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AISI 409 Stainless Steel vs. EN 1.4439 Stainless Steel

Both AISI 409 stainless steel and EN 1.4439 stainless steel are iron alloys. They have 75% 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 EN 1.4439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 24
40
Fatigue Strength, MPa 140
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
79
Shear Strength, MPa 270
470
Tensile Strength: Ultimate (UTS), MPa 420
680
Tensile Strength: Yield (Proof), MPa 200
310

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 710
980
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
14
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
22
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.5
Embodied Energy, MJ/kg 28
61
Embodied Water, L/kg 94
160

Common Calculations

PREN (Pitting Resistance) 11
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
220
Resilience: Unit (Modulus of Resilience), kJ/m3 100
240
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
3.8
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 10.5 to 11.7
16.5 to 18.5
Iron (Fe), % 84.9 to 89.5
58.7 to 66.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0 to 0.5
12.5 to 14.5
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0 to 0.75
0