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ACI-ASTM CN7M Steel vs. C18200 Copper

ACI-ASTM CN7M steel belongs to the iron alloys classification, while C18200 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 CN7M steel and the bottom bar is C18200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 44
11 to 40
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
44
Tensile Strength: Ultimate (UTS), MPa 480
310 to 530
Tensile Strength: Yield (Proof), MPa 200
97 to 450

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Maximum Temperature: Mechanical, °C 1100
200
Melting Completion (Liquidus), °C 1410
1080
Melting Onset (Solidus), °C 1450
1070
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 21
320
Thermal Expansion, µm/m-K 15
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
80
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
81

Otherwise Unclassified Properties

Base Metal Price, % relative 32
31
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 5.6
2.6
Embodied Energy, MJ/kg 78
41
Embodied Water, L/kg 210
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
43 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 110
40 to 860
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 17
9.6 to 16
Strength to Weight: Bending, points 17
11 to 16
Thermal Diffusivity, mm2/s 5.6
93
Thermal Shock Resistance, points 12
11 to 18

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 19 to 22
0.6 to 1.2
Copper (Cu), % 3.0 to 4.0
98.6 to 99.4
Iron (Fe), % 37.4 to 48.5
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0