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EN 1.3975 Stainless Steel vs. Nickel 725

EN 1.3975 stainless steel belongs to the iron alloys classification, while nickel 725 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 (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3975 stainless steel and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
34
Fatigue Strength, MPa 230
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 660
860
Tensile Strength: Yield (Proof), MPa 320
350

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 910
980
Melting Completion (Liquidus), °C 1360
1340
Melting Onset (Solidus), °C 1320
1270
Specific Heat Capacity, J/kg-K 500
440
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
75
Density, g/cm3 7.5
8.5
Embodied Carbon, kg CO2/kg material 3.3
13
Embodied Energy, MJ/kg 47
190
Embodied Water, L/kg 150
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
240
Resilience: Unit (Modulus of Resilience), kJ/m3 270
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 24
28
Strength to Weight: Bending, points 22
24
Thermal Shock Resistance, points 15
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 16 to 18
19 to 22.5
Iron (Fe), % 58.2 to 65.4
2.3 to 15.3
Manganese (Mn), % 7.0 to 9.0
0 to 0.35
Molybdenum (Mo), % 0 to 1.0
7.0 to 9.5
Nickel (Ni), % 8.0 to 9.0
55 to 59
Niobium (Nb), % 0
2.8 to 4.0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 3.5 to 4.5
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.7