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AISI 409 Stainless Steel vs. EN 1.6771 Steel

Both AISI 409 stainless steel and EN 1.6771 steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
8.0 to 8.7
Fatigue Strength, MPa 140
440 to 680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 420
930 to 1180
Tensile Strength: Yield (Proof), MPa 200
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
440
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
46
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
5.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.9
Embodied Energy, MJ/kg 28
25
Embodied Water, L/kg 94
58

Common Calculations

PREN (Pitting Resistance) 11
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 100
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
33 to 41
Strength to Weight: Bending, points 16
27 to 31
Thermal Diffusivity, mm2/s 6.7
13
Thermal Shock Resistance, points 15
27 to 35

Alloy Composition

Carbon (C), % 0 to 0.080
0.27 to 0.33
Chromium (Cr), % 10.5 to 11.7
0.8 to 1.2
Iron (Fe), % 84.9 to 89.5
92.2 to 95
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.5
3.0 to 4.0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0 to 0.75
0