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EN 1.8151 Steel vs. AISI 446 Stainless Steel

Both EN 1.8151 steel and AISI 446 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (11, 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 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 540
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
570

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 410
1180
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 50
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.8
2.4
Embodied Energy, MJ/kg 25
35
Embodied Water, L/kg 49
150

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 24 to 70
21
Strength to Weight: Bending, points 22 to 45
20
Thermal Diffusivity, mm2/s 14
4.6
Thermal Shock Resistance, points 20 to 58
19

Alloy Composition

Carbon (C), % 0.4 to 0.5
0 to 0.2
Chromium (Cr), % 0.4 to 0.8
23 to 27
Iron (Fe), % 95.9 to 97.2
69.2 to 77
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 1.3 to 1.7
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0.1 to 0.2
0