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EN 1.3558 Steel vs. AISI 431 Stainless Steel

Both EN 1.3558 steel and AISI 431 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3558 steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 770
890 to 1380

Thermal Properties

Latent Heat of Fusion, J/g 240
280
Maximum Temperature: Mechanical, °C 490
850
Melting Completion (Liquidus), °C 1810
1510
Melting Onset (Solidus), °C 1760
1450
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 12
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 45
9.0
Density, g/cm3 9.3
7.7
Embodied Carbon, kg CO2/kg material 8.4
2.2
Embodied Energy, MJ/kg 130
31
Embodied Water, L/kg 90
120

Common Calculations

PREN (Pitting Resistance) 35
16
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 23
32 to 50
Strength to Weight: Bending, points 20
27 to 36
Thermal Diffusivity, mm2/s 5.3
7.0
Thermal Shock Resistance, points 22
28 to 43

Alloy Composition

Carbon (C), % 0.7 to 0.8
0 to 0.2
Chromium (Cr), % 3.9 to 4.3
15 to 17
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 73.7 to 77.6
78.2 to 83.8
Manganese (Mn), % 0 to 0.4
0 to 1.0
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 0
1.3 to 2.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.0 to 1.3
0