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CR012A Copper vs. ACI-ASTM CG8M Steel

CR012A copper belongs to the copper alloys classification, while ACI-ASTM CG8M steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is CR012A copper and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 15
45
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
79
Tensile Strength: Ultimate (UTS), MPa 220
550
Tensile Strength: Yield (Proof), MPa 130
300

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1020
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1040
1400
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 390
16
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
20
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 2.7
4.1
Embodied Energy, MJ/kg 42
56
Embodied Water, L/kg 360
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
210
Resilience: Unit (Modulus of Resilience), kJ/m3 76
220
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 6.8
19
Strength to Weight: Bending, points 9.0
19
Thermal Diffusivity, mm2/s 110
4.3
Thermal Shock Resistance, points 7.8
12

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 99.85 to 99.94
0
Iron (Fe), % 0
58.8 to 70
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
9.0 to 13
Oxygen (O), % 0 to 0.040
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.5
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.040