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AISI 384 Stainless Steel vs. SAE-AISI 9254 Steel

Both AISI 384 stainless steel and SAE-AISI 9254 steel are iron alloys. Both are furnished in the annealed condition. They have 66% of their average alloy composition in common. There are 25 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 SAE-AISI 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 480
660

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 910
410
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 20
2.2
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.7
1.5
Embodied Energy, MJ/kg 52
20
Embodied Water, L/kg 150
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 11
20

Alloy Composition

Carbon (C), % 0 to 0.040
0.51 to 0.59
Chromium (Cr), % 15 to 17
0.6 to 0.8
Iron (Fe), % 60.9 to 68
96.1 to 97.1
Manganese (Mn), % 0 to 2.0
0.6 to 0.8
Nickel (Ni), % 17 to 19
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.040