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AISI 409 Stainless Steel vs. SAE-AISI T6 Steel

Both AISI 409 stainless steel and SAE-AISI T6 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 (10, in this case) are not shown.

For each property being compared, the top bar is AISI 409 stainless steel and the bottom bar is SAE-AISI T6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
81
Tensile Strength: Ultimate (UTS), MPa 420
880 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1450
1830
Melting Onset (Solidus), °C 1400
1770
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 25
18
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
70
Density, g/cm3 7.7
9.5
Embodied Carbon, kg CO2/kg material 2.0
11
Embodied Energy, MJ/kg 28
170
Embodied Water, L/kg 94
160

Common Calculations

PREN (Pitting Resistance) 11
39
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 15
26 to 63
Strength to Weight: Bending, points 16
21 to 39
Thermal Diffusivity, mm2/s 6.7
4.7
Thermal Shock Resistance, points 15
26 to 64

Alloy Composition

Carbon (C), % 0 to 0.080
0.75 to 0.85
Chromium (Cr), % 10.5 to 11.7
4.0 to 4.8
Cobalt (Co), % 0
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 84.9 to 89.5
55.9 to 63.5
Manganese (Mn), % 0 to 1.0
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.75
0
Tungsten (W), % 0
18.5 to 21
Vanadium (V), % 0
1.5 to 2.1