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Grade M30H Nickel vs. S31730 Stainless Steel

Grade M30H nickel belongs to the nickel alloys classification, while S31730 stainless steel belongs to the iron alloys. They have a modest 23% 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 (9, in this case) are not shown.

For each property being compared, the top bar is grade M30H nickel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 230
170
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
77
Tensile Strength: Ultimate (UTS), MPa 770
540
Tensile Strength: Yield (Proof), MPa 470
200

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 900
990
Melting Completion (Liquidus), °C 1250
1430
Melting Onset (Solidus), °C 1200
1390
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 50
24
Density, g/cm3 8.6
8.0
Embodied Carbon, kg CO2/kg material 7.7
4.6
Embodied Energy, MJ/kg 110
63
Embodied Water, L/kg 250
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75
170
Resilience: Unit (Modulus of Resilience), kJ/m3 700
99
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 25
19
Strength to Weight: Bending, points 22
18
Thermal Shock Resistance, points 27
12

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.030
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 27 to 33
4.0 to 5.0
Iron (Fe), % 0 to 3.5
52.4 to 61
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 57.9 to 70.3
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 2.7 to 3.7
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010