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Nickel & Nickel Alloys

N10276 • 2.4819
  • Application

C276 is a nickel-molybdenum-chromium superalloy with an addition oftungsten designed to have excellent corrosion resistance in a wide range of severe environments. The high chromium, molybdenum and tungsten contents make the alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures.

Alloy C276 is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process application in an as welded condition. Alloy C276 is widely used in the most severe environments such as mixed acid chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment, and recovery of sour oil and gas.

  • Typical manufacturing specifications

 ASTM B622
 Also individual customer specifications.

  • Industries predominantly using this grade 

Chemical processes, Oil and gas etc.

1-7

Technical Data

Chemical composition(% by Weight)

Element

Cr

Mo

Fe

W

C

Si

Co

Mn

V

P

S

Minimum

14.5

15.0

4.0

3.0

-

-

-

-

-

-

-

Maximum

16.5

17.0

7.0

4.5

0.001

0.08

2.50

1.0

0.35

0.04

0.03

Aiming

15.5

16.0

6.0

3.5

0.003

0.02

2.8

0.1

0.05

0.001

0.001

Mechanical Properties

Specifications(Tubing, Annealed) Actual data
Tensile Rm
100
ksi (min.)
108 ~ 130
ksi (min.)
Tensile Rm
690
MPa (min.)
750 ~ 900
MPa (min.)
Yield (R.p. 0.2%)
41
ksi (min.)
50 ~ 72
ksi (min.)
Yield (R.p. 0.2%)
283
MPa (min.)
350 ~ 500
MPa (min.)
Elongation
40
% (min.)
50 ~ 60
% (min.)