What is C-22?
Chemical Composition and Physical Properties
Chemical Composition of C-22
Element Nominal UNS N06022
Carbon <0.010 0.010 maximum
Chromium 22 20 - 22.5
Cobalt <2.5 2.5 maximum
Iron 3 2 - 6
Manganese <50 0.5 maximum
Molybdenum 13 12.5 - 14.5
Nickel 56 Balance
Phosphorus <0.02 0.02 max
Silicon <0.08 0.08 maximum
Sulphur <0.02 0.02 maximum
Tungsten 3 2.5 - 3.5
Vanadium <0.35 0.35 maximum

C22 Alloy Specifications C22 Alloy Advantages
C22 Alloy Applications Welding C22 Alloy
Machining C22 Alloy Frequently Asked Questions


Banded Microstructure - Inferior Quality


Good Microstructure - Due to ESR
and Annealing Processes

Pictures courtesy of Dr. Hira Ahluwalia,
President of Material Selection Resources

Physical Properties of Alloys
Alloy Elastic Modulus Thermal Conductivity
at 212° F		 Expansion Coefficient
from 77 to 212° F
psi x 106 MPa Btu-ft/hr-ft2-°F W/mK 10-6/°F 10-6/°C
Type 316L 29.0 200 9.2 16.0 8.5 17.3
C-276 29.8 205 6.4 9.9 6.2 11.2
C22 29.9 206 6.5 10.2 6.9 12.4
Titanium 15.0 103 9.5 16.4 5.0 9.1
Alloy 904L 28.3 195 7.6 13.2 8.3 15.0
AL-6XN 28.3 195 6.8 11.8 8.5 15.3
Alloy 625 29.7 205 6.2 10.7 7.1 12.8
Nickel 200 30.0 207 38.8 67.1 7.4 13.4

Physical Properties of C-22
Property Temperature Value Units
Density N/A 0.314
8.69		 lb/in3
g/cm3
Modulus of Elasticity N/A 29.9 x 106
206,000		 psi
MPa
Melting Range N/A 2475 to 2550
1357 to 1399		 °F
°C
Thermal Conductivity
 118°F
48°C		 70
48 		Btu·in/ft2hr·°F
W/mK
Coefficient of Expansion
 75 to 200°F
24 to 93°C		 6.9
12.4 x 10-6		 µin/in·°F
m/m·K
Specific Heat Capacity
 126°F
52°C		 0.099
414		 Btu/lb·°F
J/kg·K
Electrical Resistivity
 75°F
24°C		 44.8
1.14		 microhm·in
microhm·m

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