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EN 1.4125 Stainless Steel vs. S35115 Stainless Steel

Both EN 1.4125 stainless steel and S35115 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 70% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4125 stainless steel and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19
46
Fatigue Strength, MPa 300
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 500
470
Tensile Strength: Ultimate (UTS), MPa 800
670
Tensile Strength: Yield (Proof), MPa 470
310

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.3
4.8
Embodied Energy, MJ/kg 32
67
Embodied Water, L/kg 120
190

Common Calculations

PREN (Pitting Resistance) 19
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
250
Resilience: Unit (Modulus of Resilience), kJ/m3 570
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 4.1
3.9
Thermal Shock Resistance, points 29
15

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.030
Chromium (Cr), % 16 to 18
23 to 25
Iron (Fe), % 78 to 82.7
47.6 to 55.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 0.8
1.5 to 2.5
Nickel (Ni), % 0
19 to 22
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015