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CR021A Copper vs. S35045 Stainless Steel

CR021A copper belongs to the copper alloys classification, while S35045 stainless steel belongs to the iron alloys. There are 28 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 CR021A copper and the bottom bar is S35045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 15
39
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
78
Tensile Strength: Ultimate (UTS), MPa 230
540
Tensile Strength: Yield (Proof), MPa 140
190

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1090
1390
Melting Onset (Solidus), °C 1040
1340
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 380
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
34
Density, g/cm3 9.0
8.0
Embodied Carbon, kg CO2/kg material 2.6
5.8
Embodied Energy, MJ/kg 41
83
Embodied Water, L/kg 320
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
170
Resilience: Unit (Modulus of Resilience), kJ/m3 83
94
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 7.1
19
Strength to Weight: Bending, points 9.3
19
Thermal Diffusivity, mm2/s 110
3.2
Thermal Shock Resistance, points 8.1
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.060 to 0.1
Chromium (Cr), % 0
25 to 29
Copper (Cu), % 99.95 to 99.998
0 to 0.75
Iron (Fe), % 0
29.4 to 42.6
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
32 to 37
Phosphorus (P), % 0.0020 to 0.0070
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6