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EN 1.4451 Stainless Steel vs. S33550 Stainless Steel

Both EN 1.4451 stainless steel and S33550 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 (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4451 stainless steel and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
40
Fatigue Strength, MPa 370
270
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 750
680
Tensile Strength: Yield (Proof), MPa 540
310

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
470
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 20
24
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.8
4.3
Embodied Energy, MJ/kg 53
61
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 39
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
220
Resilience: Unit (Modulus of Resilience), kJ/m3 710
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.5
3.9
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 25 to 27
25 to 28
Copper (Cu), % 2.8 to 3.5
0
Iron (Fe), % 56.2 to 64.6
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 5.0 to 7.0
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0.12 to 0.22
0.18 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030