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EN 1.4588 Stainless Steel vs. Grade N7M Nickel

EN 1.4588 stainless steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. They have a modest 35% 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 1.4588 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, % 34
22
Fatigue Strength, MPa 190
190
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 80
85
Tensile Strength: Ultimate (UTS), MPa 540
590
Tensile Strength: Yield (Proof), MPa 240
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1450
1650
Melting Onset (Solidus), °C 1410
1590
Specific Heat Capacity, J/kg-K 460
390
Thermal Expansion, µm/m-K 17
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
75
Density, g/cm3 8.1
9.3
Embodied Carbon, kg CO2/kg material 6.2
16
Embodied Energy, MJ/kg 84
200
Embodied Water, L/kg 200
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
17
Thermal Shock Resistance, points 11
19

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.070
Chromium (Cr), % 19 to 21
0 to 1.0
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 41.2 to 50.4
0 to 3.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
30 to 33
Nickel (Ni), % 24 to 26
60.9 to 70
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030