Sheet and Plate

601 plates Inconel 601 is a nickel-chromium alloy that is highly resistant to oxidation through 2200°F. 601 alloy develops a tightly adherent oxide scale which resists spalling even under severe thermal cycling. The alloy has good high temperature strength, and retains its ductility after long service exposure. 601 alloy has good hot corrosion resistance under oxidizing conditions. 601 alloy is not suggested for use in strongly reducing, sulfur bearing environments.

For maximum oxidation resistance, 601 alloy should be welded with matching composition 601 alloy GTAW wire. 601 alloy is more difficult to machine than 304 stainless steel. Its machinability rating is 15-21% relative to AISI B1112 steel.

Common Trade Names
Alloy 601, Inconel 601, Nickel 601

Specifications
AMS 5715, AMS 5870, ASME SB 167, ASME SB 168, ASTM B 167, ASTM B 168, EN 2.4851, UNS N06601, Werkstoff 2.4851

Features
Outstanding oxidation resistance to 2200°F
Highly resistant to carburization
Good creep and rupture strength
Metallurgical stability

Applications
Copper brazing, annealing and sintering muffles and retorts
Radiant tubes
Strand annealing tubes
Steam super heater tube supports
Thermocouple protection tubes

ZERON 100 (F55 Duplex / 25Cr Duplex) is a super duplex stainless steel for use in aggressive environments. ZERON 100 complies with UNS S32760, however, Rolled Alloys tightly controls the chemistry and production of ZERON 100 in strict accordance with the requirements of our in-house 'MDS' specifications which are tighter than standard ASTM specifications. This ensures a consistent quality product is produced with optimal corrosion resistance and charpy impact toughness

Common Trade Names

Super Duplex Stainless, UNS S32760, F55 Duplex, EN 1.4501, 25Cr Duplex, Super Duplex

Specifications

ASTM A 182, ASTM A 182 (Grade F55), ASTM A 240, ASTM A 276, ASTM A 314, ASTM A 473, ASTM A 479, ASTM A 790, ASTM A 815, NORSOK MDS 055, UNS S32760, W. Nr./EN 1.4501, Werkstoff 1.4501

Its properties include:

Resistant to pitting and crevice corrosion in warm seawater with a guaranteed corrosion performance (PREN > 40)

Lower more stable price compared to nickel based alloys

Excellent resistance to stress corrosion cracking in both chloride and sour environments

Superior resistance to sulfuric acid at most concentrations

Improved resistance over austenitic stainless to erosion corrosion and corrosion fatigue

High Strength (80,000 psi minimum Yield Strength) permitting designs to reduce weight versus other corrosion resistant alloys

ZERON 100 was developed as a seawater resistant material for pump applications in the North Sea as a cast material. Its excellent performance, led to demand for the alloy in a wider range of product forms and the development of wrought product forms. The corrosion resistance and strength properties of ZERON 100 have led to its widespread adoption in a range of industries. Oil and gas applications include process, seawater, firewater and subsea pipework systems, with associated risers, manifolds, pressure vessels, valves and heat exchangers.

Applications

Pollution control equipment such as flue gas desulfurization equipment (FGD), pulp and paper, power generation, chemical, pharmaceutical, desalination, mining, metallurgical and marine industries.

Alloy 20 was designed specifically to withstand sulfuric acid. Its nickel, chromium, molybdenum and copper levels all provide excellent general corrosion resistance. Restricted carbon plus columbium stabilization permits welded fabrications to be used in corrosive environments, normally without post-weld heat treatment. At 33% nickel, Alloy 20 has practical immunity to chloride stress corrosion cracking. This alloy is often chosen to solve SCC problems, which may occur with 316L stainless.

Common Trade Names
Carpenter 20, 20CB-3

Specifications
ASME SA 240, ASME SB 366, ASME SB 463, ASTM A 240, ASTM B 366, ASTM B 463, ASTM B 473, EN 2.4660, UNS N08020, Werkstoff 2.4660

Features
Excellent resistance to hot sulfuric acid
Resistant to inter-granular corrosion in the as-welded condition
Chloride stress corrosion cracking resistance

Applications
Sulfuric acid pickling tanks, racks and heating coils
Phosphate coating drums and racks
Heat exchangers
Bubble caps
Process piping
Mixing tanks
Chemical and petroleum process equipment