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SAE-AISI 1140 Steel vs. EN 1.0031 Steel

Both SAE-AISI 1140 steel and EN 1.0031 steel are iron alloys. Their average alloy composition is basically identical. There are 31 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 1140 steel and the bottom bar is EN 1.0031 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
89
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 18
28
Fatigue Strength, MPa 230 to 370
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 370 to 420
200
Tensile Strength: Ultimate (UTS), MPa 600 to 700
310
Tensile Strength: Yield (Proof), MPa 340 to 570
210

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
78
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 25
11
Strength to Weight: Bending, points 20 to 22
13
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 18 to 21
9.8

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.1
Iron (Fe), % 98.4 to 98.9
98.8 to 100
Manganese (Mn), % 0.7 to 1.0
0 to 0.7
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 0.35
Sulfur (S), % 0.080 to 0.13
0 to 0.045