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ASTM A372 Grade M Steel vs. C71580 Copper-nickel

ASTM A372 grade M steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade M steel and the bottom bar is C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
75
Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 18 to 21
40
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
51
Shear Strength, MPa 510 to 570
230
Tensile Strength: Ultimate (UTS), MPa 810 to 910
330
Tensile Strength: Yield (Proof), MPa 660 to 770
110

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Maximum Temperature: Mechanical, °C 450
260
Melting Completion (Liquidus), °C 1460
1180
Melting Onset (Solidus), °C 1420
1120
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 46
39
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
41
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 2.0
5.1
Embodied Energy, MJ/kg 27
74
Embodied Water, L/kg 61
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1580
47
Stiffness to Weight: Axial, points 13
8.5
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 29 to 32
10
Strength to Weight: Bending, points 24 to 27
12
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 24 to 27
11

Alloy Composition

Carbon (C), % 0 to 0.23
0 to 0.070
Chromium (Cr), % 1.5 to 2.0
0
Copper (Cu), % 0
65.5 to 71
Iron (Fe), % 92.5 to 95.1
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.2 to 0.4
0 to 0.3
Molybdenum (Mo), % 0.4 to 0.6
0
Nickel (Ni), % 2.8 to 3.9
29 to 33
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0 to 0.010
0
Vanadium (V), % 0 to 0.080
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5