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EN 1.4378 Stainless Steel vs. S31254 Stainless Steel

Both EN 1.4378 stainless steel and S31254 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 34
40
Fatigue Strength, MPa 340 to 550
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 510 to 680
490
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
720
Tensile Strength: Yield (Proof), MPa 430 to 970
330

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 910
1090
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 2.7
5.5
Embodied Energy, MJ/kg 39
74
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 23
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
240
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 41
25
Strength to Weight: Bending, points 24 to 31
22
Thermal Shock Resistance, points 16 to 23
15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 17 to 19
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 61.2 to 69
51.4 to 56.3
Manganese (Mn), % 11.5 to 14.5
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 2.3 to 3.7
17.5 to 18.5
Nitrogen (N), % 0.2 to 0.4
0.18 to 0.22
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.010