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EN 1.3555 Steel vs. S31727 Stainless Steel

Both EN 1.3555 steel and S31727 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 70% of their average alloy composition in common. There are 22 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 1.3555 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 770
630

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 540
1010
Melting Completion (Liquidus), °C 1500
1440
Melting Onset (Solidus), °C 1450
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 5.6
4.7
Embodied Energy, MJ/kg 81
64
Embodied Water, L/kg 90
180

Common Calculations

PREN (Pitting Resistance) 18
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 23
20
Thermal Shock Resistance, points 22
14

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.030
Chromium (Cr), % 3.9 to 4.3
17.5 to 19
Copper (Cu), % 0 to 0.1
2.8 to 4.0
Iron (Fe), % 85.4 to 87.7
53.7 to 61.3
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
3.8 to 4.5
Nickel (Ni), % 3.2 to 3.6
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.015
0 to 0.030
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