Ductile Iron torsion grade 60-40-18

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Ductile Iron torsion grade 60-40-18
Categories:	Metal; Ferrous Metal; Cast Iron; Alloy Cast Iron; Ductile Iron
Material Notes:	The listed composition represents possible constituent elements in 60-40-18. Most ductile irons are specified by mechanical properties and have loosely defined compositions. For example, 60-40-18 ductile iron is specified to have a minimum tensile strength of 60 ksi (414 MPa), a yield strength of 40 ksi (276 MPa) and an elongation of 18%. Copper, nickel, and molybdenum are often added to ductile irons to improve strength and hardenability. Determined for a single temperature of ductile iron, heat treated to approximate various standard grades. Properties were obtained using test bars machined from 25 mm keel blocks. Corrosion Resistance: Copper and nickel, along with chromium and additional amounts of silicon can improve corrosion resistance.
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Physical Properties	Original Value	Comments

Density	7.10 - 7.20 g/cc	Typical value of ductile iron

Mechanical Properties	Original Value	Comments
Hardness, Brinell	167
Hardness, Knoop	185	Converted from Brinell
Hardness, Vickers	173	Approximated. Converted from Brinell hardness.
Tensile Strength, Ultimate	472 MPa
Tensile Strength, Yield	195 MPa @Strain 0.0375 %
Modulus of Elasticity	63.0 GPa

Component Elements Properties	Original Value	Comments
Carbon, C	3.0 - 3.8 %	Total carbon
Cerium, Ce	0.0050 - 0.20 %
Chromium, Cr	0.030 - 0.070 %
Copper, Cu	0.15 - 1.0 %
Iron, Fe	94 %
Magnesium, Mg	0.030 - 0.060 %
Manganese, Mn	0.15 - 1.0 %
Molybdenum, Mo	0.010 - 0.10 %
Nickel, Ni	0.050 - 0.20 %
Phosphorus, P	<= 0.080 %
Silicon, Si	1.8 - 2.8 %
Sulfur, S	<= 0.0020 %

References for this datasheet.

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MDFE23 / 12020

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