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ACI-ASTM CN3MN Steel vs. C72150 Copper-nickel

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while C72150 copper-nickel belongs to the copper alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN3MN steel and the bottom bar is C72150 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
99
Elastic (Young's, Tensile) Modulus, GPa 210
150
Elongation at Break, % 39
29
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
55
Tensile Strength: Ultimate (UTS), MPa 620
490
Tensile Strength: Yield (Proof), MPa 300
210

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
600
Melting Completion (Liquidus), °C 1460
1210
Melting Onset (Solidus), °C 1410
1250
Specific Heat Capacity, J/kg-K 460
410
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 16
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.6

Otherwise Unclassified Properties

Base Metal Price, % relative 33
45
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 6.2
6.1
Embodied Energy, MJ/kg 84
88
Embodied Water, L/kg 200
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
120
Resilience: Unit (Modulus of Resilience), kJ/m3 210
150
Stiffness to Weight: Axial, points 14
9.1
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 21
15
Strength to Weight: Bending, points 20
15
Thermal Diffusivity, mm2/s 3.4
6.0
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
52.5 to 57
Iron (Fe), % 41.4 to 50.3
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.050
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
43 to 46
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.5