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S33550 Stainless Steel vs. EN 1.4434 Stainless Steel

Both S33550 stainless steel and EN 1.4434 stainless steel are iron alloys. They have 85% 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 S33550 stainless steel and the bottom bar is EN 1.4434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
41
Fatigue Strength, MPa 270
270
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
79
Shear Strength, MPa 470
450
Tensile Strength: Ultimate (UTS), MPa 680
660
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
420
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 24
21
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.3
4.2
Embodied Energy, MJ/kg 61
57
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 30
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
220
Resilience: Unit (Modulus of Resilience), kJ/m3 250
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
23
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
16.5 to 19.5
Iron (Fe), % 48.8 to 58.2
59.2 to 69.9
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 16.5 to 20
10.5 to 14
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015