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EN 1.4578 Stainless Steel vs. S31727 Stainless Steel

Both EN 1.4578 stainless steel and S31727 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4578 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
40
Fatigue Strength, MPa 200
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 400
430
Tensile Strength: Ultimate (UTS), MPa 550
630
Tensile Strength: Yield (Proof), MPa 200
270

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 930
1010
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 19
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.7
4.7
Embodied Energy, MJ/kg 51
64
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 25
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
200
Resilience: Unit (Modulus of Resilience), kJ/m3 100
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
20
Thermal Shock Resistance, points 12
14

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 16.5 to 17.5
17.5 to 19
Copper (Cu), % 3.0 to 3.5
2.8 to 4.0
Iron (Fe), % 62.3 to 68.5
53.7 to 61.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 2.5
3.8 to 4.5
Nickel (Ni), % 10 to 11
14.5 to 16.5
Nitrogen (N), % 0 to 0.1
0.15 to 0.21
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030