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ACI-ASTM CN3MN Steel vs. C72700 Copper-nickel

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN3MN steel and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 39
4.0 to 36
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 80
44
Tensile Strength: Ultimate (UTS), MPa 620
460 to 1070
Tensile Strength: Yield (Proof), MPa 300
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Maximum Temperature: Mechanical, °C 1100
200
Melting Completion (Liquidus), °C 1460
1100
Melting Onset (Solidus), °C 1410
930
Specific Heat Capacity, J/kg-K 460
380
Thermal Conductivity, W/m-K 13
54
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
11

Otherwise Unclassified Properties

Base Metal Price, % relative 33
36
Density, g/cm3 8.1
8.8
Embodied Carbon, kg CO2/kg material 6.2
4.0
Embodied Energy, MJ/kg 84
62
Embodied Water, L/kg 200
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1420 to 4770
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21
14 to 34
Strength to Weight: Bending, points 20
15 to 26
Thermal Diffusivity, mm2/s 3.4
16
Thermal Shock Resistance, points 14
16 to 38

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
82.1 to 86
Iron (Fe), % 41.4 to 50.3
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0 to 2.0
0.050 to 0.3
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
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
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3