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SAE-AISI 8620 Steel vs. CR005A Copper

SAE-AISI 8620 steel belongs to the iron alloys classification, while CR005A copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8620 steel and the bottom bar is CR005A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 13 to 31
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Tensile Strength: Ultimate (UTS), MPa 520 to 690
230
Tensile Strength: Yield (Proof), MPa 360 to 570
140

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 410
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 39
380
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
100
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
100

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
31
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
41
Embodied Water, L/kg 50
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 150
31
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 880
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 18 to 24
7.1
Strength to Weight: Bending, points 18 to 22
9.3
Thermal Diffusivity, mm2/s 10
110
Thermal Shock Resistance, points 15 to 20
8.1

Alloy Composition

Carbon (C), % 0.18 to 0.23
0
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0
99.9 to 100
Iron (Fe), % 96.9 to 98
0
Manganese (Mn), % 0.7 to 0.9
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
0
Oxygen (O), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Silver (Ag), % 0
0 to 0.015
Sulfur (S), % 0 to 0.040
0