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EN 1.7710 Steel vs. S31727 Stainless Steel

Both EN 1.7710 steel and S31727 stainless steel are iron alloys. They have 61% 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 EN 1.7710 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 320
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.8 to 11
40
Fatigue Strength, MPa 500 to 620
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 930 to 1070
630
Tensile Strength: Yield (Proof), MPa 800 to 1060
270

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 440
1010
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.2
4.7
Embodied Energy, MJ/kg 30
64
Embodied Water, L/kg 57
180

Common Calculations

PREN (Pitting Resistance) 4.5
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 100
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1680 to 2970
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33 to 38
22
Strength to Weight: Bending, points 27 to 30
20
Thermal Shock Resistance, points 27 to 31
14

Alloy Composition

Carbon (C), % 0.12 to 0.18
0 to 0.030
Chromium (Cr), % 1.3 to 1.8
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 95.1 to 97
53.7 to 61.3
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.15 to 0.25
0