Hastelloy® C-22® Properties

The most corrosion-resistant metal in its class is ready to ship from CSI.

Every metal has its design limitations, and Hastelloy® C-22® provides a corrosion-resistant solution where many other materials have failed. This, combined with its commercial availability, makes it an excellent choice for demanding specifications.

Chemical Composition of Hastelloy C-22

Hastelloy C-22 is the most adaptable nickel alloy in the Hastelloy C category. It typically contains 22% chromium, 13% molybdenum, and less than 3% iron.

ElementComposition

(%)

Nickel56.00 (As Balanced)
Cobalt2.5 max
Chromium22
Molybdenum13
Tungsten3
Iron3 max
Silicon0.08 max
Manganese0.50 max
Carbon0.010 max
Vanadium0.35 max

Alloy Chemical Comparison

Hastelloy C22

(UNS N06022)

C-276

(UNS N10276)

C-4

(UNS N06455)

Alloy 625

(UNS N06625)

% Nickel56.00 (As Balance)57.00 (As Balance)65.00 (As Balance)62.00 (As Balance)
% Cobalt2.5 max2.5 max2.0 max1.0 max
% Chromium22.016.016.021.0
% Molybdenum12.516.016.09.0
% Tungsten3.04.0--
% Iron (Fe)3.05.03.05.0 max
% Silicon0.08 max0.08 max0.08 max0.5 max
% Manganese0.50 max1.0 max1.0 max0.5 max
% Carbon0.010 max0.010 max0.010 max0.1 max
% Vanadium0.35 max0.35 max--
% Phosphorous-0.0250.025-
% Sulfur-0.010 max0.010 max-
% Niobium---3.6
% Titanium--0.70 max0.4 max
% Aluminum---0.4 max
% Copper-0.5 max0.5 max-

Physical Properties of Hastelloy C-22

Superior physical properties such as ductility, durability, thermal conductivity, and hardness make Hastelloy C-22 a prime choice for fabrication.

PropertyValue
Density0.314 lb/in
8.69 g/cm3
Modulus of Elasticity30.3 x 106 psi
209 GPa
Melting Range2475 – 2550°F
1357 – 1399°C
Thermal Conductivity
212°F
100°C

7.7 Btu/hr • ft • °F
11.1 W/mK
Mean Coefficient of Thermal Expansion
75 to 200°F
24 to 93°C

6.9 μm/in.-°F
12.4 μm/m.°C
Specific Heat Capacity0.099 Btu/lb.-°F
414 J/Kg-K
Electrical Resistivity730.7 µΩm•circ mil/ft
1.215 µΩm
Magnetic Permeability
at 200 oersted (15.9 kA/m)
≤1.001