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S44800 Stainless Steel vs. S33550 Stainless Steel

Both S44800 stainless steel and S33550 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S44800 stainless steel and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 300
270
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 82
79
Shear Strength, MPa 370
470
Tensile Strength: Ultimate (UTS), MPa 590
680
Tensile Strength: Yield (Proof), MPa 450
310

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
470
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 19
24
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.8
4.3
Embodied Energy, MJ/kg 52
61
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 42
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
220
Resilience: Unit (Modulus of Resilience), kJ/m3 480
250
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
24
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.6
3.9
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.010
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 28 to 30
25 to 28
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 62.6 to 66.5
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0 to 0.3
0 to 1.5
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 2.0 to 2.5
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0 to 0.020
0.18 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030