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SAE-AISI A8 Steel vs. CR021A Copper

SAE-AISI A8 steel belongs to the iron alloys classification, while CR021A copper belongs to the copper 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 SAE-AISI A8 steel and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 74
43
Tensile Strength: Ultimate (UTS), MPa 700 to 1920
230

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Melting Completion (Liquidus), °C 1480
1090
Melting Onset (Solidus), °C 1430
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 37
380
Thermal Expansion, µm/m-K 12
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
31
Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 2.3
2.6
Embodied Energy, MJ/kg 31
41
Embodied Water, L/kg 73
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 25 to 68
7.1
Strength to Weight: Bending, points 22 to 44
9.3
Thermal Diffusivity, mm2/s 9.9
110
Thermal Shock Resistance, points 22 to 62
8.1

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
99.95 to 99.998
Iron (Fe), % 88.5 to 91.9
0
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.2 to 1.7
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0.0020 to 0.0070
Silicon (Si), % 0.75 to 1.1
0
Silver (Ag), % 0
0 to 0.015
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 1.0 to 1.5
0