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

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

Stainless steel 316 matte finish sheet, also known as No. 4 finish or hairline finish, is a type of stainless steel sheet with a dull, brushed appearance. This finish is achieved by applying a series of abrasive belts to the surface of the stainless steel sheet, creating a uniform, non-reflective finish. This type of finish is popular for its decorative appeal and is often used in architectural and interior design applications.

Features:

Aesthetic appeal: Stainless steel matte finish sheet has a decorative appeal and is often used in interior design and architectural applications.

Non-reflective surface: The matte finish provides a non-reflective surface, which can help reduce glare in bright environments.

Scratch resistance: The matte finish is more resistant to scratches and abrasions than a polished finish.

Easy to clean: The non-reflective surface of the matte finish is easy to clean and maintain.

Usage and Application:

Stainless steel matte finish sheet is widely used in various industries, including:

Architectural applications: It is used for decorative purposes in building facades, elevators, and interior design applications.

Kitchen equipment: It is used for the manufacture of kitchen equipment, including countertops, sinks, and cabinets.

Medical equipment: It is used in the manufacture of medical equipment due to its corrosion resistance and hygienic properties.

Automotive industry: It is used in the automotive industry for decorative trim and interior components.

Handling:
When handling stainless steel matte finish sheet, it's important to wear gloves and protective clothing to prevent injury. The sheet should be handled with care to avoid scratching or damaging the surface.

Different Names:
Stainless steel matte finish sheet is also known by other names, including:

No. 4 finish stainless steel sheet
Hairline finish stainless steel sheet
Satin finish stainless steel sheet

Size Range for Sheet:
Stainless steel matte finish sheet is available in a variety of sizes and thicknesses, ranging from 0.5mm to 3mm in thickness and from 4 feet by 8 feet to 5 feet by 10 feet in sheet size. The specific size range may vary depending on the supplier or manufacturer. Some suppliers may also be able to provide custom sizes or cut-to-length services to meet specific project requirements.

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

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

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

Alloy 600 (UNS N06600) is a nickel-chromium alloy designed for use from cryogenic to elevated temperatures in the range of 2000°F (1093°C). Alloy 600 is non-magnetic and readily weldable. The alloy is used in a variety of corrosion resisting applications. The high nickel content of Alloy 600 provides a level of resistance to reducing environments, while the chromium content of the material provides resistance to weaker oxidizing environments. The high nickel content of the material provides exceptional resistance to chloride stress corrosion cracking. A Versatile Nickel-Chromium-Iron Alloy Possessing a Unique Combination of High Temperature Resistance up to 2000°F (1093°C) and Excellent Corrosion Resistance. Alloy 600 (UNS N06600) is a versatile nickel-chromium-iron alloy that be utilized in temperatures ranging from cryogenic up to 2000°F (1093°C) and for corrosion resistant service. The high nickel content assures the alloy will be virtually immune to chloride-ion stress corrosion cracking while also providing corrosion resistance to many organic and inorganic compounds. The chromium content provides resistance to oxidizing environments at high temperatures or in corrosive media, it also resists sulfur compounds. In high temperature service, Alloy 600 resists oxidation and scaling up to 2000°F (1093°C). It is well suited for applications requiring carburization resistance or in sulfur containing environments at moderate temperatures. However, it is subject to sulfidation at high temperatures.

Alloy 600 is non-magnetic and cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.

Specification
Alloy 600 (UNS N06600)
W. Nr. 2.48161

Standards
ASTM B 168
ASME SB 168
AMS 5540 

Corrosion Resistance
Alloy 600 resists corrosion in a variety of environments. Because of the high chromium content of the alloy, it is superior to Nickel 200/201 under oxidizing conditions and its high nickel content enables it to perform well in reducing environments. The presence of nickel also provides excellent resistance to alkaline solutions Alloy 600 has moderate resistance to strongly oxidizing acids. However, oxidation occurring in dissolved air alone is not sufficient to insure complete passivity and freedom from attack by air-saturated mineral acids and certain concentrated organic acids.

Heat Resistance
Alloy 600 is used extensively in the thermal processing industry where resistance to oxidation and furnace atmospheres is required. The alloy is also utilized in nitriding applications because of its resistance to nitrogen at high temperatures.

Alloy 600 can be easily welded and processed by standard shop fabrication practices. The alloy cannot be hardened by heat treatment, only by cold working. 

Applications
Aerospace Components

Chemical Processing – chlorination equipment, fatty acids, hydrogen fluoride, magnesium chloride, vinyl chloride monomer, sodium sulfide, titanium dioxide

Food Processing

Petrochemical Processing – catalyst regenerators

Power Generation – nuclear components

Pulp and Paper – abiotic acid equipment

Thermal Processing – baskets and trays, boxes, muffles and retorts, nitriding containers, roller hearths, vacuum furnace components.

Standard
ASTM A 240
ASME SA 240
AMS 5524/5507
QQ-S 766

Corrosion Resistance
In most applications Alloy 316/316L has superior corrosion resistance to Alloy 304/304L. Process environments that do not corrode Alloy 304/304L will not attack this grade. One exception, however, is in highly oxidizing acids such as nitric acid where stainless steels containing molybdenum are less resistant. Alloy 316/316L performs well in sulfur containing service such as that encountered in the pulp and paper industry. The alloy can be used in high concentrations at temperatures up to 120°F (38°C). Alloy 316/316L also has good resistance to pitting in phosphoric and acetic acid. It performs well in boiling 20% phosphoric acid. The alloy can also be used in the food and pharmaceutical process industries where it is utilized to handle hot organic and fatty acids in an effort to minimize product contamination. Alloy 316/316L performs well in fresh water service even with high levels of chlorides. The alloy has excellent resistance to corrosion in marine environments under atmospheric conditions.

The higher molybdenum content of Alloy 316/316L assures it will have superior pitting resistance to Alloy 304/304L in applications involving chloride solutions, particularly in an oxidizing environment.

In most instances, the corrosion resistance of Alloys 316 and 316L will be roughly equal in most corrosive environments. However, in environments that are sufficiently corrosive to cause intergranular corrosion of welds and heat-affected zones Alloy 316L should be used because of its low carbon content.

Applications
Chemical and Petrochemical Processing — pressure vessels, tanks, heat exchangers, piping systems, flanges, fittings, valves and pumps
Food and Beverage Processing
Marine
Medical
Petroleum Refining
Pharmaceutical Processing
Power Generation — nuclear
Pulp and Paper
Textiles
Water Treatment

Doshi Impex India - 304 Sheet - Stainless Steel 304 - SS 304 sheet - Stainless steel 304 sheet  - Doshi Impex Stainless Steel sheet 304 - AISI 304 - 1.4301 Sheet - UNS S30400 - 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. 304 stainless steel has excellent resistance to a wide range of atmospheric environments and many corrosive media. It is subject to pitting and crevice corrosion in warm chloride environments and to stress corrosion cracking above about 60 °C. It is considered resistant to pitting corrosion in water with up to about 400 mg/L chlorides at ambient temperatures, reducing to about 150 mg/L at 60 °C.

304 stainless steel is also very sensitive at room temperature to the thiosulfate anions released by the oxidation of pyrite (as encountered in acid mine drainage) and can undergo severe pitting corrosion problems when in close contact with pyrite- or sulfide-rich clay materials exposed to oxidation.
304 stainless steel is used for a variety of household and industrial applications such as food handling and processing equipment, screws, machinery parts, and car headers. 304 stainless steel is also used in the architectural field for exterior accents such as water and fire features. It is also a common coil material for vaporizers.
 
The Japanese equivalent grade of this material is SUS304. It is also specified in European norm 1.4301.
Features
Very good corrosion resistance,
weld ability and cold deformability.
Good deep drawing properties and very good high gloss polish ability.
Specifications: 304
UNS: S30400 | X5CrNi18-10 | 1.4301| SUS 304
 
Specifications: 304L
UNS: S30403 | X2CrNi19-11 | 1.4306 | SUS 304L

Typical Applications

Chemical plants

Air conditioning industry

Petroleum refineries

Space heating industry

Refrigeration industry

Power plants industry

Petrochemical plants industry

Natural gas processing industry

Other Usage:
Food processing equipment, particularly in beer brewing, milk processing & winemaking
Kitchen benches, sinks, troughs, equipment and appliances
Architectural paneling, railings & trim
Chemical containers, including for transport
Heat Exchangers
Woven or welded screens for mining, quarrying & water filtration
Threaded fasteners
Springs.

Stainless Steel 304 Sheets Plates For Chemical Water & Oil Storage 
Stainless Steel 304L Sheets Plates
SS 304 Sheets Plates
SS 304L Sheets
Stainless Steel UNS S30400 Plates
SS UNS S30403 Sheets Plates
Stainless Steel Din 1.4306 Plates
SS Din 1.4307 Sheets
 
 

Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel plate with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness. Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic. Alloy 2205 duplex stainless steel plate is a 22% Chromium, 3% Molybdenum, 5-6% Nickel nitrogen alloyed duplex stainless steel plate with high general, localized and stress corrosion resistance properties in addition to high strength and excellent impact toughness. Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic. The yield strength is about twice that of austenitic stainless steels. This allows a designer to save weight and makes the alloy more cost competitive when compared to 316L or 317L. Alloy 2205 duplex stainless steel plate is particularly suitable for applications covering the -50F/+600F temperature range. Temperatures outside this range may be considered but need some restrictions, particularly for welded structures.

Specification
Alloy 2205 (UNS S32205/S31803)
A 22Cr-3Mo Stainless Steel

Standards
ASTM/ASME A240 UNS S32205/S31803
EURONORM 1.4462 X2CrNiMoN 22.5.3
AFNOR Z3 Cr Ni 22.05 AZ
DIN W. Nr 1.4462 

Corrosion Resistance
Because of its high chromium (22), molybdenum (3), and nitrogen (0.18) contents, the corrosion resistance properties of 2205 duplex stainless steel plate are superior to that of 316L or 317L in most environments. The chromium, molybdenum, and nitrogen in 2205 duplex stainless steel plate also provide excellent resistance to pitting and crevice corrosion even in very oxidizing and acidic solutions.

Stress Corrosion Resistance
The duplex microstructure is known to improve the stress corrosion cracking resistance of stainless steels. Chloride stress corrosion cracking of austenitic stainless steels can occur when the necessary conditions of temperature, tensile stress, oxygen, and chlorides are present. Since these conditions are not easily controlled, stress corrosion cracking has often been a barrier to utilizing 304L, 316L, or 317L.

Corrosion Fatigue Resistance
Alloy 2205 duplex stainless steel plate combines high strength and high corrosion resistance to produce high corrosion fatigue strength. Applications in which processing equipment is subject to both an aggressively corrosive environment and to cycle loading can benefit from the properties of 2205 duplex stainless steel plate.

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 

Applications
Pressure vessels, tanks, piping, and heat exchangers in the chemical processing industry
Piping, tubing, and heat exchangers for the handling of gas and oil
Effluent scrubbing systems
Pulp and paper industry digesters, bleaching equipment, and stock-handling systems
Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
Cargo tanks for ships and trucks
Food processing equipment

Alloy 317L (UNS S31703) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, Alloy 317L offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steels. It is a low carbon or "L" grade which provides resistance to sensitization during welding and other thermal processes. Alloy 317L (UNS S31703) is a lowcarbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades. The alloy provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.
The low carbon content of Alloy 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317 (UNS S31700). Alloy 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, however the material will harden due to cold working. Alloy 317L can be easily welded and processed by standard shop fabrication practices.
 
 
Specification
Alloy 317L (UNS S31703)
W. Nr. 1.4438
Standards
ASTM A 240
ASME SA 240

Corrosion Resistance
The higher molybdenum content of Alloy 317L assures superior general and localized corrosion resistance in most media when compared with 304/304L and 316/316L stainless steels. Environments that don''t attack 304/304L stainless steel will normally not corrode 317L. 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 317L has excellent corrosion resistance to a wide range of chemicals. It resists attack in sulfuric acid, acidic chlorine and phosphoric acid. It is used in handling hot organic and fatty acids often present in food and pharmaceutical processing applications.
 
The corrosion resistance of 317 and 317L should be the same in any given environment. The one exception is where the alloy will be exposed to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). Because of its low carbon content, 317L is the preferred material in this service to guard against intergranular corrosion.
 
 
Applications
Air Pollution Control — flue gas desulfurization systems (FGD)
Chemical and Petrochemical Processing
Explosives
Food and Beverage Processing
Petroleum Refining
Power Generation — condensers
Pulp and Paper

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

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 200 plate offer outstanding corrosion resistance to caustic soda and other alkalis. It performs best in reducing environments but can also be used under oxidizing conditions when a passive oxide film is formed. Ni 200 is used in aerospace, chemical and petrochemical processing, food processing and marine and water treatment applications. Nickel 200 is highly ductile across a wide temperature range and can be easily welded and processed by standard shop fabrication practices. Nickel 200 (UNS N02200) is dual-certifiable wrought nickel materials. It differ only in the maximum carbon levels present—0.15% for Nickel 200 

Nickel 200 plate is normally limited to service at temperatures below 600ºF (315ºC), since at higher temperatures it can suffer from graphitization which can severely compromise properties.Nickel 200 grades is approved under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 200 plate is approved for service up to 600ºF (315ºC)
Nickel 200 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.It resist corrosion by distilled, natural water and flowing seawater but are attacked by stagnant seawater.

Nickel 200 is ferromagnetic and exhibit highly ductile mechanical properties across a wide temperature range. Both grades are easily welded and processed by standard shop fabrication practices.

Specification
Nickel 200 (UNS N02200)
W. Nr. 2.4066

Standards
ASTM B 162
ASME SB 162

Corrosion Resistance
Nickel 200 plate possess excellent resistance in many corrosive environments including hydrofluoric acid and alkalis. These alloys 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 200 plates is caustics is based on this type of protection. In conditions where temperatures exceed 600ºF (315ºC), The resistance of Nickel 200 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 200 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. 
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

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