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Carbon		0.03 max
Chromium
Iron		Balance
Manganese		1.2 max
Molybdenum
Nickel
Nitrogen
Phosphorus		0.035 max
Silicon		0.8 max
Sulphur		0.02 max

Principal Design Features		This is a duplex alloy stainless steel designed to feature high strength, resistance to pitting, stress corrosion cracking, erosion corrosion and corrosion fatigue, crevice corrosion and strong weldability.

Applications		Applications include components exposed to strong chloride rich environments. Among them are a variety of components in desalination plants, heat exchanger tubes in sea water cooling plants, drive shafts for ocean going vessels, containers for the pulp and paper industry, tube and pipe systems at petrochemical refineries and human implant components.

Machinability		Low speeds and constant feeds will minimize this alloy's tendency to work harden. Tougher than 304 and 316 stainless with a long stringy chip, the use of chip breakers is recommended.

Forming		Due its inherently higher yield strength, initial forming pressures must be higher than those required for standard 300 series stainless steel. Low ductility will make forming operations difficult.

Welding		All common methods including GTAW, SAW and GMAW can be successfully employed. Preheating and post weld annealing is not required. Filler metal should be a balanced ferrite/ austenite type like 2205, 2507 or 2304.

Hot Working		This is the recommended method of forming. It may commence after heating to 1750-2000 F, followed by rapid cooling after working. For maximum properties material should be fully annealed after working.

Annealing		Heat to 1920-2060 F(1050-1125 C), rapid quench.

Hardening		This material is not hardenable by heat treatment.

Physical Data : [top]

Density (lb / cu. in.)	0.28
Specific Gravity	7.8
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.11
Modulus of Elasticity Tension	29

Form		Sheet
Condition		Test Specimen Annealed
Temper		70
Tensile Strength		125
Yield Strength		90
Form		Sheet
Condition		Test Specimen Annealed
Temper		200
Tensile Strength		105
Yield Strength		69
Form		Sheet
Condition		Test Specimen Annealed
Temper		400
Tensile Strength		95
Yield Strength		61
Form		Sheet
Condition		Test Specimen Annealed
Temper		600
Tensile Strength		93
Yield Strength		58
Form		Sheet
Condition		Test Specimen Annealed
Temper		800
Tensile Strength		92
Yield Strength		57