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ACI-ASTM CH20 Steel vs. C72500 Copper-nickel

ACI-ASTM CH20 steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CH20 steel and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 78
45
Tensile Strength: Ultimate (UTS), MPa 610
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1410
1130
Melting Onset (Solidus), °C 1430
1060
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 14
54
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 20
35
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.7
3.6
Embodied Energy, MJ/kg 53
55
Embodied Water, L/kg 180
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22
13 to 24
Strength to Weight: Bending, points 21
14 to 21
Thermal Diffusivity, mm2/s 3.7
16
Thermal Shock Resistance, points 15
14 to 27

Alloy Composition


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Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 22 to 26
0
Copper (Cu), % 0
85.2 to 89.7
Iron (Fe), % 54.7 to 66
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
0 to 0.2
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
8.5 to 10.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
1.8 to 2.8
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2