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SAE-AISI 8740 Steel vs. N10624 Nickel

SAE-AISI 8740 steel belongs to the iron alloys classification, while N10624 nickel belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8740 steel and the bottom bar is N10624 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 11 to 23
45
Fatigue Strength, MPa 270 to 350
310
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
84
Shear Strength, MPa 370 to 400
570
Tensile Strength: Ultimate (UTS), MPa 580 to 670
810
Tensile Strength: Yield (Proof), MPa 380 to 570
360

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 410
930
Melting Completion (Liquidus), °C 1460
1580
Melting Onset (Solidus), °C 1420
1520
Specific Heat Capacity, J/kg-K 470
410
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
70
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 1.5
13
Embodied Energy, MJ/kg 20
170
Embodied Water, L/kg 50
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
300
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 850
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 20 to 24
25
Strength to Weight: Bending, points 20 to 22
22
Thermal Shock Resistance, points 17 to 20
24

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Carbon (C), % 0.38 to 0.43
0 to 0.010
Chromium (Cr), % 0.4 to 0.6
6.0 to 10
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.5 to 97.7
5.0 to 8.0
Manganese (Mn), % 0.75 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
21 to 25
Nickel (Ni), % 0.4 to 0.7
53.9 to 68
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.010