Product Description and Process
cast iron astm a48 grade 20 25 gg20 sae g3000 grey iron casting foundry
Production process: green sand molding, pre-coated sand molding and resin sand molding which can produce iron castings from 50 gram to 2000 kilograms
Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.
Surface treatment process: paint coating, electrophoretic coating, electrogalvanizing coating, black oxide coating, powder coating, etc.
Product Material and Uses
Normally produce with gray iron HT200, HT250, ductile iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, etc.
The grey/gray 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.
Gray Iron Specifications:
Gray Iron has a dense gray structure and offers excellent machinability. Grades 25, 30, 35 and 40 can fill specific requirements for hardness and wear, and heat treatments can yield even higher mechanical properties. Popular applications for gray iron include diesel and gasoline engine blocks and cylinder liners, and structural machine components where vibration dampening is required.
Grade or Class
Min. Tensile Strength (PSI)
Valves, flanges and pipe fittings
.15% S. Max.
Castings intended for general engineering use where strength is a major consideration
1. Test bar size shall be related in cooling to the critical section of the casting and so specified.
Cast in sand molds for the automobile, truck, tractor, and allied industries
Pressure containing parts for use up to 650ºF
Castings for intended use above 450ºF should be stress relieved.