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Nickel 690 vs. S31730 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while S31730 stainless steel belongs to the iron alloys. They have 44% of their average alloy composition in common. There are 27 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 nickel 690 and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 3.4 to 34
40
Fatigue Strength, MPa 180 to 300
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 420 to 570
370
Tensile Strength: Ultimate (UTS), MPa 640 to 990
540
Tensile Strength: Yield (Proof), MPa 250 to 760
200

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1010
990
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 50
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 8.2
4.6
Embodied Energy, MJ/kg 120
63
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
170
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 33
19
Strength to Weight: Bending, points 20 to 27
18
Thermal Shock Resistance, points 16 to 25
12

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 27 to 31
17 to 19
Copper (Cu), % 0 to 0.5
4.0 to 5.0
Iron (Fe), % 7.0 to 11
52.4 to 61
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 58 to 66
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010