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Automotive Malleable Cast Iron vs. EN 1.4568 Stainless Steel

Both automotive malleable cast iron and EN 1.4568 stainless steel are iron alloys. They have 75% 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 1.4568 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.0 to 10
2.3 to 21
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 70
76
Tensile Strength: Ultimate (UTS), MPa 350 to 720
830 to 1620
Tensile Strength: Yield (Proof), MPa 220 to 590
330 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 41
16
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
13
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 20
40
Embodied Water, L/kg 45
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
36 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
290 to 5710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
30 to 58
Strength to Weight: Bending, points 14 to 24
25 to 40
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 9.9 to 21
23 to 46

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.5
Carbon (C), % 2.2 to 2.9
0 to 0.090
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 93.6 to 96.7
70.9 to 76.8
Manganese (Mn), % 0.15 to 1.3
0 to 1.0
Nickel (Ni), % 0
6.5 to 7.8
Phosphorus (P), % 0.020 to 0.15
0 to 0.040
Silicon (Si), % 0.9 to 1.9
0 to 0.7
Sulfur (S), % 0.020 to 0.2
0 to 0.015