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EN 1.3555 Steel vs. S20431 Stainless Steel

Both EN 1.3555 steel and S20431 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 78% 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 S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 770
710

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 540
890
Melting Completion (Liquidus), °C 1500
1400
Melting Onset (Solidus), °C 1450
1360
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.5
Embodied Energy, MJ/kg 81
36
Embodied Water, L/kg 90
140

Common Calculations

PREN (Pitting Resistance) 18
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
25
Strength to Weight: Bending, points 23
23
Thermal Shock Resistance, points 22
15

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.12
Chromium (Cr), % 3.9 to 4.3
17 to 18
Copper (Cu), % 0 to 0.1
1.5 to 3.5
Iron (Fe), % 85.4 to 87.7
66.1 to 74.4
Manganese (Mn), % 0.15 to 0.35
5.0 to 7.0
Molybdenum (Mo), % 4.0 to 4.5
0
Nickel (Ni), % 3.2 to 3.6
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.015
0 to 0.045
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