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S31727 Stainless Steel vs. EN 1.6771 Steel

Both S31727 stainless steel and EN 1.6771 steel are iron alloys. They have 63% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is EN 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
280 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
8.0 to 8.7
Fatigue Strength, MPa 240
440 to 680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 630
930 to 1180
Tensile Strength: Yield (Proof), MPa 270
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
440
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
5.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
1.9
Embodied Energy, MJ/kg 64
25
Embodied Water, L/kg 180
58

Common Calculations

PREN (Pitting Resistance) 35
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
33 to 41
Strength to Weight: Bending, points 20
27 to 31
Thermal Shock Resistance, points 14
27 to 35

Alloy Composition

Carbon (C), % 0 to 0.030
0.27 to 0.33
Chromium (Cr), % 17.5 to 19
0.8 to 1.2
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
92.2 to 95
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 3.8 to 4.5
0.3 to 0.6
Nickel (Ni), % 14.5 to 16.5
3.0 to 4.0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.020