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S31254 Stainless Steel vs. EN 1.4408 Stainless Steel

Both S31254 stainless steel and EN 1.4408 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is EN 1.4408 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34
Fatigue Strength, MPa 290
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 720
510
Tensile Strength: Yield (Proof), MPa 330
210

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
990
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 28
18
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
3.7
Embodied Energy, MJ/kg 74
52
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 44
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
140
Resilience: Unit (Modulus of Resilience), kJ/m3 270
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 3.8
3.9
Thermal Shock Resistance, points 15
11

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.070
Chromium (Cr), % 19.5 to 20.5
18 to 20
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
62.4 to 71
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 6.0 to 6.5
2.0 to 2.5
Nickel (Ni), % 17.5 to 18.5
9.0 to 12
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.030