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AISI 384 Stainless Steel vs. S39274 Stainless Steel

Both AISI 384 stainless steel and S39274 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% 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 AISI 384 stainless steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 480
900

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 910
1100
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 20
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.7
4.3
Embodied Energy, MJ/kg 52
60
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 16
43
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 4.3
4.2
Thermal Shock Resistance, points 11
25

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 15 to 17
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 60.9 to 68
57 to 65.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 17 to 19
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5