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SAE-AISI T6 Steel vs. S31277 Stainless Steel

Both SAE-AISI T6 steel and S31277 stainless steel are iron alloys. They have 47% of their average alloy composition in common. There are 20 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 T6 steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
860

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1830
1460
Melting Onset (Solidus), °C 1770
1410
Specific Heat Capacity, J/kg-K 400
460
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
36
Density, g/cm3 9.5
8.1
Embodied Carbon, kg CO2/kg material 11
6.7
Embodied Energy, MJ/kg 170
90
Embodied Water, L/kg 160
220

Common Calculations

PREN (Pitting Resistance) 39
51
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 26 to 63
29
Strength to Weight: Bending, points 21 to 39
25
Thermal Shock Resistance, points 26 to 64
19

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.020
Chromium (Cr), % 4.0 to 4.8
20.5 to 23
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0.5 to 1.5
Iron (Fe), % 55.9 to 63.5
35.5 to 46.2
Manganese (Mn), % 0.2 to 0.4
0 to 3.0
Molybdenum (Mo), % 0.4 to 1.0
6.5 to 8.0
Nickel (Ni), % 0 to 0.3
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0