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EN 1.7380 Steel vs. S31727 Stainless Steel

Both EN 1.7380 steel and S31727 stainless steel are iron alloys. They have 62% 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 1.7380 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 170
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19 to 20
40
Fatigue Strength, MPa 200 to 230
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Shear Strength, MPa 330 to 350
430
Tensile Strength: Ultimate (UTS), MPa 540 to 550
630
Tensile Strength: Yield (Proof), MPa 290 to 330
270

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 460
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 3.8
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.8
4.7
Embodied Energy, MJ/kg 23
64
Embodied Water, L/kg 59
180

Common Calculations

PREN (Pitting Resistance) 5.6
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 98
200
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 280
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 20
22
Strength to Weight: Bending, points 19
20
Thermal Shock Resistance, points 15 to 16
14

Alloy Composition

Carbon (C), % 0.080 to 0.14
0 to 0.030
Chromium (Cr), % 2.0 to 2.5
17.5 to 19
Copper (Cu), % 0 to 0.3
2.8 to 4.0
Iron (Fe), % 94.6 to 96.6
53.7 to 61.3
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0 to 0.012
0.15 to 0.21
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030