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AISI 409 Stainless Steel vs. Grade FDSiCr Steel

Both AISI 409 stainless steel and grade FDSiCr steel are iron alloys. They have 89% of their average alloy composition in common. There are 24 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 grade FDSiCr 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
80
Tensile Strength: Ultimate (UTS), MPa 420
1930

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 710
410
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
48
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
2.2
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 94
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 15
69
Strength to Weight: Bending, points 16
44
Thermal Diffusivity, mm2/s 6.7
13
Thermal Shock Resistance, points 15
58

Alloy Composition

Carbon (C), % 0 to 0.080
0.5 to 0.6
Chromium (Cr), % 10.5 to 11.7
0.5 to 0.8
Copper (Cu), % 0
0 to 0.12
Iron (Fe), % 84.9 to 89.5
96.5 to 97.8
Manganese (Mn), % 0 to 1.0
0.5 to 0.9
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0 to 0.75
0