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SAE-AISI 8640 Steel vs. N07716 Nickel

SAE-AISI 8640 steel belongs to the iron alloys classification, while N07716 nickel belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8640 steel and the bottom bar is N07716 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 270
690
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
78
Shear Strength, MPa 360
580
Tensile Strength: Ultimate (UTS), MPa 570
860
Tensile Strength: Yield (Proof), MPa 380
350

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 410
980
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 39
11
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.5

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
190
Embodied Water, L/kg 50
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 380
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20
28
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 10
2.8
Thermal Shock Resistance, points 17
24

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0.38 to 0.43
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
19 to 22
Iron (Fe), % 96.6 to 97.8
0 to 11.3
Manganese (Mn), % 0.75 to 1.0
0 to 0.2
Molybdenum (Mo), % 0.15 to 0.25
7.0 to 9.5
Nickel (Ni), % 0.4 to 0.7
59 to 63
Niobium (Nb), % 0
2.8 to 4.0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0.15 to 0.35
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.6