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C81400 Copper vs. S41425 Stainless Steel

C81400 copper belongs to the copper alloys classification, while S41425 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
17
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 370
920
Tensile Strength: Yield (Proof), MPa 250
750

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
810
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1070
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 260
16
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 33
13
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
150
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1420
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
33
Strength to Weight: Bending, points 13
27
Thermal Diffusivity, mm2/s 75
4.4
Thermal Shock Resistance, points 13
33

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0.6 to 1.0
12 to 15
Copper (Cu), % 98.4 to 99.38
0 to 0.3
Iron (Fe), % 0
74 to 81.9
Manganese (Mn), % 0
0.5 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Residuals, % 0 to 0.5
0