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EN 1.1221 Steel vs. Automotive Malleable Cast Iron

Both EN 1.1221 steel and automotive malleable cast iron are iron alloys. They have a very high 97% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.1221 steel and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 250
130 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 10 to 21
1.0 to 10
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
70
Tensile Strength: Ultimate (UTS), MPa 730 to 870
350 to 720
Tensile Strength: Yield (Proof), MPa 390 to 550
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
41
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
1.9
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
130 to 950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 31
13 to 26
Strength to Weight: Bending, points 23 to 26
14 to 24
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 23 to 28
9.9 to 21

Alloy Composition

Carbon (C), % 0.57 to 0.65
2.2 to 2.9
Chromium (Cr), % 0 to 0.4
0
Iron (Fe), % 97.1 to 98.8
93.6 to 96.7
Manganese (Mn), % 0.6 to 0.9
0.15 to 1.3
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.035
0.020 to 0.15
Silicon (Si), % 0 to 0.4
0.9 to 1.9
Sulfur (S), % 0 to 0.035
0.020 to 0.2

Comparable Variants