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ACI-ASTM CN7M Steel vs. CC382H Copper-nickel

ACI-ASTM CN7M steel belongs to the iron alloys classification, while CC382H copper-nickel belongs to the copper alloys. They have a modest 36% 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 (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7M steel and the bottom bar is CC382H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
130
Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 44
20
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
53
Tensile Strength: Ultimate (UTS), MPa 480
490
Tensile Strength: Yield (Proof), MPa 200
290

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1410
1180
Melting Onset (Solidus), °C 1450
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 21
30
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
5.6

Otherwise Unclassified Properties

Base Metal Price, % relative 32
41
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 5.6
5.2
Embodied Energy, MJ/kg 78
76
Embodied Water, L/kg 210
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
85
Resilience: Unit (Modulus of Resilience), kJ/m3 110
290
Stiffness to Weight: Axial, points 14
8.8
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 5.6
8.2
Thermal Shock Resistance, points 12
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Bismuth (Bi), % 0
0 to 0.0020
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 19 to 22
1.5 to 2.0
Copper (Cu), % 3.0 to 4.0
62.8 to 68.4
Iron (Fe), % 37.4 to 48.5
0.5 to 1.0
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 0 to 1.5
0.5 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
29 to 32
Phosphorus (P), % 0 to 0.040
0 to 0.010
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.5
0.15 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Tellurium (Te), % 0
0 to 0.0050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0 to 0.15