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SAE-AISI 8645 Steel vs. Nickel 59

SAE-AISI 8645 steel belongs to the iron alloys classification, while nickel 59 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8645 steel and the bottom bar is nickel 59.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 12 to 23
50
Fatigue Strength, MPa 280 to 350
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
84
Shear Strength, MPa 380 to 400
560
Tensile Strength: Ultimate (UTS), MPa 600 to 670
780
Tensile Strength: Yield (Proof), MPa 390 to 560
350

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 39
10
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
65
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
12
Embodied Energy, MJ/kg 20
160
Embodied Water, L/kg 50
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
320
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 21 to 24
25
Strength to Weight: Bending, points 20 to 22
22
Thermal Diffusivity, mm2/s 10
2.7
Thermal Shock Resistance, points 18 to 20
15

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.4
Carbon (C), % 0.43 to 0.48
0 to 0.010
Chromium (Cr), % 0.4 to 0.6
22 to 24
Cobalt (Co), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.5 to 97.7
0 to 1.5
Manganese (Mn), % 0.75 to 1.0
0 to 0.5
Molybdenum (Mo), % 0.15 to 0.25
15 to 16.5
Nickel (Ni), % 0.4 to 0.7
56.2 to 62.9
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.010