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AISI 409 Stainless Steel vs. EN 1.4594 Stainless Steel

Both AISI 409 stainless steel and EN 1.4594 stainless steel are iron alloys. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is AISI 409 stainless steel and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 24
11 to 17
Fatigue Strength, MPa 140
490 to 620
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 270
620 to 700
Tensile Strength: Ultimate (UTS), MPa 420
1020 to 1170
Tensile Strength: Yield (Proof), MPa 200
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 710
820
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 11
11

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
15
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
3.2
Embodied Energy, MJ/kg 28
45
Embodied Water, L/kg 94
130

Common Calculations

PREN (Pitting Resistance) 11
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 100
1660 to 3320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 15
36 to 41
Strength to Weight: Bending, points 16
29 to 31
Thermal Diffusivity, mm2/s 6.7
4.4
Thermal Shock Resistance, points 15
34 to 39

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 10.5 to 11.7
13 to 15
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 84.9 to 89.5
72.6 to 79.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 0 to 0.5
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0 to 0.75
0