Phone:
+86 18631189888
Email:
liyanhui@bestcastings.cn
Our OEM Custom Grey Iron Castings are engineered for industrial excellence, utilizing a specialized graphitic microstructure that provides a distinct gray fracture appearance. Known for its exceptional machinability and cost-effectiveness, grey iron is an ideal alloy for components requiring stability and high-performance durability in demanding environments.
By leveraging the self-lubricating properties of graphite flakes, our castings offer superior galling and wear resistance. With optimized silicon levels to enhance fluidity and corrosion resistance during the casting process, we provide high-precision components that ensure minimal solidification shrinkage and excellent structural integrity for various industrial applications.
| Material Grade | HT150 / HT200 / HT250 | Carbon (C) Range | 1.4% - 3.5% (Grade Dependent) |
|---|---|---|---|
| Silicon (Si) Range | 1.2% - 2.4% (Grade Dependent) | Manganese (Mn) | 0.5% - 1.2% |
| Phosphorus (P) | ≤ 0.2% | Sulfur (S) | ≤ 0.12% |
| Wall Thickness | Customizable (3mm to >50mm) | Casting Method | Lost Foam / Resin Sand |
| Surface Finish | High Accuracy / Smooth Finish | Weldability | Generally Easy to Weld |
Graphite flakes provide self-lubrication, significantly reducing galling and extending the service life of parts.
Lost foam casting shortens production cycles and reduces overall lead times for complex geometries.
The unique microstructure allows for easier cutting and chip breaking, reducing secondary processing costs.
Resin sand casting provides high rigidity, effectively eliminating shrinkage cavities and defects.
Low material costs combined with reduced mold expenses make grey iron a highly economical choice.
Enhanced silicon content ensures excellent flow during casting, allowing for intricate design details.
Strict quality control of raw iron and alloying elements to ensure grade consistency.
Advanced Lost Foam and Resin Sand techniques for diverse geometry requirements.
CNC machining capabilities to refine raw castings into high-tolerance finished parts.
Rigorous inspection to eliminate shrinkage cavities and internal structural voids.
Transparent OEM pipeline from blueprint design to final shipment delivery.
Comprehensive testing of tensile strength and hardness based on HT standards.
| Feature | Traditional Sand Casting | Our Resin Sand/Lost Foam |
|---|---|---|
| Tooling Cost | Moderate | Significantly Lower |
| Production Speed | Standard | High Efficiency |
| Surface Finish | Rough | Excellent / Smooth |
| Machining Needs | High | Minimal/Optimized |
| Defect Rate | Moderate | Very Low |
Grey iron is characterized by its graphitic microstructure (graphite flakes), which gives the fracture a grey appearance and provides superior machinability and self-lubricating wear resistance.
Lost Foam Casting is ideal for small, complex components as it reduces mold costs, shortens production cycles, and improves overall efficiency while maintaining high accuracy.
No, compared to other iron castings, grey iron has low tensile strength and ductility, meaning its impact and shock resistance are almost non-existent.
The high strength and rigidity of resin sand molds effectively eliminate shrinkage cavities and other common defects found in traditional sand casting processes.
Yes, grey iron is generally considered easy to weld, although specialized procedures may be required depending on the specific grade (HT150-HT250) and application.
Silicon promotes better corrosion resistance and increases the fluidity of the molten metal, allowing it to fill complex mold shapes more effectively.
