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SAE-AISI 1140 Steel vs. S43037 Stainless Steel

Both SAE-AISI 1140 steel and S43037 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1140 steel and the bottom bar is S43037 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 18
25
Fatigue Strength, MPa 230 to 370
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 370 to 420
260
Tensile Strength: Ultimate (UTS), MPa 600 to 700
410
Tensile Strength: Yield (Proof), MPa 340 to 570
230

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
880
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
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.3
Embodied Energy, MJ/kg 18
32
Embodied Water, L/kg 46
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
88
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 25
15
Strength to Weight: Bending, points 20 to 22
16
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 18 to 21
14

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.030
Chromium (Cr), % 0
16 to 19
Iron (Fe), % 98.4 to 98.9
77.9 to 83.9
Manganese (Mn), % 0.7 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.080 to 0.13
0 to 0.030
Titanium (Ti), % 0
0.1 to 1.0