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ACI-ASTM CF20 Steel vs. C19700 Copper

ACI-ASTM CF20 steel belongs to the iron alloys classification, while C19700 copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF20 steel and the bottom bar is C19700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 50
2.4 to 13
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
43
Tensile Strength: Ultimate (UTS), MPa 530
400 to 530
Tensile Strength: Yield (Proof), MPa 250
330 to 520

Thermal Properties

Latent Heat of Fusion, J/g 300
210
Maximum Temperature: Mechanical, °C 970
200
Melting Completion (Liquidus), °C 1420
1090
Melting Onset (Solidus), °C 1410
1040
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 16
250
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
86 to 88
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
87 to 89

Otherwise Unclassified Properties

Base Metal Price, % relative 16
30
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.1
2.6
Embodied Energy, MJ/kg 44
41
Embodied Water, L/kg 150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
12 to 49
Resilience: Unit (Modulus of Resilience), kJ/m3 160
460 to 1160
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 19
12 to 16
Strength to Weight: Bending, points 19
14 to 16
Thermal Diffusivity, mm2/s 4.3
73
Thermal Shock Resistance, points 11
14 to 19

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0
Cobalt (Co), % 0
0 to 0.050
Copper (Cu), % 0
97.4 to 99.59
Iron (Fe), % 64.2 to 74
0.3 to 1.2
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.010 to 0.2
Manganese (Mn), % 0 to 1.5
0 to 0.050
Nickel (Ni), % 8.0 to 11
0 to 0.050
Phosphorus (P), % 0 to 0.040
0.1 to 0.4
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.2