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SAE-AISI O6 Steel vs. AISI 317 Stainless Steel

Both SAE-AISI O6 steel and AISI 317 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O6 steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 71
79
Tensile Strength: Ultimate (UTS), MPa 670 to 2070
580 to 710

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 43
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.3
Embodied Energy, MJ/kg 21
59
Embodied Water, L/kg 47
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 74
20 to 25
Strength to Weight: Bending, points 22 to 47
20 to 22
Thermal Diffusivity, mm2/s 12
4.1
Thermal Shock Resistance, points 22 to 69
12 to 15

Alloy Composition

Carbon (C), % 1.3 to 1.6
0 to 0.080
Chromium (Cr), % 0 to 0.3
18 to 20
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 94.6 to 97.7
58 to 68
Manganese (Mn), % 0.3 to 1.1
0 to 2.0
Molybdenum (Mo), % 0.2 to 0.3
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
11 to 15
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.55 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030