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C18100 Copper vs. S32654 Stainless Steel

C18100 copper belongs to the copper alloys classification, while S32654 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 S32654 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 8.3
45
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 47
82
Shear Strength, MPa 300
590
Tensile Strength: Ultimate (UTS), MPa 510
850
Tensile Strength: Yield (Proof), MPa 460
490

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 1020
1410
Specific Heat Capacity, J/kg-K 390
460
Thermal Conductivity, W/m-K 320
11
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
34
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 2.7
6.4
Embodied Energy, MJ/kg 43
87
Embodied Water, L/kg 310
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
330
Resilience: Unit (Modulus of Resilience), kJ/m3 900
570
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 16
29
Strength to Weight: Bending, points 16
25
Thermal Diffusivity, mm2/s 94
2.9
Thermal Shock Resistance, points 18
19

Alloy Composition

Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0.4 to 1.2
24 to 25
Copper (Cu), % 98.7 to 99.49
0.3 to 0.6
Iron (Fe), % 0
38.3 to 45.3
Magnesium (Mg), % 0.030 to 0.060
0
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
7.0 to 8.0
Nickel (Ni), % 0
21 to 23
Nitrogen (N), % 0
0.45 to 0.55
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0 to 0.5
0