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Nickel 689 vs. S38815 Stainless Steel

Nickel 689 belongs to the nickel alloys classification, while S38815 stainless steel belongs to the iron alloys. They have a modest 33% 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 (3, in this case) are not shown.

For each property being compared, the top bar is nickel 689 and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
190
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
34
Fatigue Strength, MPa 420
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
74
Shear Strength, MPa 790
410
Tensile Strength: Ultimate (UTS), MPa 1250
610
Tensile Strength: Yield (Proof), MPa 690
290

Thermal Properties

Latent Heat of Fusion, J/g 330
370
Maximum Temperature: Mechanical, °C 990
860
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1390
1310
Specific Heat Capacity, J/kg-K 450
500
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
19
Density, g/cm3 8.5
7.5
Embodied Carbon, kg CO2/kg material 11
3.8
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 330
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 41
22
Strength to Weight: Bending, points 30
21
Thermal Shock Resistance, points 35
15

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0 to 0.3
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.030
Chromium (Cr), % 18 to 20
13 to 15
Cobalt (Co), % 9.0 to 11
0
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 0 to 5.0
56.1 to 67
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 9.0 to 10.5
0.75 to 1.5
Nickel (Ni), % 48.3 to 60.9
13 to 17
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
5.5 to 6.5
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 2.3 to 2.8
0