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S31727 Stainless Steel vs. EN 1.6311 Steel

Both S31727 stainless steel and EN 1.6311 steel are iron alloys. They have 60% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is EN 1.6311 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
19
Fatigue Strength, MPa 240
340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 430
400
Tensile Strength: Ultimate (UTS), MPa 630
650
Tensile Strength: Yield (Proof), MPa 270
490

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
2.9
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
1.6
Embodied Energy, MJ/kg 64
22
Embodied Water, L/kg 180
51

Common Calculations

PREN (Pitting Resistance) 35
2.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
23
Strength to Weight: Bending, points 20
21
Thermal Shock Resistance, points 14
19

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.23
Chromium (Cr), % 17.5 to 19
0 to 0.5
Copper (Cu), % 2.8 to 4.0
0 to 0.2
Iron (Fe), % 53.7 to 61.3
95.9 to 98
Manganese (Mn), % 0 to 1.0
1.0 to 1.5
Molybdenum (Mo), % 3.8 to 4.5
0.45 to 0.6
Nickel (Ni), % 14.5 to 16.5
0.4 to 0.8
Nitrogen (N), % 0.15 to 0.21
0 to 0.012
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0
0 to 0.020