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S44660 Stainless Steel vs. Automotive Malleable Cast Iron

Both S44660 stainless steel and automotive malleable cast iron are iron alloys. They have 67% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S44660 stainless steel and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
130 to 290
Elastic (Young's, Tensile) Modulus, GPa 210
180
Elongation at Break, % 20
1.0 to 10
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
70
Tensile Strength: Ultimate (UTS), MPa 660
350 to 720
Tensile Strength: Yield (Proof), MPa 510
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
41
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
1.9
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 4.3
1.5
Embodied Energy, MJ/kg 61
20
Embodied Water, L/kg 180
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 640
130 to 950
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
13 to 26
Strength to Weight: Bending, points 22
14 to 24
Thermal Diffusivity, mm2/s 4.5
11
Thermal Shock Resistance, points 21
9.9 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
2.2 to 2.9
Chromium (Cr), % 25 to 28
0
Iron (Fe), % 60.4 to 71
93.6 to 96.7
Manganese (Mn), % 0 to 1.0
0.15 to 1.3
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 1.0 to 3.5
0
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.040
0
Phosphorus (P), % 0 to 0.040
0.020 to 0.15
Silicon (Si), % 0 to 1.0
0.9 to 1.9
Sulfur (S), % 0 to 0.030
0.020 to 0.2
Titanium (Ti), % 0.2 to 1.0
0