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C18100 Copper vs. S42030 Stainless Steel

C18100 copper belongs to the copper alloys classification, while S42030 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C18100 copper and the bottom bar is S42030 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 8.3
16
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 47
76
Shear Strength, MPa 300
410
Tensile Strength: Ultimate (UTS), MPa 510
670
Tensile Strength: Yield (Proof), MPa 460
410

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
780
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 1020
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 320
28
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 81
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.5
Embodied Energy, MJ/kg 43
34
Embodied Water, L/kg 310
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
92
Resilience: Unit (Modulus of Resilience), kJ/m3 900
440
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 16
24
Strength to Weight: Bending, points 16
22
Thermal Diffusivity, mm2/s 94
7.7
Thermal Shock Resistance, points 18
24

Alloy Composition

Carbon (C), % 0
0 to 0.3
Chromium (Cr), % 0.4 to 1.2
12 to 14
Copper (Cu), % 98.7 to 99.49
2.0 to 3.0
Iron (Fe), % 0
77.6 to 85
Magnesium (Mg), % 0.030 to 0.060
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 3.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0 to 0.5
0