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AISI 409 Stainless Steel vs. S32304 Stainless Steel

Both AISI 409 stainless steel and S32304 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 409 stainless steel and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 24
28
Fatigue Strength, MPa 140
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 75
79
Shear Strength, MPa 270
440
Tensile Strength: Ultimate (UTS), MPa 420
670
Tensile Strength: Yield (Proof), MPa 200
460

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 710
1050
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
14
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.8
Embodied Energy, MJ/kg 28
40
Embodied Water, L/kg 94
160

Common Calculations

PREN (Pitting Resistance) 11
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
170
Resilience: Unit (Modulus of Resilience), kJ/m3 100
520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 15
24
Strength to Weight: Bending, points 16
22
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 15
18

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 10.5 to 11.7
21.5 to 24.5
Copper (Cu), % 0
0.050 to 0.6
Iron (Fe), % 84.9 to 89.5
65 to 75.4
Manganese (Mn), % 0 to 1.0
0 to 2.5
Molybdenum (Mo), % 0
0.050 to 0.6
Nickel (Ni), % 0 to 0.5
3.0 to 5.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.75
0