Gray Iron Casting Spare Parts

Gray Iron Casting Spare Parts

Plummer Block Housing Gray Iron Casting China Supplier Professional Castings Team Product Description and Process Plummer Block Housing Gray Iron Casting China Supplier Professional Castings Team Production process: Green sand casting process pre-coated sand casting process resin sand casting...

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Plummer Block Housing Gray Iron Casting China Supplier Professional Castings Team

Product Description and Process

Plummer Block Housing Gray Iron Casting China Supplier Professional Castings Team


Production process:

Green sand casting process

pre-coated sand casting process

resin sand casting process

Weight range: from 50 gram to 5,000 kilograms for ductile iron casting product


Machining process:

CNC machine, machining center, lathe, mill machine, drill machine, etc.


Surface treatment process:

paint coating, electrophoretic paint coating, electrogalvanizing coating, black oxide coating, phosphate treatment,  powder coating, etc.


Product Material and Uses

Normally production with gray iron HT200, HT250, ductile iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, 100-70-03, etc.

The grey iron casting products are widely used for Auto-cars, trains, trucks, vehicle components, mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, etc.


Classification of Grey Iron Classes

In the United States, the classification for grey iron is usually set using the ASTM International standard A48. ASTM A247 is also commonly used to describe the graphite structure.  Grey iron is grouped into classes which correspond with its minimum tensile strength in thousands of pounds per square inch (ksi); (i.e. class 20 grey iron has a minimum tensile strength of 20,000 psi (140 MPa)). Other ASTM standards that deal with gray iron include ASTM A126, ASTM A278, and ASTM A319.

Class 20 grey iron has a ferrite matrix and a high carbon equivalent. Higher strength gray irons, up to class 40, have lower carbon equivalents and a pearlite matrix. To get grey iron above class 40 requires alloying to provide solid solution strengthening.  Grey iron can also be heat treated which modifies the matrix giving the cast iron greater strength. Class 80 is the highest class available for grey iron and it makes the iron have high tensile strength but low impact resistance because class 80 parts are more brittle.


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