Gray Iron Casting

Gray iron is the most widely used material in the casting industry, with annual production several times that of all other cast metals. The name is derived from the characteristic gray color of the metal partly due to the contained flakes of graphite within the microstructure. These graphite flakes result in excellent machinability, good wear resistance, and high vibration absorption. An experienced Gray iron foundry will have the capability to cast gray iron into complex shapes at a relatively low cost.

The various types of gray iron are most commonly designated by a class number, which indicates the minimum tensile strength in thousands of pounds per square inch. Ex.: A class 30 iron has 30,000-psi minimum tensile strength.

Hiler Industries Gray cast iron materials: (SAE J431)

G1800	120-187
G2500	170-229
G3000	187-241
G3500	207-255
G4000	217-269

Why Hiler Industries?

Hiler Industries has been an industry leader in the manufacture of gray cast iron, ductile iron, white irons and other specialty irons since 1946, and continues to lead the way in tooling design for improved yield, reduced machine stock, and near net shape as-cast products. With 78 years of casting experience and worldwide leading expertise in the shell mold and core processes, Hiler Industries is likely the destination your casting needs require.

To learn more about Hiler Industries and our industry leading capabilities, reach out and speak to one of our representatives today.

Gray Iron Casting

Hiler Industries Gray cast iron materials: (SAE J431)

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