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EN 1.3555 Steel vs. AISI 431 Stainless Steel

Both EN 1.3555 steel and AISI 431 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 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 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 770
890 to 1380

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 540
850
Melting Completion (Liquidus), °C 1500
1510
Melting Onset (Solidus), °C 1450
1450
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.2
Embodied Energy, MJ/kg 81
31
Embodied Water, L/kg 90
120

Common Calculations

PREN (Pitting Resistance) 18
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
32 to 50
Strength to Weight: Bending, points 23
27 to 36
Thermal Shock Resistance, points 22
28 to 43

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.2
Chromium (Cr), % 3.9 to 4.3
15 to 17
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
78.2 to 83.8
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
0
Nickel (Ni), % 3.2 to 3.6
1.3 to 2.5
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.1 to 0.25
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0