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SAE-AISI 5140 Steel vs. EN 1.4931 Steel

Both SAE-AISI 5140 steel and EN 1.4931 steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 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 5140 steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 29
17
Fatigue Strength, MPa 220 to 570
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 560 to 970
810
Tensile Strength: Yield (Proof), MPa 290 to 840
620

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
600
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
24
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 49
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
130
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
29
Strength to Weight: Bending, points 19 to 28
25
Thermal Diffusivity, mm2/s 12
6.5
Thermal Shock Resistance, points 16 to 29
22

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.2 to 0.26
Chromium (Cr), % 0.7 to 0.9
11.3 to 12.2
Iron (Fe), % 97.3 to 98.1
83.2 to 86.8
Manganese (Mn), % 0.7 to 0.9
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35