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ACI-ASTM CN3MN Steel vs. C71000 Copper-nickel

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while C71000 copper-nickel belongs to the copper alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. 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 CN3MN steel and the bottom bar is C71000 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
49
Tensile Strength: Ultimate (UTS), MPa 620
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 310
230
Maximum Temperature: Mechanical, °C 1100
240
Melting Completion (Liquidus), °C 1460
1200
Melting Onset (Solidus), °C 1410
1150
Specific Heat Capacity, J/kg-K 460
400
Thermal Conductivity, W/m-K 13
43
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 33
37
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 6.2
4.3
Embodied Energy, MJ/kg 84
63
Embodied Water, L/kg 200
290

Common Calculations

Stiffness to Weight: Axial, points 14
8.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21
10 to 18
Strength to Weight: Bending, points 20
12 to 17
Thermal Diffusivity, mm2/s 3.4
12
Thermal Shock Resistance, points 14
12 to 20

Alloy Composition


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Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
73.5 to 80.5
Iron (Fe), % 41.4 to 50.3
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
19 to 23
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5