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SAE-AISI 1078 Steel vs. CR021A Copper

SAE-AISI 1078 steel belongs to the iron alloys classification, while CR021A copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1078 steel and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 11 to 14
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
43
Tensile Strength: Ultimate (UTS), MPa 730 to 780
230
Tensile Strength: Yield (Proof), MPa 430 to 570
140

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 400
200
Melting Completion (Liquidus), °C 1460
1090
Melting Onset (Solidus), °C 1420
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 49
380
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
98
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
99

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
31
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 18
41
Embodied Water, L/kg 45
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 90
31
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 860
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 26 to 28
7.1
Strength to Weight: Bending, points 23 to 24
9.3
Thermal Diffusivity, mm2/s 13
110
Thermal Shock Resistance, points 25 to 26
8.1

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 0.72 to 0.85
0
Copper (Cu), % 0
99.95 to 99.998
Iron (Fe), % 98.5 to 99
0
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.040
0.0020 to 0.0070
Silver (Ag), % 0
0 to 0.015
Sulfur (S), % 0 to 0.050
0