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EN 1.3551 Steel vs. S31277 Stainless Steel

Both EN 1.3551 steel and S31277 stainless steel are iron alloys. They have 50% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 720
860

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Mechanical, °C 530
1100
Melting Completion (Liquidus), °C 1490
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
36
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 4.9
6.7
Embodied Energy, MJ/kg 71
90
Embodied Water, L/kg 82
220

Common Calculations

PREN (Pitting Resistance) 18
51
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0.77 to 0.85
0 to 0.020
Chromium (Cr), % 3.9 to 4.3
20.5 to 23
Copper (Cu), % 0 to 0.3
0.5 to 1.5
Iron (Fe), % 88.8 to 91.1
35.5 to 46.2
Manganese (Mn), % 0.15 to 0.35
0 to 3.0
Molybdenum (Mo), % 4.0 to 4.5
6.5 to 8.0
Nickel (Ni), % 0
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0