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S33550 Stainless Steel vs. S44535 Stainless Steel

Both S33550 stainless steel and S44535 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 76% of their average alloy composition in common.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is S44535 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 270
210
Poisson's Ratio 0.27
0.27
Rockwell B Hardness 82
77
Shear Modulus, GPa 79
78
Shear Strength, MPa 470
290
Tensile Strength: Ultimate (UTS), MPa 680
450
Tensile Strength: Yield (Proof), MPa 310
290

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
450
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 24
11
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.3
2.4
Embodied Energy, MJ/kg 61
34
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 30
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110
Resilience: Unit (Modulus of Resilience), kJ/m3 250
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
16
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 3.9
5.6
Thermal Shock Resistance, points 15
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Carbon (C), % 0.040 to 0.1
0 to 0.030
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
20 to 24
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 48.8 to 58.2
73.2 to 79.6
Lanthanum (La), % 0.025 to 0.070
0.040 to 0.2
Manganese (Mn), % 0 to 1.5
0.3 to 0.8
Nickel (Ni), % 16.5 to 20
0
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.030 to 0.2