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CR021A Copper vs. S31803 Stainless Steel

CR021A copper belongs to the copper alloys classification, while S31803 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 CR021A copper and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 15
29
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 43
80
Tensile Strength: Ultimate (UTS), MPa 230
710
Tensile Strength: Yield (Proof), MPa 140
500

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1060
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1040
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 380
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
17
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.6
Embodied Energy, MJ/kg 41
49
Embodied Water, L/kg 320
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
180
Resilience: Unit (Modulus of Resilience), kJ/m3 83
630
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.1
25
Strength to Weight: Bending, points 9.3
23
Thermal Diffusivity, mm2/s 110
4.3
Thermal Shock Resistance, points 8.1
20

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
21 to 23
Copper (Cu), % 99.95 to 99.998
0
Iron (Fe), % 0
63.7 to 71.9
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0.0020 to 0.0070
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.020