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S31727 Stainless Steel vs. EN 1.3551 Steel

Both S31727 stainless steel and EN 1.3551 steel are iron alloys. They have 66% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is EN 1.3551 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220
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
720

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 1010
530
Melting Completion (Liquidus), °C 1440
1490
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
9.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
4.9
Embodied Energy, MJ/kg 64
71
Embodied Water, L/kg 180
82

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
26
Strength to Weight: Bending, points 20
23
Thermal Shock Resistance, points 14
21

Alloy Composition

Carbon (C), % 0 to 0.030
0.77 to 0.85
Chromium (Cr), % 17.5 to 19
3.9 to 4.3
Copper (Cu), % 2.8 to 4.0
0 to 0.3
Iron (Fe), % 53.7 to 61.3
88.8 to 91.1
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
0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
0 to 0.25
Vanadium (V), % 0
0.9 to 1.1