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SAE-AISI 1140 Steel vs. AISI 205 Stainless Steel

Both SAE-AISI 1140 steel and AISI 205 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1140 steel and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
210 to 440
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 18
11 to 51
Fatigue Strength, MPa 230 to 370
410 to 640
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 370 to 420
560 to 850
Tensile Strength: Ultimate (UTS), MPa 600 to 700
800 to 1430
Tensile Strength: Yield (Proof), MPa 340 to 570
450 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
880
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
11
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 18
37
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
150 to 430
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
510 to 3060
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 21 to 25
29 to 52
Strength to Weight: Bending, points 20 to 22
25 to 37
Thermal Shock Resistance, points 18 to 21
16 to 29

Alloy Composition

Carbon (C), % 0.37 to 0.44
0.12 to 0.25
Chromium (Cr), % 0
16.5 to 18.5
Iron (Fe), % 98.4 to 98.9
62.6 to 68.1
Manganese (Mn), % 0.7 to 1.0
14 to 15.5
Nickel (Ni), % 0
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.080 to 0.13
0 to 0.030