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Nickel 625 vs. S31260 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while S31260 stainless steel belongs to the iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is S31260 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
23
Fatigue Strength, MPa 240 to 320
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 79
80
Shear Strength, MPa 530 to 600
500
Tensile Strength: Ultimate (UTS), MPa 790 to 910
790
Tensile Strength: Yield (Proof), MPa 320 to 450
540

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1350
1450
Melting Onset (Solidus), °C 1290
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 80
20
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
3.9
Embodied Energy, MJ/kg 190
53
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
160
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
720
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
28
Strength to Weight: Bending, points 22 to 24
24
Thermal Diffusivity, mm2/s 2.9
4.3
Thermal Shock Resistance, points 22 to 25
22

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 20 to 23
24 to 26
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 0 to 5.0
59.6 to 67.6
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 8.0 to 10
2.5 to 3.5
Nickel (Ni), % 58 to 68.9
5.5 to 7.5
Niobium (Nb), % 3.2 to 4.2
0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0
Tungsten (W), % 0
0.1 to 0.5