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Grade N7M Nickel vs. S30601 Stainless Steel

Grade N7M nickel belongs to the nickel alloys classification, while S30601 stainless steel belongs to the iron 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 (5, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is S30601 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 22
37
Fatigue Strength, MPa 190
250
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 85
75
Tensile Strength: Ultimate (UTS), MPa 590
660
Tensile Strength: Yield (Proof), MPa 310
300

Thermal Properties

Latent Heat of Fusion, J/g 320
370
Maximum Temperature: Mechanical, °C 900
950
Melting Completion (Liquidus), °C 1650
1360
Melting Onset (Solidus), °C 1590
1310
Specific Heat Capacity, J/kg-K 390
500
Thermal Expansion, µm/m-K 9.9
15

Otherwise Unclassified Properties

Base Metal Price, % relative 75
20
Density, g/cm3 9.3
7.6
Embodied Carbon, kg CO2/kg material 16
3.9
Embodied Energy, MJ/kg 200
55
Embodied Water, L/kg 270
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
200
Resilience: Unit (Modulus of Resilience), kJ/m3 220
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 17
22
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.015
Chromium (Cr), % 0 to 1.0
17 to 18
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 0 to 3.0
56.9 to 60.5
Manganese (Mn), % 0 to 1.0
0.5 to 0.8
Molybdenum (Mo), % 30 to 33
0 to 0.2
Nickel (Ni), % 60.9 to 70
17 to 18
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
5.0 to 5.6
Sulfur (S), % 0 to 0.030
0 to 0.013