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EN 1.4028 Stainless Steel vs. S31254 Stainless Steel

Both EN 1.4028 stainless steel and S31254 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4028 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
40
Fatigue Strength, MPa 230 to 400
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Shear Strength, MPa 410 to 550
490
Tensile Strength: Ultimate (UTS), MPa 660 to 930
720
Tensile Strength: Yield (Proof), MPa 390 to 730
330

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 760
1090
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 30
14
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
28
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 1.9
5.5
Embodied Energy, MJ/kg 27
74
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 13
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
240
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 33
25
Strength to Weight: Bending, points 22 to 27
22
Thermal Diffusivity, mm2/s 8.1
3.8
Thermal Shock Resistance, points 23 to 32
15

Alloy Composition

Carbon (C), % 0.26 to 0.35
0 to 0.020
Chromium (Cr), % 12 to 14
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 83.1 to 87.7
51.4 to 56.3
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.010