Clearfield Machine - Gray Iron Castings

Gray Iron is by the oldest of cast iron. It’s an ideal metal used for intricate castings, because it ‘s properties allow for minimal shrinkage.

Clearfield produces Gray Iron castings up to 18,000 pounds in various configurations from basic bars and rings, to highly cored volutes cylinders, and impellers. We work with wooden, Styrofoam or metal patterns either supplied by customers, or built by our own pattern shop. Clearfield specializes in Gray Iron castings for single prototypes to lower volume production runs. We also have value added processes such as machining, painting, and assembly.

Clearfield Machine produces gray iron castings with the following characteristics:

CLEARFIELD MACHINE GRAY IRON SPECIFICATIONS
SPEC #	GRADE	TENSILE	TYPICAL USAGE
ASTM A126	A, B, C	20,000 to 40,000 PSI	Valves, flanges, pipe fittings
ASTM A48	20 thru 55	20,000 to 55,000 PSI Minimums	Gen. machinery municipal, compressor parts, heavy tools & large gear
ASTM A159	G1800 thru G4000	20,000 to 40,000 PSI	Automotive, truck cylinders, pistons, brake drums & heavy equipment parts
SAE J431	G4000
ASTM A278	40 thru 50	40,000 to 50,000 PSI Minimums	Valve bodies, pressure vessels up to 650 F
ASTM A319	I, II, III	UP TO 40,000 PSI	Non pressure casting for elevated temperatures, glass molds, furnace parts, cooling beds