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Grade M30H Nickel vs. S44800 Stainless Steel

Grade M30H nickel belongs to the nickel alloys classification, while S44800 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade M30H nickel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
210
Elongation at Break, % 11
23
Fatigue Strength, MPa 230
300
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 61
82
Tensile Strength: Ultimate (UTS), MPa 770
590
Tensile Strength: Yield (Proof), MPa 470
450

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1250
1460
Melting Onset (Solidus), °C 1200
1410
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 22
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
19
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 7.7
3.8
Embodied Energy, MJ/kg 110
52
Embodied Water, L/kg 250
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75
120
Resilience: Unit (Modulus of Resilience), kJ/m3 700
480
Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 5.7
4.6
Thermal Shock Resistance, points 27
19

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 27 to 33
0 to 0.15
Iron (Fe), % 0 to 3.5
62.6 to 66.5
Manganese (Mn), % 0 to 1.5
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 57.9 to 70.3
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 2.7 to 3.7
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020