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SAE-AISI 1140 Steel vs. EN 1.6982 Stainless Steel

Both SAE-AISI 1140 steel and EN 1.6982 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 1.6982 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 18
17
Fatigue Strength, MPa 230 to 370
350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 600 to 700
800
Tensile Strength: Yield (Proof), MPa 340 to 570
570

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
770
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.4
Embodied Energy, MJ/kg 18
33
Embodied Water, L/kg 46
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
120
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 25
28
Strength to Weight: Bending, points 20 to 22
25
Thermal Diffusivity, mm2/s 14
6.6
Thermal Shock Resistance, points 18 to 21
29

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.050
Chromium (Cr), % 0
12 to 13.5
Iron (Fe), % 98.4 to 98.9
78.7 to 84.5
Manganese (Mn), % 0.7 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 0
3.5 to 5.0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.080 to 0.13
0 to 0.015