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SAE-AISI 5140 Steel vs. Nickel 80A

SAE-AISI 5140 steel belongs to the iron alloys classification, while nickel 80A belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5140 steel and the bottom bar is nickel 80A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 29
22
Fatigue Strength, MPa 220 to 570
430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 360 to 600
660
Tensile Strength: Ultimate (UTS), MPa 560 to 970
1040
Tensile Strength: Yield (Proof), MPa 290 to 840
710

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
980
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
11
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
55
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.4
9.8
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 49
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
210
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
1300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20 to 34
35
Strength to Weight: Bending, points 19 to 28
27
Thermal Diffusivity, mm2/s 12
2.9
Thermal Shock Resistance, points 16 to 29
31

Alloy Composition

Aluminum (Al), % 0
0.5 to 1.8
Carbon (C), % 0.38 to 0.43
0 to 0.1
Chromium (Cr), % 0.7 to 0.9
18 to 21
Iron (Fe), % 97.3 to 98.1
0 to 3.0
Manganese (Mn), % 0.7 to 0.9
0 to 1.0
Nickel (Ni), % 0
69.4 to 79.7
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
1.8 to 2.7