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EN 1.8505 Steel vs. S31727 Stainless Steel

Both EN 1.8505 steel and S31727 stainless 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 EN 1.8505 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
40
Fatigue Strength, MPa 540
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 630
430
Tensile Strength: Ultimate (UTS), MPa 1050
630
Tensile Strength: Yield (Proof), MPa 860
270

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
1010
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.6
4.7
Embodied Energy, MJ/kg 22
64
Embodied Water, L/kg 65
180

Common Calculations

PREN (Pitting Resistance) 2.6
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1950
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 37
22
Strength to Weight: Bending, points 30
20
Thermal Shock Resistance, points 31
14

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.28 to 0.35
0 to 0.030
Chromium (Cr), % 1.5 to 1.8
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 95.4 to 97.1
53.7 to 61.3
Manganese (Mn), % 0.4 to 0.7
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.4
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 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.030