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Nickel 908 vs. S38815 Stainless Steel

Nickel 908 belongs to the nickel alloys classification, while S38815 stainless steel belongs to the iron alloys. They have 60% of their average alloy composition in common. There are 27 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 908 and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 11
34
Fatigue Strength, MPa 450
230
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 70
74
Shear Strength, MPa 800
410
Tensile Strength: Ultimate (UTS), MPa 1340
610
Tensile Strength: Yield (Proof), MPa 930
290

Thermal Properties

Latent Heat of Fusion, J/g 290
370
Maximum Temperature: Mechanical, °C 920
860
Melting Completion (Liquidus), °C 1430
1360
Melting Onset (Solidus), °C 1380
1310
Specific Heat Capacity, J/kg-K 460
500
Thermal Expansion, µm/m-K 8.6
15

Otherwise Unclassified Properties

Base Metal Price, % relative 50
19
Density, g/cm3 8.3
7.5
Embodied Carbon, kg CO2/kg material 9.3
3.8
Embodied Energy, MJ/kg 140
54
Embodied Water, L/kg 170
140

Common Calculations

PREN (Pitting Resistance) 4.2
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
170
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
220
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 45
22
Strength to Weight: Bending, points 33
21
Thermal Shock Resistance, points 61
15

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0 to 0.3
Boron (B), % 0 to 0.012
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
13 to 15
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0.75 to 1.5
Iron (Fe), % 35.6 to 44.6
56.1 to 67
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 47 to 51
13 to 17
Niobium (Nb), % 2.7 to 3.3
0
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 0.0050
0 to 0.020
Titanium (Ti), % 1.2 to 1.8
0