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SAE-AISI 1132 Steel vs. S31727 Stainless Steel

Both SAE-AISI 1132 steel and S31727 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 28 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 1132 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 18
40
Fatigue Strength, MPa 240 to 380
240
Poisson's Ratio 0.29
0.28
Reduction in Area, % 39 to 46
56
Shear Modulus, GPa 73
78
Shear Strength, MPa 400 to 440
430
Tensile Strength: Ultimate (UTS), MPa 640 to 720
630
Tensile Strength: Yield (Proof), MPa 350 to 590
270

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1010
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
4.7
Embodied Energy, MJ/kg 19
64
Embodied Water, L/kg 48
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 97
200
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 940
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 25
22
Strength to Weight: Bending, points 21 to 23
20
Thermal Shock Resistance, points 19 to 22
14

Alloy Composition

Carbon (C), % 0.24 to 0.34
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 97.8 to 98.3
53.7 to 61.3
Manganese (Mn), % 1.4 to 1.7
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.080 to 0.13
0 to 0.030