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SAE-AISI 5140 Steel vs. Nickel 690

SAE-AISI 5140 steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys.

For each property being compared, the top bar is SAE-AISI 5140 steel and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
90
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 29
3.4 to 34
Fatigue Strength, MPa 220 to 570
180 to 300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Shear Strength, MPa 360 to 600
420 to 570
Tensile Strength: Ultimate (UTS), MPa 560 to 970
640 to 990
Tensile Strength: Yield (Proof), MPa 290 to 840
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
1010
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
14
Thermal Expansion, µm/m-K 13
14

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
50
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 19
120
Embodied Water, L/kg 49
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 34
21 to 33
Strength to Weight: Bending, points 19 to 28
20 to 27
Thermal Diffusivity, mm2/s 12
3.5
Thermal Shock Resistance, points 16 to 29
16 to 25

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.050
Chromium (Cr), % 0.7 to 0.9
27 to 31
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 97.3 to 98.1
7.0 to 11
Manganese (Mn), % 0.7 to 0.9
0 to 0.5
Nickel (Ni), % 0
58 to 66
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.015

Comparable Variants