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S44800 Stainless Steel vs. AISI 384 Stainless Steel

Both S44800 stainless steel and AISI 384 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S44800 stainless steel and the bottom bar is AISI 384 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 82
76
Tensile Strength: Ultimate (UTS), MPa 590
480

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.8
3.7
Embodied Energy, MJ/kg 52
52
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 42
16
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
17
Thermal Diffusivity, mm2/s 4.6
4.3
Thermal Shock Resistance, points 19
11

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.040
Chromium (Cr), % 28 to 30
15 to 17
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 62.6 to 66.5
60.9 to 68
Manganese (Mn), % 0 to 0.3
0 to 2.0
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 2.0 to 2.5
17 to 19
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030