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S31727 Stainless Steel vs. EN 1.3555 Steel

Both S31727 stainless steel and EN 1.3555 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 S31727 stainless steel and the bottom bar is EN 1.3555 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 0 to 0.030
0.1 to 0.15
Chromium (Cr), % 17.5 to 19
3.9 to 4.3
Copper (Cu), % 2.8 to 4.0
0 to 0.1
Iron (Fe), % 53.7 to 61.3
85.4 to 87.7
Manganese (Mn), % 0 to 1.0
0.15 to 0.35
Molybdenum (Mo), % 3.8 to 4.5
4.0 to 4.5
Nickel (Ni), % 14.5 to 16.5
3.2 to 3.6
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 1.0
0.1 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
1.0 to 1.3