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ACI-ASTM CG8M Steel vs. Grade N12MV Nickel

ACI-ASTM CG8M steel belongs to the iron alloys classification, while grade N12MV nickel belongs to the nickel alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG8M steel and the bottom bar is grade N12MV nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 45
6.8
Fatigue Strength, MPa 280
130
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 79
84
Tensile Strength: Ultimate (UTS), MPa 550
600
Tensile Strength: Yield (Proof), MPa 300
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1020
900
Melting Completion (Liquidus), °C 1450
1620
Melting Onset (Solidus), °C 1400
1570
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 20
75
Density, g/cm3 7.9
9.2
Embodied Carbon, kg CO2/kg material 4.1
16
Embodied Energy, MJ/kg 56
200
Embodied Water, L/kg 160
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
34
Resilience: Unit (Modulus of Resilience), kJ/m3 220
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
17
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.12
Chromium (Cr), % 18 to 21
0 to 1.0
Iron (Fe), % 58.8 to 70
4.0 to 6.0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
26 to 30
Nickel (Ni), % 9.0 to 13
60.2 to 69.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.2 to 0.6