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EN 1.4558 Stainless Steel vs. S35125 Stainless Steel

Both EN 1.4558 stainless steel and S35125 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4558 stainless steel and the bottom bar is S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
39
Fatigue Strength, MPa 170
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 350
370
Tensile Strength: Ultimate (UTS), MPa 510
540
Tensile Strength: Yield (Proof), MPa 200
230

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 480
490
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 31
36
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 5.5
6.4
Embodied Energy, MJ/kg 77
89
Embodied Water, L/kg 200
210

Common Calculations

PREN (Pitting Resistance) 22
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
170
Resilience: Unit (Modulus of Resilience), kJ/m3 100
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.1
3.1
Thermal Shock Resistance, points 12
12

Alloy Composition

Aluminum (Al), % 0.15 to 0.45
0
Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 20 to 23
20 to 23
Iron (Fe), % 39.2 to 47.9
36.2 to 45.8
Manganese (Mn), % 0 to 1.0
1.0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 32 to 35
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.6
0