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SAE-AISI 4140 Steel vs. S36200 Stainless Steel

Both SAE-AISI 4140 steel and S36200 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 30 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 4140 steel and the bottom bar is S36200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 26
3.4 to 4.6
Fatigue Strength, MPa 360 to 650
450 to 570
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 410 to 660
680 to 810
Tensile Strength: Ultimate (UTS), MPa 690 to 1080
1180 to 1410
Tensile Strength: Yield (Proof), MPa 590 to 990
960 to 1240

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 420
820
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 43
16
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 20
40
Embodied Water, L/kg 51
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 180
46 to 51
Resilience: Unit (Modulus of Resilience), kJ/m3 920 to 2590
2380 to 3930
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 38
42 to 50
Strength to Weight: Bending, points 22 to 30
32 to 36
Thermal Diffusivity, mm2/s 12
4.3
Thermal Shock Resistance, points 20 to 32
40 to 48

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.38 to 0.43
0 to 0.050
Chromium (Cr), % 0.8 to 1.1
14 to 14.5
Iron (Fe), % 96.8 to 97.8
75.4 to 79.5
Manganese (Mn), % 0.75 to 1.0
0 to 0.5
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.3
Nickel (Ni), % 0
6.5 to 7.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0.6 to 0.9

Comparable Variants