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C55280 Copper vs. S31254 Stainless Steel

C55280 copper belongs to the copper alloys classification, while S31254 stainless steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is C55280 copper and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 180
720

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Maximum Temperature: Mechanical, °C 200
1090
Melting Completion (Liquidus), °C 790
1460
Melting Onset (Solidus), °C 640
1420
Specific Heat Capacity, J/kg-K 410
460
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.0
Embodied Carbon, kg CO2/kg material 4.2
5.5
Embodied Energy, MJ/kg 67
74

Common Calculations

Stiffness to Weight: Axial, points 6.9
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 5.9
25
Strength to Weight: Bending, points 8.3
22
Thermal Shock Resistance, points 7.4
15

Alloy Composition

Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 90.5 to 91.4
0.5 to 1.0
Iron (Fe), % 0
51.4 to 56.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 6.8 to 7.2
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Silver (Ag), % 1.8 to 2.2
0
Sulfur (S), % 0
0 to 0.010
Residuals, % 0 to 0.15
0