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ACI-ASTM CF20 Steel vs. C82700 Copper

ACI-ASTM CF20 steel belongs to the iron alloys classification, while C82700 copper belongs to the copper alloys. There are 27 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 ACI-ASTM CF20 steel and the bottom bar is C82700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 50
1.8
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
46
Tensile Strength: Ultimate (UTS), MPa 530
1200
Tensile Strength: Yield (Proof), MPa 250
1020

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Maximum Temperature: Mechanical, °C 970
300
Melting Completion (Liquidus), °C 1420
950
Melting Onset (Solidus), °C 1410
860
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
20
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
21

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 3.1
12
Embodied Energy, MJ/kg 44
180
Embodied Water, L/kg 150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
21
Resilience: Unit (Modulus of Resilience), kJ/m3 160
4260
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 19
38
Strength to Weight: Bending, points 19
29
Thermal Diffusivity, mm2/s 4.3
39
Thermal Shock Resistance, points 11
41

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
2.4 to 2.6
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0 to 0.090
Copper (Cu), % 0
94.6 to 96.7
Iron (Fe), % 64.2 to 74
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
1.0 to 1.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.15
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5