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EN 1.8151 Steel vs. S20431 Stainless Steel

Both EN 1.8151 steel and S20431 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 25 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 S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 540
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
710

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 410
890
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 50
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.8

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
2.5
Embodied Energy, MJ/kg 25
36
Embodied Water, L/kg 49
140

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 70
25
Strength to Weight: Bending, points 22 to 45
23
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 20 to 58
15

Alloy Composition

Carbon (C), % 0.4 to 0.5
0 to 0.12
Chromium (Cr), % 0.4 to 0.8
17 to 18
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 95.9 to 97.2
66.1 to 74.4
Manganese (Mn), % 0.6 to 0.9
5.0 to 7.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
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
Vanadium (V), % 0.1 to 0.2
0