Related Tradenames :

 

Carpenter C276 Alloy (tm) , Nickelvac HC-276 (tm) , Nicrofer 5716 hMoW (tm)

Chemistry Data :

 
- 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

Principle 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.

Mechanical Data :

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