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AISI 409 Stainless Steel vs. SAE-AISI P6 Steel

Both AISI 409 stainless steel and SAE-AISI P6 steel are iron alloys. They have 90% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 P6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 420
630 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
43
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
4.6
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.8
Embodied Energy, MJ/kg 28
24
Embodied Water, L/kg 94
59

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
22 to 68
Strength to Weight: Bending, points 16
21 to 44
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 15
21 to 63

Alloy Composition

Carbon (C), % 0 to 0.080
0.050 to 0.15
Chromium (Cr), % 10.5 to 11.7
1.3 to 1.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 84.9 to 89.5
92.9 to 95
Manganese (Mn), % 0 to 1.0
0.35 to 0.7
Nickel (Ni), % 0 to 0.5
3.3 to 3.8
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.75
0