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SAE-AISI T6 Steel vs. S41425 Stainless Steel

Both SAE-AISI T6 steel and S41425 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 S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
920

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1830
1450
Melting Onset (Solidus), °C 1770
1410
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 18
16
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 9.5
7.9
Embodied Carbon, kg CO2/kg material 11
2.9
Embodied Energy, MJ/kg 170
40
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 39
21
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
33
Strength to Weight: Bending, points 21 to 39
27
Thermal Diffusivity, mm2/s 4.7
4.4
Thermal Shock Resistance, points 26 to 64
33

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.050
Chromium (Cr), % 4.0 to 4.8
12 to 15
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 55.9 to 63.5
74 to 81.9
Manganese (Mn), % 0.2 to 0.4
0.5 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
1.5 to 2.0
Nickel (Ni), % 0 to 0.3
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0050
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0