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ACI-ASTM CH20 Steel vs. C71520 Copper-nickel

ACI-ASTM CH20 steel belongs to the iron alloys classification, while C71520 copper-nickel 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 CH20 steel and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 38
10 to 45
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
51
Tensile Strength: Ultimate (UTS), MPa 610
370 to 570
Tensile Strength: Yield (Proof), MPa 350
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 310
230
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1410
1170
Melting Onset (Solidus), °C 1430
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 14
32
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
5.8

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: Ultimate (Unit Rupture Work), MJ/m3 200
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 300
67 to 680
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22
12 to 18
Strength to Weight: Bending, points 21
13 to 17
Thermal Diffusivity, mm2/s 3.7
8.9
Thermal Shock Resistance, points 15
12 to 19

Alloy Composition


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Carbon (C), % 0 to 0.2
0 to 0.050
Chromium (Cr), % 22 to 26
0
Copper (Cu), % 0
65 to 71.6
Iron (Fe), % 54.7 to 66
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
28 to 33
Phosphorus (P), % 0 to 0.040
0 to 0.2
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0 to 0.020
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5