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Carbon		0.02 max
Chromium		14.5 - 16.5
Cobalt		2.5 max
Iron		4 - 7
Manganese		1 max
Molybdenum		15 - 17
Nickel		Balance
Phosphorus		0.03 max
Silicon		0.08 max
Sulphur		0.03 max
Tungsten		3 - 4.5
Vanadium		0.35 max

Principal Design Features		C-276 is a wrought corrosion-resistant alloy. A prime advantage of this alloy is that it generally does not require solution heat treatment after welding. It resists the formation of grain boundary precipitates that would degrade corrosion resistance.

Applications		Chemical process equipment and desulfurization of flue gas equipment.

Machinability		Good machinability, although the alloy work hardens as is true of the nickel base alloys in general.

Forming		Can be cold worked by all conventional methods.

Welding		Weldable by all common methods except that excessive heat input should be avoided. Can be used in the "as-welded" condition without further heat treatment for most corrosive applications.

Heat Treatment		Solution heat treatment is done at 2050 F followed by a rapid quench. The alloy is supplied in this condition. If hot forming or forging is done then the parts should be solution heat treated, if possible, before use.

Forging		The alloy can be forged or hot-upset by conventional means.

Hot Working		Can be hot formed or extruded. Should be solution heat treated following hot forming.

Cold Working		Readily cold worked by conventional methods.

Annealing		Normally supplied and use in the solution treated condition, a 2050 F soak followed by rapid quench.

Aging		Not normally done. The alloy is used in solution treated condition.

Tempering		Not applicable to this alloy.

Hardening		Hardened by cold working only.

Other Mechanical Props		"U" notch impact strength at -320 F of 263 ft. lbs. in solution treated condition.

Physical Data : [top]

Density (lb / cu. in.)	0.321
Specific Gravity	8.89
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.102
Electrical Resistivity (microhm-cm (at 68 Deg F))	779
Melting Point (Deg F)	2500
Thermal Conductivity	78
Mean Coeff Thermal Expansion	6.2
Modulus of Elasticity Tension	29.8

Form		Plate
Condition		Heat treated at 2050 F(1121 C)
Temper		70
Tensile Strength		112
Yield Strength		52
Elongation		59
Rockwell		B88
Form		Plate
Condition		Heat treated at 2050 F(1121 C)
Temper		1000
Tensile Strength		86
Yield Strength		30
Elongation		59
Form		Sheet
Condition		Heat treated at 2050 F(1121 C)
Temper		70
Tensile Strength		108
Yield Strength		49
Elongation		61
Rockwell		B90
Form		Sheet
Condition		Heat treated at 2050 F(1121 C)
Temper		400
Tensile Strength		97
Yield Strength		42
Elongation		60
Form		Sheet
Condition		Heat treated at 2050 F(1121 C)
Temper		600
Tensile Strength		97
Yield Strength		34
Elongation		67
Form		Sheet
Condition		Heat treated at 2050 F(1121 C)
Temper		800
Tensile Strength		95
Yield Strength		31
Elongation		67