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C18100 Copper vs. S32950 Stainless Steel

C18100 copper belongs to the copper alloys classification, while S32950 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C18100 copper and the bottom bar is S32950 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 8.3
17
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 47
80
Shear Strength, MPa 300
480
Tensile Strength: Ultimate (UTS), MPa 510
780
Tensile Strength: Yield (Proof), MPa 460
550

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1080
1430
Melting Onset (Solidus), °C 1020
1390
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 320
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 43
47
Embodied Water, L/kg 310
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
120
Resilience: Unit (Modulus of Resilience), kJ/m3 900
730
Stiffness to Weight: Axial, points 7.3
15
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 16
28
Strength to Weight: Bending, points 16
24
Thermal Diffusivity, mm2/s 94
4.3
Thermal Shock Resistance, points 18
21

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.4 to 1.2
26 to 29
Copper (Cu), % 98.7 to 99.49
0
Iron (Fe), % 0
60.3 to 69.4
Magnesium (Mg), % 0.030 to 0.060
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0
3.5 to 5.2
Nitrogen (N), % 0
0.15 to 0.35
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.010
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0 to 0.5
0