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Automotive Malleable Cast Iron vs. S45503 Stainless Steel

Both automotive malleable cast iron and S45503 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 290
410 to 500
Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 1.0 to 10
4.6 to 6.8
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 70
75
Tensile Strength: Ultimate (UTS), MPa 350 to 720
1610 to 1850
Tensile Strength: Yield (Proof), MPa 220 to 590
1430 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 14
11

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
15
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 1.5
3.4
Embodied Energy, MJ/kg 20
48
Embodied Water, L/kg 45
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
82 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 13 to 26
57 to 65
Strength to Weight: Bending, points 14 to 24
39 to 43
Thermal Shock Resistance, points 9.9 to 21
56 to 64

Alloy Composition

Carbon (C), % 2.2 to 2.9
0 to 0.010
Chromium (Cr), % 0
11 to 12.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 93.6 to 96.7
72.4 to 78.9
Manganese (Mn), % 0.15 to 1.3
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
7.5 to 9.5
Niobium (Nb), % 0
0.1 to 0.5
Phosphorus (P), % 0.020 to 0.15
0 to 0.010
Silicon (Si), % 0.9 to 1.9
0 to 0.2
Sulfur (S), % 0.020 to 0.2
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4