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Nickel 908 vs. SAE-AISI 4137 Steel

Nickel 908 belongs to the nickel alloys classification, while SAE-AISI 4137 steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 28 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 SAE-AISI 4137 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 11
23
Fatigue Strength, MPa 450
240
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 70
73
Shear Strength, MPa 800
350
Tensile Strength: Ultimate (UTS), MPa 1340
550
Tensile Strength: Yield (Proof), MPa 930
340

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 920
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 11
45
Thermal Expansion, µm/m-K 8.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 50
2.4
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 9.3
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 170
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
310
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 45
20
Strength to Weight: Bending, points 33
19
Thermal Diffusivity, mm2/s 2.9
12
Thermal Shock Resistance, points 61
18

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0 to 0.012
0
Carbon (C), % 0 to 0.030
0.35 to 0.4
Chromium (Cr), % 3.8 to 4.5
0.8 to 1.1
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 35.6 to 44.6
96.9 to 97.9
Manganese (Mn), % 0 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 47 to 51
0
Niobium (Nb), % 2.7 to 3.3
0
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.0050
0 to 0.040
Titanium (Ti), % 1.2 to 1.8
0