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Aluminum		0.5 max
Boron		0.008 max
Carbon		0.05 - 0.15
Chromium		20.5 - 23
Cobalt		0.5 - 2.5
Copper		0.5 max
Iron		17 - 20
Manganese		1 max
Molybdenum		8 - 10
Nickel		Balance
Phosphorus		0.04 max
Silicon		1 max
Sulphur		0.03 max
Titanium		0.15 max
Tungsten		0.2 - 1

Principal Design Features		A wrought nickel base alloy with excellent high temperature strength and oxidation resistance. It is very resistant to stress-corrosion cracking. All of the product forms are excellent in terms of forming and welding.

Applications		The alloy finds use in petrochemical process equipment and gas turbines in the hot combustor zone sections. Also used for structural components in industrial furnace applications because of the excellent oxidation resistance.

Machinability		The alloy is machinable by conventional methods and is similar to machining of the austenitic (300 series) stainless steels.

Forming		Cold working and forming of the various product forms can be done with standard tooling and processing.

Welding		Welding by conventional processes such as resistance welding, shielded metal arc, and MIG or TIG can readily be done with this alloy. Matching filler metal should be used. Preheating and/or post heating are not required.

Heat Treatment		The alloy usually is supplied in the solution annealed condition. This is accomplished at 2150 F followed by a rapid cooling.

Forging		Hot forging can be accomplished by conventional practice.

Hot Working		Same as forging.

Cold Working		Readily cold worked in a manner similar to that for austenitic (300 series) stainless steels except that this alloy is somewhat "stiffer" and may require more forming pressure. After severe cold working the product can be solution annealed as indicated in "Heat Treating".

Aging		The alloy can be aged, after solution heat treatment, at temperatures of 1200 to 1600 F. Aging will result in a slight increase in strength and hardness with the effect being related to hours of exposure at the aging temperature - the longer the time the greater the effect.

Hardening		Hardened by cold working and somewhat by aging. This alloy is not hardenable by conventional heating an quenching as with plain carbon steels.

Physical Data : [top]

Density (lb / cu. in.)	0.297
Specific Gravity	8.22
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.116
Electrical Resistivity (microhm-cm (at 68 Deg F))	712
Melting Point (Deg F)	2400
Poissons Ratio	0.328
Thermal Conductivity	63
Mean Coeff Thermal Expansion	7.7
Magnetic Permeability	1.002
Modulus of Elasticity Tension	29.8

Form		Sheet
Condition		Solution Annealed
Temper		70
Tensile Strength		114
Yield Strength		52
Elongation		43
Form		Sheet
Condition		Solution Annealed
Temper		1000
Tensile Strength		94
Yield Strength		42
Elongation		45
Form		Sheet
Condition		Solution Annealed
Temper		1200
Tensile Strength		83
Yield Strength		40
Elongation		37
Form		Sheet
Condition		Solution Annealed
Temper		1400
Tensile Strength		63
Yield Strength		38
Elongation		37
Form		Sheet
Condition		Solution Annealed
Temper		1600
Tensile Strength		37
Yield Strength		26
Elongation		50