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ACI-ASTM CH20 Steel vs. C71640 Copper-nickel

ACI-ASTM CH20 steel belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 26 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 CH20 steel and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
52
Tensile Strength: Ultimate (UTS), MPa 610
490 to 630
Tensile Strength: Yield (Proof), MPa 350
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1410
1180
Melting Onset (Solidus), °C 1430
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
29
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 20
40
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.7
5.0
Embodied Energy, MJ/kg 53
73
Embodied Water, L/kg 180
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 300
130 to 750
Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 22
15 to 20
Strength to Weight: Bending, points 21
16 to 18
Thermal Diffusivity, mm2/s 3.7
8.2
Thermal Shock Resistance, points 15
16 to 21

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 22 to 26
0
Copper (Cu), % 0
61.7 to 67.8
Iron (Fe), % 54.7 to 66
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
1.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
29 to 32
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5