Nickel Alloy 22, Hastelloy®C-22, Inconel® 22

Alloy 22, which is also sold under the brand names Hastelloy® C-22, Inconel® 22, is a fully austenitic nickel-based super alloy. Like many super-alloys, Alloy 22 offers resistance against corrosion, pitting, crevice corrosion, intergranular attacks, and stress corrosion cracking. It gives users high ductility, which aids in cold forming and is resistance to aqueous corrosion at elevated temperatures.

Wide varieties of industries rely on Alloy 22 for a number of different applications, including:

  • Chemical processing
  • Pulp and paper processing
  • Oil and gas
  • Pesticide production
  • Pollution control
  • Sour gas services
  • Waste incinerators

Alloy 22 is even utilized in nuclear fuel reprocessing, flue gas desulfurization, and many seawater applications.

In order to called Alloy 22, an alloy must be composed of a balanced level of Nickel as well as:

  • Cr 20-22.5%
  • Mo 12.5-14.5
  • Co 2.5% Max
  • W 2.5-3.5%
  • Fe 2-6%

Alloy 22 comes in flat bar, forging stock, hexagon, plate, round bar, sheet, strip, and wire. These forms of Alloy 22 meet or exceed a number of different critical industry standards from the ASTM, ASME, ISO, and DIN family. To form Alloy 22, you can use standard processes, however optimum forging occurs between 1750-2050 °F and annealing between 2020-2150 °F. Alloy 22 can be gas tungsten-arc, shield metal-arc, and gas metal arc welded. Alloy 22 is a cost-effective super alloy and an excellent choice for a variety of applications that require superior performance.

If you are in the market for Nickel Alloy 22, Hastelloy® C-22, or Inconel® 22, Continental Steel can source the material needed. We stock and sell all three in a wide variety of sizes and forms.

We stock and sell Nickel Alloy 22, Hastelloy®C- 22 and Inconel® 22 in Flat Bar, Forging Stock, Hexagon, Plate, Round Bar, Sheet, Strip and Wire

Chemical Composition of Nickel Alloy 22, Hastelloy®C- 22 and Inconel® 22

Al

0.2 max

C

.015 max

Co

2.5 max

Fe

2.0 - 6.0

Mn

.50 max

Mo

12.5 - 14.5

Ni

bal

P

.02 max

S

.02 max

Si

.08 max

Ti

0.6 - 1.2

V

.35 max

W

2.5 - 3.5


Nickel Alloy 22, Hastelloy®C- 22 and Inconel® 22 Standards

Rod, Bar, Wire and Forging Stock

ASTM B 462
ASTM B 564
ASME SB 564
ASTM B 574
ASME SB 574
ASME Code Case 2226
ASME Code Case N-621
ISO 9723
ISO 9724
DIN 17752
DIN 17753
DIN 17754

Plate, Sheet and Strip

ASTM B 575/B 906
ASME SB 575/SB 906
ASME Code Case 2226
ASME Code Case N-621
ISO 6208
DIN 17750

Pipe and Tub

ASTM B 619/B 775
ASME SB 619/SB 775
ASTM B 622/B 829
ASME SB 622/SB 829
ASTM B 626/B 751
ASME SB 626/SB 751
ASME Code Case 2226
ASME Code Case N-621
ISO 6207
DIN 17751

Fittings

ASTM B 366
ASME SB-366


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