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AISI 384 Stainless Steel vs. SAE-AISI 1340 Steel

Both AISI 384 stainless steel and SAE-AISI 1340 steel are iron alloys. 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 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160 to 210
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
540 to 730

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
400
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.7
1.4
Embodied Energy, MJ/kg 52
19
Embodied Water, L/kg 150
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
19 to 26
Strength to Weight: Bending, points 17
19 to 23
Thermal Diffusivity, mm2/s 4.3
14
Thermal Shock Resistance, points 11
17 to 23

Alloy Composition

Carbon (C), % 0 to 0.040
0.38 to 0.43
Chromium (Cr), % 15 to 17
0
Iron (Fe), % 60.9 to 68
97.2 to 97.9
Manganese (Mn), % 0 to 2.0
1.6 to 1.9
Nickel (Ni), % 17 to 19
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040