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Nickel 625 vs. S31730 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while S31730 stainless steel belongs to the iron alloys. They have 40% of their average alloy composition in common. There are 26 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 nickel 625 and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
40
Fatigue Strength, MPa 240 to 320
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 530 to 600
370
Tensile Strength: Ultimate (UTS), MPa 790 to 910
540
Tensile Strength: Yield (Proof), MPa 320 to 450
200

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 980
990
Melting Completion (Liquidus), °C 1350
1430
Melting Onset (Solidus), °C 1290
1390
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 80
24
Density, g/cm3 8.6
8.0
Embodied Carbon, kg CO2/kg material 14
4.6
Embodied Energy, MJ/kg 190
63
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
170
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 29
19
Strength to Weight: Bending, points 22 to 24
18
Thermal Shock Resistance, points 22 to 25
12

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 20 to 23
17 to 19
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 0 to 5.0
52.4 to 61
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 8.0 to 10
3.0 to 4.0
Nickel (Ni), % 58 to 68.9
15 to 16.5
Niobium (Nb), % 3.2 to 4.2
0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0 to 0.4
0