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SAE-AISI T6 Steel vs. S44660 Stainless Steel

Both SAE-AISI T6 steel and S44660 stainless steel are iron alloys. They have 66% 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 S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
81
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
660

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1830
1460
Melting Onset (Solidus), °C 1770
1410
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
21
Density, g/cm3 9.5
7.7
Embodied Carbon, kg CO2/kg material 11
4.3
Embodied Energy, MJ/kg 170
61
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 39
38
Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
24
Strength to Weight: Bending, points 21 to 39
22
Thermal Diffusivity, mm2/s 4.7
4.5
Thermal Shock Resistance, points 26 to 64
21

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 4.0 to 4.8
25 to 28
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
60.4 to 71
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
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 0.030
Titanium (Ti), % 0
0.2 to 1.0
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0