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Hastelloy

Hastelloy is a family of nickel-based alloys that are known for their excellent corrosion resistance in a variety of harsh environments. Hastelloy alloys are used in a wide range of industries, including chemical processing, aerospace, and marine engineering. Here is a brief description of Hastelloy products with grades

  • Hastelloy C276: Hastelloy C276 is a nickel-molybdenum-chromium alloy that offers excellent corrosion resistance in a wide range of environments, including oxidizing and reducing environments. It is often used in chemical processing, pulp and paper production, and other industrial applications.
  • Hastelloy B-2: Hastelloy B-2 is a nickel-molybdenum alloy that is highly resistant to hydrochloric acid, sulfuric acid, and other strong acids. It is often used in chemical processing, pharmaceuticals, and other applications where strong acids are present.
  • Hastelloy X: Hastelloy X is a nickel-chromium-iron-molybdenum alloy that offers excellent oxidation resistance at high temperatures. It is often used in gas turbine engines, industrial furnaces, and other high-temperature applications.
  • Hastelloy C-22: Hastelloy C-22 is a nickel-chromium-molybdenum-tungsten alloy that offers excellent resistance to oxidizing and reducing environments. It is often used in chemical processing, waste treatment, and other applications where corrosion resistance is critical.
  • Hastelloy G-30: Hastelloy G-30 is a nickel-chromium-molybdenum alloy that offers excellent resistance to phosphoric acid and other oxidizing and reducing acids. It is often used in chemical processing, pulp and paper production, and other industrial applications.

Hastelloy products with these grades include pipes, tubes, flanges, fasteners, fittings, and round bars.

pipe and tube
Hastelloy Pipe
Steel Bar
Hastelloy Bar
Steel Flanges
Hastelloy Flanges
Steel Pipe Fittings
Hastelloy Pipe Fittings
Steel Fasteners
Hastelloy Fasteners
Steel Sheet
Hastelloy Sheet

Chemical Compositions

Alloy Type Cr% C% Co% W% Mo% V% Ai% Ti% Nb % Fe% Cu% Ni%
B 0.6 0.1 1.25 28 0.3 5.5 rest / bal
B2 1 0.02 1 26.0-30.0 2 rest / bal
C276 14.0-16.5 0.02 2.5 3.0-4.5 15.0-17.0 0.35 4.0-7.0 rest / bal
X 22 0.1 1.5 0.6 9 18.5 rest / bal
C 16 0.07 1.25 40 17 0.3 5.75 rest / bal
C4 14.0-18.0 0.015 2 14.0-17.0 0..70 3 rest / bal
N 7 0.06 0.25 0.2 16.5 3 0.1 rest / bal
S 15.5 0.02 2 1 14.5 0.6 0.2 3 rest / bal
F 22 0.02 1.25 0.5 6.5 2.1 21 rest / bal
G 21.0-23.5 0.05 2.5 1 5.5-7.5 1.7-2.5 18.0-21.0 1.5-2.5 rest / bal
G2 23.0-26.0 0.03 5.0-7.0 0.70-1.50 rest / bal 0.70-1.20 47.0-52.0
W 5 0.06 1.25 24.5 5.5 rest / bal

Mechanical Properties

Alloy name Critical Pitting Temp in Acidified 6% FeCl3 Acidified 6% FeCl3 Critical Crevice Temperature
°F °C °F °C
316L 59 15 32 0
254SMO 140 60 86 30
625 212 100 104 40
C-276 >302 >150 131 55
C-22® >302 >150 176 80

Equivalent Grades

Alloy Name UNS WNR
B-2 N10665 DIN 2.4617
C N10002  
C-4 N06455 DIN 2.4610
C-276 N10276 DIN 2.4819
G N06007  
G-3 N06985 DIN 2.4619
N N10003  
S N06635  
W N10004  
X N06002 DIN 2.4665
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