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AISI 205 Stainless Steel vs. SAE-AISI 1140 Steel

Both AISI 205 stainless steel and SAE-AISI 1140 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 AISI 205 stainless steel and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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