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EN 1.8151 Steel vs. AISI 409 Stainless Steel

Both EN 1.8151 steel and AISI 409 stainless 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 (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.8151 steel and the bottom bar is AISI 409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
420

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 410
710
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 50
25
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
6.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.8
2.0
Embodied Energy, MJ/kg 25
28
Embodied Water, L/kg 49
94

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 70
15
Strength to Weight: Bending, points 22 to 45
16
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 20 to 58
15

Alloy Composition

Carbon (C), % 0.4 to 0.5
0 to 0.080
Chromium (Cr), % 0.4 to 0.8
10.5 to 11.7
Iron (Fe), % 95.9 to 97.2
84.9 to 89.5
Manganese (Mn), % 0.6 to 0.9
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 1.3 to 1.7
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
0 to 0.75
Vanadium (V), % 0.1 to 0.2
0