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Carbon		0.05 - 0.1
Cerium		0.03 - 0.08
Chromium		20 - 22
Iron		Balance
Manganese		0.8 max
Nickel		10 - 12
Nitrogen		0.14 - 0.2
Phosphorus		0.04 max
Silicon		1.4 - 2
Sulphur		0.03 max

Principal Design Features		This alloy combines oxidation resistance up to 2100 F(1150 C) with high strength, good general corrosion resistance and ease of fabrication. It is austenitic in all conditions. Developed as an alternative for 310 and 446 stainless in heat resistant applications by replacing some of the chromium and silicon with domestically available rare earth metals. For improved creep strength at high temperature, consider Alloys 214, 556 and 230.

Applications		Applications include a wide variety of components requiring high strength at elevated temperatures. Among them are included radiant heating tubes, heat exchangers, heat treating oven components, kilns, expansion bellows and stack dampers.

Machinability		Similar in characteristics to other austenitic heat resisting alloys. Positive feeds and slow speeds combined with abundant cutting fluid can minimize this alloys' high tendency to work harden.

Forming		This alloy can be readily sheared, formed and punched. Due to its high strength, however, expect to use higher forces to counteract its tendency to spring-back. No forming should be performed in the range of 1200-1600 F(650-870 C) due to low ductility.

Welding		All commonly known welding methods apply here, including SMAW, GMAW and SAW .Preheating and post weld annealing are not required. Filler metal should be of similar composition for maximum weld integrity and properties.

Forging		Heat to 2000 F(1100 C) and finish at 1650 F(900 C). Do not hold or soak at temperature due to problems associated with excessive grain growth.

Annealing		Stress relieve at 1560-1740 F(850-950 C), held for 10-15 minutes followed by air cooling. Full annealing is obtained by heating to 1920-2100 F(1050-1150 C), holding for 10-15 minutes followed by air cooling.

Hardening		This alloy will not harden by thermal treatment.

Physical Data : [top]

Density (lb / cu. in.)	0.282
Specific Gravity	7.8
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.105
Electrical Resistivity (microhm-cm (at 68 Deg F))	505
Poissons Ratio	0.31
Magnetic Permeability	1.01
Modulus of Elasticity Tension	29

Form		Sheet
Condition		Annealed
Temper		70
Tensile Strength		104
Yield Strength		51
Elongation		51
Reduction of Area		70
Sharpy		110
Form		Sheet
Condition		Annealed
Temper		212
Tensile Strength		92
Yield Strength		38
Elongation		51
Reduction of Area		69
Form		Sheet
Condition		Annealed
Temper		572
Tensile Strength		83
Yield Strength		28
Elongation		50
Reduction of Area		68
Form		Sheet
Condition		Annealed
Temper		932
Tensile Strength		76
Yield Strength		25
Elongation		47
Reduction of Area		67
Form		Sheet
Condition		Annealed
Temper		1100
Form		Sheet
Condition		Annealed
Temper		1292
Tensile Strength		58
Yield Strength		23
Elongation		44
Reduction of Area		60
Form		Sheet
Condition		Annealed
Temper		1300
Form		Sheet
Condition		Annealed
Temper		1500
Form		Sheet
Condition		Annealed
Temper		1700
Form		Sheet
Condition		Annealed
Temper		1900