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SAE-AISI 9310 Steel vs. S31727 Stainless Steel

Both SAE-AISI 9310 steel and S31727 stainless steel are iron alloys. They have 63% 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 9310 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540 to 610
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17 to 19
40
Fatigue Strength, MPa 300 to 390
240
Poisson's Ratio 0.29
0.28
Rockwell B Hardness 240 to 270
83
Shear Modulus, GPa 73
78
Shear Strength, MPa 510 to 570
430
Tensile Strength: Ultimate (UTS), MPa 820 to 910
630
Tensile Strength: Yield (Proof), MPa 450 to 570
270

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
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 4.4
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.8
4.7
Embodied Energy, MJ/kg 24
64
Embodied Water, L/kg 57
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 150
200
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 860
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 32
22
Strength to Weight: Bending, points 25 to 27
20
Thermal Shock Resistance, points 24 to 27
14

Alloy Composition

Carbon (C), % 0.080 to 0.13
0 to 0.030
Chromium (Cr), % 1.0 to 1.4
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 93.8 to 95.2
53.7 to 61.3
Manganese (Mn), % 0.45 to 0.65
0 to 1.0
Molybdenum (Mo), % 0.080 to 0.15
3.8 to 4.5
Nickel (Ni), % 3.0 to 3.5
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0.2 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.012
0 to 0.030