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S21600 Stainless Steel vs. C72200 Copper-nickel

S21600 stainless steel belongs to the iron alloys classification, while C72200 copper-nickel belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is S21600 stainless steel and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
130
Poisson's Ratio 0.28
0.33
Rockwell B Hardness 86
71 to 86
Shear Modulus, GPa 79
48
Tensile Strength: Ultimate (UTS), MPa 710
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 290
220
Maximum Temperature: Mechanical, °C 990
230
Melting Completion (Liquidus), °C 1420
1180
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
36
Density, g/cm3 7.7
8.9
Embodied Carbon, kg CO2/kg material 3.6
3.9
Embodied Energy, MJ/kg 50
59
Embodied Water, L/kg 160
300

Common Calculations

Stiffness to Weight: Axial, points 14
8.0
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25
11 to 18
Strength to Weight: Bending, points 23
12 to 17
Thermal Shock Resistance, points 15
12 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17.5 to 22
0.3 to 0.7
Copper (Cu), % 0
78.1 to 84.2
Iron (Fe), % 57.6 to 67.8
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 7.5 to 9.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
15 to 18
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.2