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S20910 Stainless Steel vs. Grade N7M Nickel

S20910 stainless steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 14 to 39
22
Fatigue Strength, MPa 310 to 460
190
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 79
85
Tensile Strength: Ultimate (UTS), MPa 780 to 940
590
Tensile Strength: Yield (Proof), MPa 430 to 810
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1080
900
Melting Completion (Liquidus), °C 1420
1650
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 480
390
Thermal Expansion, µm/m-K 16
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 22
75
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 4.8
16
Embodied Energy, MJ/kg 68
200
Embodied Water, L/kg 180
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
110
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 28 to 33
18
Strength to Weight: Bending, points 24 to 27
17
Thermal Shock Resistance, points 17 to 21
19

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 20.5 to 23.5
0 to 1.0
Iron (Fe), % 52.1 to 62.1
0 to 3.0
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
30 to 33
Nickel (Ni), % 11.5 to 13.5
60.9 to 70
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0