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SAE-AISI T6 Steel vs. S40910 Stainless Steel

Both SAE-AISI T6 steel and S40910 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T6 steel and the bottom bar is S40910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
75
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
430

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1830
1450
Melting Onset (Solidus), °C 1770
1410
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 18
26
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
7.0
Density, g/cm3 9.5
7.8
Embodied Carbon, kg CO2/kg material 11
2.0
Embodied Energy, MJ/kg 170
28
Embodied Water, L/kg 160
94

Common Calculations

PREN (Pitting Resistance) 39
11
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
16
Strength to Weight: Bending, points 21 to 39
16
Thermal Diffusivity, mm2/s 4.7
6.9
Thermal Shock Resistance, points 26 to 64
16

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 4.0 to 4.8
10.5 to 11.7
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
85 to 89.5
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0
0 to 0.17
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0