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CR023A Copper vs. SAE-AISI H21 Steel

CR023A copper belongs to the copper alloys classification, while SAE-AISI H21 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is CR023A copper and the bottom bar is SAE-AISI H21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
76
Tensile Strength: Ultimate (UTS), MPa 220
720 to 1790

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Melting Completion (Liquidus), °C 1090
1630
Melting Onset (Solidus), °C 1040
1580
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 380
27
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 31
23
Density, g/cm3 9.0
8.5
Embodied Carbon, kg CO2/kg material 2.6
4.5
Embodied Energy, MJ/kg 41
68
Embodied Water, L/kg 320
72

Common Calculations

Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 6.8
23 to 58
Strength to Weight: Bending, points 9.0
21 to 38
Thermal Diffusivity, mm2/s 110
7.1
Thermal Shock Resistance, points 7.8
24 to 59

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.28 to 0.36
Chromium (Cr), % 0
3.0 to 3.8
Copper (Cu), % 99.9 to 99.995
0 to 0.25
Iron (Fe), % 0
87.6 to 93.8
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0.0050 to 0.013
0 to 0.030
Silicon (Si), % 0
0.15 to 0.5
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
8.5 to 10
Vanadium (V), % 0
0.3 to 0.6