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SAE-AISI 8740 Steel vs. N06975 Nickel

SAE-AISI 8740 steel belongs to the iron alloys classification, while N06975 nickel belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8740 steel and the bottom bar is N06975 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 23
45
Fatigue Strength, MPa 270 to 350
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Shear Strength, MPa 370 to 400
470
Tensile Strength: Ultimate (UTS), MPa 580 to 670
660
Tensile Strength: Yield (Proof), MPa 380 to 570
250

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 410
1000
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
50
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.5
8.9
Embodied Energy, MJ/kg 20
120
Embodied Water, L/kg 50
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 850
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 24
22
Strength to Weight: Bending, points 20 to 22
20
Thermal Shock Resistance, points 17 to 20
18

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
23 to 26
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 96.5 to 97.7
10.2 to 23.6
Manganese (Mn), % 0.75 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
5.0 to 7.0
Nickel (Ni), % 0.4 to 0.7
47 to 52
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0.7 to 1.5