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Nickel 689 vs. S31100 Stainless Steel

Nickel 689 belongs to the nickel alloys classification, while S31100 stainless steel belongs to the iron alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 nickel 689 and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
270
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
4.5
Fatigue Strength, MPa 420
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 80
79
Shear Strength, MPa 790
580
Tensile Strength: Ultimate (UTS), MPa 1250
1000
Tensile Strength: Yield (Proof), MPa 690
710

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 990
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
16
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 11
3.1
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 330
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
40
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
1240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 41
36
Strength to Weight: Bending, points 30
29
Thermal Shock Resistance, points 35
28

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.060
Chromium (Cr), % 18 to 20
25 to 27
Cobalt (Co), % 9.0 to 11
0
Iron (Fe), % 0 to 5.0
63.6 to 69
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 9.0 to 10.5
0
Nickel (Ni), % 48.3 to 60.9
6.0 to 7.0
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.3 to 2.8
0 to 0.25