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ACI-ASTM CF20 Steel vs. C18100 Copper

ACI-ASTM CF20 steel belongs to the iron alloys classification, while C18100 copper belongs to the copper alloys. There are 28 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 C18100 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 50
8.3
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
47
Tensile Strength: Ultimate (UTS), MPa 530
510
Tensile Strength: Yield (Proof), MPa 250
460

Thermal Properties

Latent Heat of Fusion, J/g 300
210
Maximum Temperature: Mechanical, °C 970
200
Melting Completion (Liquidus), °C 1420
1080
Melting Onset (Solidus), °C 1410
1020
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 16
320
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
80
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
81

Otherwise Unclassified Properties

Base Metal Price, % relative 16
31
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 44
43
Embodied Water, L/kg 150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
40
Resilience: Unit (Modulus of Resilience), kJ/m3 160
900
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 4.3
94
Thermal Shock Resistance, points 11
18

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0.4 to 1.2
Copper (Cu), % 0
98.7 to 99.49
Iron (Fe), % 64.2 to 74
0
Magnesium (Mg), % 0
0.030 to 0.060
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.5