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Automotive Malleable Cast Iron vs. EN 1.4517 Stainless Steel

Both automotive malleable cast iron and EN 1.4517 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 27 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 automotive malleable cast iron and the bottom bar is EN 1.4517 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.0 to 10
25
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 70
79
Tensile Strength: Ultimate (UTS), MPa 350 to 720
730
Tensile Strength: Yield (Proof), MPa 220 to 590
550

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 41
17
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
20
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 1.5
3.8
Embodied Energy, MJ/kg 20
53
Embodied Water, L/kg 45
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
170
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
740
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
26
Strength to Weight: Bending, points 14 to 24
23
Thermal Diffusivity, mm2/s 11
4.6
Thermal Shock Resistance, points 9.9 to 21
20

Alloy Composition

Carbon (C), % 2.2 to 2.9
0 to 0.030
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.5
Iron (Fe), % 93.6 to 96.7
56.7 to 65.1
Manganese (Mn), % 0.15 to 1.3
0 to 1.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0.020 to 0.15
0 to 0.035
Silicon (Si), % 0.9 to 1.9
0 to 1.0
Sulfur (S), % 0.020 to 0.2
0 to 0.025