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Grey Cast Iron vs. AISI 384 Stainless Steel

Both grey cast iron and AISI 384 stainless steel 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 grey cast iron and the bottom bar is AISI 384 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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