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Automotive Malleable Cast Iron vs. EN 1.4020 Stainless Steel

Both automotive malleable cast iron and EN 1.4020 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 290
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.0 to 10
13 to 34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 70
77
Tensile Strength: Ultimate (UTS), MPa 350 to 720
770 to 1130
Tensile Strength: Yield (Proof), MPa 220 to 590
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 14
17

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
11
Density, g/cm3 7.6
7.6
Embodied Carbon, kg CO2/kg material 1.5
2.5
Embodied Energy, MJ/kg 20
37
Embodied Water, L/kg 45
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
460 to 2290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
28 to 41
Strength to Weight: Bending, points 14 to 24
25 to 32
Thermal Shock Resistance, points 9.9 to 21
16 to 23

Alloy Composition

Carbon (C), % 2.2 to 2.9
0 to 0.15
Chromium (Cr), % 0
16.5 to 19
Iron (Fe), % 93.6 to 96.7
62.8 to 71.8
Manganese (Mn), % 0.15 to 1.3
11 to 14
Nickel (Ni), % 0
0.5 to 2.5
Nitrogen (N), % 0
0.2 to 0.45
Phosphorus (P), % 0.020 to 0.15
0 to 0.045
Silicon (Si), % 0.9 to 1.9
0 to 1.0
Sulfur (S), % 0.020 to 0.2
0 to 0.030