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AISI 384 Stainless Steel vs. Grey Cast Iron

Both AISI 384 stainless steel and grey cast iron are iron alloys. They have 66% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
69
Tensile Strength: Ultimate (UTS), MPa 480
160 to 450

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1380
1180
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 20
1.9
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 3.7
1.5
Embodied Energy, MJ/kg 52
21
Embodied Water, L/kg 150
44

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
5.8 to 17
Strength to Weight: Bending, points 17
8.7 to 17
Thermal Diffusivity, mm2/s 4.3
13
Thermal Shock Resistance, points 11
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.040
3.1 to 3.4
Chromium (Cr), % 15 to 17
0
Iron (Fe), % 60.9 to 68
92.1 to 93.9
Manganese (Mn), % 0 to 2.0
0.5 to 0.7
Nickel (Ni), % 17 to 19
0
Phosphorus (P), % 0 to 0.045
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.030
0 to 0.15