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EN 1.4864 Stainless Steel vs. Grade N7M Nickel

EN 1.4864 stainless steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. They have a modest 38% 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 (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4864 stainless steel and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 33
22
Fatigue Strength, MPa 200
190
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 75
85
Tensile Strength: Ultimate (UTS), MPa 650
590
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1390
1650
Melting Onset (Solidus), °C 1340
1590
Specific Heat Capacity, J/kg-K 480
390
Thermal Expansion, µm/m-K 14
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 30
75
Density, g/cm3 8.0
9.3
Embodied Carbon, kg CO2/kg material 5.3
16
Embodied Energy, MJ/kg 75
200
Embodied Water, L/kg 180
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 23
18
Strength to Weight: Bending, points 21
17
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.070
Chromium (Cr), % 15 to 17
0 to 1.0
Iron (Fe), % 41.7 to 51
0 to 3.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 33 to 37
60.9 to 70
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030