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EN 1.4371 Stainless Steel vs. S31254 Stainless Steel

Both EN 1.4371 stainless steel and S31254 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45 to 51
40
Fatigue Strength, MPa 290 to 340
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 520 to 540
490
Tensile Strength: Ultimate (UTS), MPa 740 to 750
720
Tensile Strength: Yield (Proof), MPa 320 to 340
330

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 880
1090
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.6
5.5
Embodied Energy, MJ/kg 38
74
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 20
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
240
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
25
Strength to Weight: Bending, points 24
22
Thermal Diffusivity, mm2/s 4.0
3.8
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 16 to 17.5
19.5 to 20.5
Copper (Cu), % 0 to 1.0
0.5 to 1.0
Iron (Fe), % 66.7 to 74.4
51.4 to 56.3
Manganese (Mn), % 6.0 to 8.0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 3.5 to 5.5
17.5 to 18.5
Nitrogen (N), % 0.15 to 0.25
0.18 to 0.22
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.010