Gray Iron Casting
At Syncraft Precision, we produce custom industrial casting products that deliver precision and durability across industries such as mining, marine, and agriculture. With a focus on custom marine components for boats and mining equipment for heavy industries, our solutions are built to perform in the most demanding environments.
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Gray Iron Casting
Gray iron casting is a widely used manufacturing process known for its excellent castability, high wear resistance, and superior machinability. It is composed primarily of iron, carbon, and silicon, with graphite flakes dispersed throughout its structure, giving it its characteristic gray appearance. This unique microstructure enhances its vibration-dampening properties, making it an ideal choice for applications requiring reduced noise and improved durability. Industries such as automotive, machinery, and construction frequently rely on gray iron casting for producing engine blocks, brake rotors, pipes, and various machine components due to its cost-effectiveness and excellent thermal conductivity.
At SynCraft Precision, we specialize in delivering high-quality gray iron castings tailored to meet the specific requirements of diverse industries. Our advanced casting techniques ensure consistency, precision, and optimal mechanical properties, resulting in components that offer exceptional strength and longevity. With a commitment to innovation and stringent quality control, we produce gray iron castings that meet the most demanding performance standards. Whether you need custom-engineered parts or standard components, SynCraft Precision provides reliable solutions that enhance efficiency and operational performance in a wide range of applications.
The Gray Iron Casting Common Applications
Gray Iron Casting Advantage
Cheaper than ductile iron or steel.
Flows easily into molds, even for complex shapes.
Graphite flakes retain lubricants, reducing friction.
Stable at high temperatures (e.g., engine components).
The Gray Iron Casting Common Applications
Limitations Gray Iron Casting
Prone to cracking under tension or impact.
Compared to ductile iron or steel.
Requires coatings for harsh environments.
Ductile Iron Casting Grades
| Grade | Description | Application |
|---|---|---|
| 60-40-18 | High ductility, good impact resistance | Piping systems, pump housings |
| 65-45-12 | Good strength, moderate ductility | Automotive parts, machinery components |
| 80-55-06 | High tensile strength, good wear resistance | Gears, crankshafts |
| 100-70-03 | Very high strength, lower ductility | Structural parts, heavy machinery |
| 120-90-02 | Extreme strength, reduced flexibility | High-stress components, industrial gears |
| ASTM A536 60-40-18 | High elongation, impact resistance | Pipe fittings, hydraulic components |
| ASTM A536 65-45-12 | Balanced strength and ductility | Automotive suspension parts, brackets |
| ASTM A536 80-55-06 | Good hardness, wear resistance | Pistons, gears |
| ASTM A536 100-70-03 | Very high strength, reduced elongation | Heavy-duty machinery, frames |
| ASTM A536 120-90-02 | Maximum strength, brittle characteristics | High-stress gears, industrial rollers |
Samples of Gray Iron Casting
Grades and Standards (Recap from Previous Response)
Gray iron is graded by tensile strength (MPa or psi) under standards like:
- ASTM A48: Class 20 (138 MPa) to Class 60 (414 MPa).
- EN 1561 (ISO 185): EN-GJL-150 to EN-GJL-300.
- JIS G5501: FC100 to FC350.
Factors Affecting Performance - Cooling Rate: Faster cooling increases strength (promotes pearlite).
- Superior Strength & Durability
- Excellent Machinability
- Enhanced Ductility & Toughness
- Cost-Effective & Versatile
