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SAE-AISI 8645 Steel vs. N07773 Nickel

SAE-AISI 8645 steel belongs to the iron alloys classification, while N07773 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 8645 steel and the bottom bar is N07773 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 23
40
Fatigue Strength, MPa 280 to 350
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
77
Shear Strength, MPa 380 to 400
480
Tensile Strength: Ultimate (UTS), MPa 600 to 670
710
Tensile Strength: Yield (Proof), MPa 390 to 560
270

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1460
1510
Melting Onset (Solidus), °C 1420
1460
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
75
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.5
13
Embodied Energy, MJ/kg 20
180
Embodied Water, L/kg 50
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
220
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 21 to 24
23
Strength to Weight: Bending, points 20 to 22
21
Thermal Shock Resistance, points 18 to 20
20

Alloy Composition

Aluminum (Al), % 0
0 to 2.0
Carbon (C), % 0.43 to 0.48
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
18 to 27
Iron (Fe), % 96.5 to 97.7
0 to 32
Manganese (Mn), % 0.75 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
2.5 to 5.5
Nickel (Ni), % 0.4 to 0.7
45 to 60
Niobium (Nb), % 0
2.5 to 6.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0 to 2.0
Tungsten (W), % 0
0 to 6.0