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EN 1.4547 Stainless Steel vs. Grade N7M Nickel

EN 1.4547 stainless steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. They have a modest 27% 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 EN 1.4547 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, % 39
22
Fatigue Strength, MPa 290
190
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 80
85
Tensile Strength: Ultimate (UTS), MPa 750
590
Tensile Strength: Yield (Proof), MPa 340
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1090
900
Melting Completion (Liquidus), °C 1470
1650
Melting Onset (Solidus), °C 1420
1590
Specific Heat Capacity, J/kg-K 460
390
Thermal Expansion, µm/m-K 17
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 28
75
Density, g/cm3 8.0
9.3
Embodied Carbon, kg CO2/kg material 5.6
16
Embodied Energy, MJ/kg 75
200
Embodied Water, L/kg 190
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 290
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
17
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.070
Chromium (Cr), % 19.5 to 20.5
0 to 1.0
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51 to 56.3
0 to 3.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
30 to 33
Nickel (Ni), % 17.5 to 18.5
60.9 to 70
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030