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CR012A Copper vs. SAE-AISI 4340M Steel

CR012A copper belongs to the copper alloys classification, while SAE-AISI 4340M 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 CR012A copper and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 15
6.0
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
72
Tensile Strength: Ultimate (UTS), MPa 220
2340
Tensile Strength: Yield (Proof), MPa 130
1240

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
430
Melting Completion (Liquidus), °C 1090
1440
Melting Onset (Solidus), °C 1040
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 390
38
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 100
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 33
3.9
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.9
Embodied Energy, MJ/kg 42
26
Embodied Water, L/kg 360
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
120
Resilience: Unit (Modulus of Resilience), kJ/m3 76
4120
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 6.8
84
Strength to Weight: Bending, points 9.0
51
Thermal Diffusivity, mm2/s 110
10
Thermal Shock Resistance, points 7.8
70

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 1.0
Copper (Cu), % 99.85 to 99.94
0
Iron (Fe), % 0
93.3 to 94.8
Manganese (Mn), % 0
0.65 to 0.9
Molybdenum (Mo), % 0
0.35 to 0.45
Nickel (Ni), % 0
1.7 to 2.0
Oxygen (O), % 0 to 0.040
0
Phosphorus (P), % 0
0 to 0.012
Silicon (Si), % 0
1.5 to 1.8
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1