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CR021A Copper vs. SAE-AISI H12 Steel

CR021A copper belongs to the copper alloys classification, while SAE-AISI H12 steel belongs to the iron alloys. There are 23 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 CR021A copper and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
75
Tensile Strength: Ultimate (UTS), MPa 230
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Melting Completion (Liquidus), °C 1090
1480
Melting Onset (Solidus), °C 1040
1440
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 380
36
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.0
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 41
41
Embodied Water, L/kg 320
76

Common Calculations

Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 7.1
24 to 65
Strength to Weight: Bending, points 9.3
22 to 42
Thermal Diffusivity, mm2/s 110
9.8
Thermal Shock Resistance, points 8.1
22 to 60

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.3 to 0.4
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 99.95 to 99.998
0 to 0.25
Iron (Fe), % 0
87.8 to 91.7
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0.2 to 0.5
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0.0020 to 0.0070
0 to 0.030
Silicon (Si), % 0
0.8 to 1.2
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.0 to 1.7
Vanadium (V), % 0
0 to 0.5