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Grade M30C Nickel vs. ACI-ASTM CN7M Steel

Grade M30C nickel belongs to the nickel alloys classification, while ACI-ASTM CN7M steel belongs to the iron 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 grade M30C nickel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 29
44
Fatigue Strength, MPa 170
190
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
77
Tensile Strength: Ultimate (UTS), MPa 510
480
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1290
1410
Melting Onset (Solidus), °C 1240
1450
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 60
32
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 9.5
5.6
Embodied Energy, MJ/kg 140
78
Embodied Water, L/kg 250
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 200
110
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 16
17
Strength to Weight: Bending, points 16
17
Thermal Diffusivity, mm2/s 5.7
5.6
Thermal Shock Resistance, points 18
12

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.070
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 26 to 33
3.0 to 4.0
Iron (Fe), % 0 to 3.5
37.4 to 48.5
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 56.6 to 72
27.5 to 30.5
Niobium (Nb), % 1.0 to 3.0
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040