chromium and nickel content provides comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than the common austenitic Alloy 304. Alloy 309 (UNS S30900) is an austenitic stainless steel developed for use in high temperature corrosion resistance applications. The alloy resists oxidation up to 1900°F (1038°C) under non-cyclic conditions. Frequent thermal cycling reduces oxidation resistance to approximately 1850°F (1010°C). Because of its high chromium and low nickel content, Alloy 309 can be utilized in sulfur containing atmospheres up to 1832°F (1000°C). The alloy is not recommended for use in highly carburizing atmospheres since it exhibits only moderate resistance to carbon absorption. Alloy 309 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced.When heated between 1202 – 1742°F (650 – 950°C) the alloy is subject to sigma phase precipitation. A solution annealing treatment at 2012 – 2102°F (1100 – 1150°C) will restore a degree of toughness.309S (UNS S30908) is the low carbon version of the alloy. It is utilized for ease of fabrication. 309H (UNS S30909) is a high carbon modification developed for enhanced creep resistance. It most instances the grain size and carbon content of the plate can meet both the 309S and 309H requirements. Alloy 309 can be easily welded and processed by standard shop fabrication practices.

Standard
ASTM A 240
ASME SA 240
AMS 5523

Features
Alloy 309 is not designed for service in wet corrosive environments. The high carbon content, which is present to enhance creep properties, has a detrimental effect on aqueous corrosion resistance. The alloy is prone to intergranular corrosion after long term exposure at high temperatures. 

Specification
Alloy 309/309S/309H (UNS S30900, S30908, S30909)
W. Nr. 1.4833

Applications:
Furnaces — burners, doors, fans, piping and recuperates 
Fluidized Bed Furnaces — grids, piping, wind boxes
Paper Mill Equipment
Petroleum Refining — catalytic recovery systems, recuperates
Power Generation — pulverized coal burners, tube hangers
Thermal Processing — annealing covers and boxes, burners grids, doors, fans, lead pans and neutral salt pots, muffles and retorts, recuperates, walking beams
Waste Treatment — incinerators, rotary kilns and calciners

SS 309 Plate Exporters, SS 309 Plate Suppliers, SS 309 Plate Stockiest, SS 309 Plate Mumbai, SS 309 Plate India 
SS 309 Coil Exporters
SS 309 Coil Suppliers
SS 309 Coil Stockiest
SS 309 Coil Mumbai
SS 309 Coil India 

Stainless Steel 309 Cut Plates, Stainless Steel 309 Strips
SS 309 Strips

Alloy 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion. Alloy 2507 is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion. The impact strength is also high. Alloy 2507 is not recommended for applications which require long exposures to temperatures above 570°F because of the risk of a reduction in toughness. 

Standards
ASTM/ASME A240 - UNS S32750
EURONORM 1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR Z3 CN 25.06 Az

Corrosion Resistance
General Corrosion
The high chromium and molybdenum content of 2507 makes it extremely resistant to uniform corrosion by organic acids like formic and acetic acid. 2507 also provides excellent resistance to inorganic acids, especially those containing chlorides. In dilute sulfuric acid contaminated with chloride ions, 2507 has better corrosion resistance than 904L, which is a highly alloyed austenitic steel grade specially designed to resist pure sulfuric acid. Stainless steel of type 316L (2.5%Mo) cannot be used in hydrochloric acid due to the risk of localized and uniform corrosion. However, 2507 can be used in dilute hydrochloric acid. Pitting need not be a risk in the zone below the borderline in this figure, but crevices must be avoided.

Stress Corrosion Cracking
The duplex structure of 2507 provides excellent resistance to chloride stress corrosion cracking (SCC). Because of its higher alloy content, 2507 is superior to 2205 in corrosion resistance and strength. 2507 is especially useful in offshore oil and gas applications and in wells with either naturally high brine levels or where brine has been injected to enhance recovery.

Pitting Corrosion
Different testing methods can be used to establish the pitting resistance of steels in chloride-containing solutions. The data above were measured by an electrochemical technique based on ASTM G 61. The critical pitting temperatures (CPT) of several high-performance steels in a 1M sodium chloride solution were determined. The results illustrate the excellent resistance of 2507 to pitting corrosion. The normal data spread for each grade is indicated by the dark gray portion of the bar.

Applications

Oil and gas industry equipment
Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems
Chemical process industries, heat exchangers, vessels, and piping
Desalination plants, high pressure RO-plant and seawater piping
Mechanical and structural components, high strength, corrosion-resistant parts
Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping

Alloy 825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. It was developed to provide exceptional corrosion resistance in both oxidizing and reducing environments. The alloy is resistant to chloride stress-corrosion cracking and pitting. The addition of titanium stabilizes Alloy 825 against sensitization in the as-welded condition making the alloy resistant to intergranular attack after exposure to temperatures in a range that would sensitize un-stabilized stainless steels. The fabrication of Alloy 825 is typical of nickel-base alloys, with material being readily formable and weld-able by a variety of techniques. An Austenitic Nickel-Iron-Chromium Alloy Developed for Exceptional Corrosion Resistance In Both Oxidizing and Reducing Environments

Alloy 825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. It was developed to provide exceptional resistance to numerous corrosive environments, both oxidizing and reducing.

The nickel content of Alloy 825 makes it resistant to chloride stress-corrosion cracking, and combined with molybdenum and copper, provides substantially improved corrosion resistance in reducing environments when compared to conventional austenitic stainless steels. The chromium and molybdenum content of Alloy 825 provides resistance to chloride pitting, as well as resistance to a variety of oxidizing atmospheres. The addition of titanium stabilizes the alloy against sensitization in the as-welded condition. This stabilization makes Alloy 825 resistant to intergranular attack after exposure in the temperature range which would typically sensitize un-stabilized stainless steels.

Alloy 825 is resistant to corrosion in a wide variety of process environments including sulfuric, sulfurous, phosphoric, nitric, hydrofluoric and organic acids and alkalis such as sodium or potassium hydroxide, and acidic chloride solutions.

The fabrication of Alloy 825 is typical of nickel-base alloys, with material readily formable and weld-able by a variety of techniques

Specifications
Alloy 825 (UNS N08825)
W.Nr. 2.4858:

Standards
ASTM B 424
ASME SB 424

Corrosion Resistance
The most outstanding attribute of Alloy 825 is its excellent corrosion resistance. In both oxidizing and reducing environments, the alloy resists general corrosion, pitting, crevice corrosion, intergranular corrosion and chloride stress-corrosion cracking. 

Stress-Corrosion Cracking Resistance
The high nickel content of Alloy 825 provides superb resistance to chloride stress-corrosion cracking. However, in the extremely severe boiling magnesium chloride test, the alloy will crack after long exposure in a percentage of samples. Alloy 825 performs much better in less severe laboratory tests.

Applications

Air Pollution Control
Scrubbers
Chemical Processing Equipment
Acids
Alkalis
Food Process Equipment
Nuclear
Fuel Reprocessing
Fuel Element Dissolvers
Waste Handling
Offshore Oil and Gas Production
Seawater Heat Exchangers
Piping Systems
Sour Gas Components
Ore Processing
Copper Refining Equipment
Petroleum Refining
Air-cooled Heat Exchangers
Steel Pickling Equipment
Heating Coils
Tanks
Crates
Baskets
Waste Disposal
Injection Well Piping Systems

Nickel 201 plate offer outstanding corrosion resistance to caustic soda and other alkalis. Ni 201 perform best in reducing environments but can also be used under oxidizing conditions when a passive oxide film is formed. It is used in aerospace, chemical and petrochemical processing, food processing and marine and water treatment applications. Nickel 201 is highly ductile across a wide temperature range and can be easily welded and processed by standard shop fabrication practices. 201 (UNS N02201) is dual-certifiable wrought nickel materials. It differ only in the maximum carbon levels present—0.02% for Nickel 201.

Higher temperatures Nickel 201 plate should be utilized. Both grades are approved under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 201 plate is approved up to 1250ºF (677ºC).

Ni 201 grade offer outstanding corrosion resistance to caustic soda and other alkalis. The alloys perform best in reducing environments but can also be used under oxidizing conditions that produce a passive oxide film. They both resist corrosion by distilled, natural water and flowing seawater but are attacked by stagnant seawater.

201 is ferromagnetic and exhibit highly ductile mechanical properties across a wide temperature range. Ni 201 grades is easily welded and processed by standard shop fabrication practices.

Specification
Nickel 201 N02201
W. Nr. 2.4068

Standards
ASTM B 162
ASME SB 162

Corrosion Resistance
Nickel 201 plate possess excellent resistance in many corrosive environments including hydrofluoric acid and alkalis. These alloy perform extremely well under reducing conditions but can also be used in oxidizing conditions due to the formation of a passive oxide film. The outstanding resistance of Nickel 201 plates in caustics is based on this type of protection. In conditions where temperatures exceed 600ºF (315ºC), Nickel 201 plate is the preferred material, due to its lower carbon content. The resistance of Nickel 201 plate in mineral acid applications varies depending on the concentration and temperature, as well as if the solution is aerated. The alloys perform better in non-aerated acid solutions. Nickel 201 plate perform well in acids, alkalis, and neutral salt solutions. However, in oxidizing salt solutions, strong corrosion can take place. Both alloys resist dry gases at room temperatures. Nickel 201 plate can be used in hydrogen chloride and dry chlorine gas up to 1022ºF (550ºC).
Applications

Aerospace and Missile Components

Chemical and Petrochemical Processing - chlor-alkali production, caustic soda and other alkalis; sulfuric, hydrochloric, hydrofluoric, phosphoric, and organic acids; neutral and reducing salt solutions; reactive chlorides including phosphorus oxychloride, phosphorus trichloride, nitrosyl chloride, benzyl chloride, and benzoyl chloride; fluorine and chlorine; bromine and phenol

Food Processing Equipment - cooling brine, fatty acids, fruit juices

Marine and Water Treatment - distilled, natural water and flowing seawater

Stainless steel grade 304LN  is a nitrogen-strengthened version of stainless steel grade 304. Stainless steel grade 304 is the most commonly used stainless steel.

Stainless steel is a family of iron-based alloys that contain a minimum of approximately 11chromium, a composition that prevents the iron from rusting as well as providing heat resistant properties. Different types of stainless steel include the elements C from 0.03 to greater than 1.00, N, Al, Si, S, Ti, Ni, Cu, Se, Nb, and Mo). Specific types of stainless steel are often designated by a three digit number. Resistance to corrosion and staining, low maintenance, and familiar luster make stainless steel an ideal material for many applications where both the strength of steel and corrosion resistance is required. Moreover, stainless steel can be rolled into sheets, plates, bars, wire and tubing. These can be used in cookware, cutlery, surgical instruments, major appliances, construction material in large buildings, industrial equipment e.g., in paper mills, chemical plants, water treatment, and storage tanks and tankers for chemicals and food products. The corrosion resistance, the ease with which the material can be steam-cleaned and sterilized, and absence of the need for surface coatings have prompted the use of stainless steel in kitchens and food processing plants.

Standards:
SS 304LN
JIS SUS 304LN
UNS 30453
WNR 1.4311
DIN X2CrN-iN18-10

Features
Very good corrosion resistance,
weld ability and cold deformability.
Good deep drawing properties and very good high gloss polish ability.

Applications
Heat exchangers
Chemical industry
Food industry
Petroleum industry
Fabrication industry
 Nuclear industry

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