Ductile 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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Ductile Iron Casting
Ductile iron casting, also known as nodular or spheroidal graphite iron casting, is a specialized process that produces iron with enhanced strength, toughness, and ductility. Unlike traditional cast iron, which is brittle, ductile iron contains small amounts of magnesium, which causes the carbon in the iron to form spherical graphite nodules. This unique microstructure provides superior mechanical properties, making it ideal for applications requiring high durability and resistance to impact.
At SynCraft Precision, we utilize advanced ductile iron casting techniques to produce components with exceptional strength and reliability. Our process ensures precise control over material composition, resulting in castings that offer excellent machinability, fatigue resistance, and wear performance. These properties make ductile iron an excellent choice for industries such as automotive, construction, and heavy machinery, where performance under demanding conditions is critical.
The Ductile Iron Casting Process
Ductile Iron Casting Process

Design and produce molds according to the requirements of the drawings. Generally, wood molds can be used for single-piece production. Our mold is mainly made of aluminum.

According to the required metal composition, the chemical composition is matched. After that, we select the appropriate melting furnace to melt the alloy material.

Pour qualified molten metal into the sandbox equipped with the mold. The pouring stage has high safety requirements. We have rigorous process control to protect the safety of our employees.

After the molten metal is poured and solidified, the molding sand is removed. The gate and other attachments are knocked out to form the required casting.

Modeling: forming the cavity of the casting with molding sand.
Core-making: forming the inner shape of the castin.
Mold matching: putting the core into the cavity and closing the upper and lower flasks.
Post Treatments of Ductile Iron Casting

Seals microporosity to enhance pressure-tightness and fluid retention capabilities.

Prepares cast components for final use with precise assembly processes.

Tailored treatments based on specific industry requirements for performance.
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 Ductile Iron Castings



Advantages of Ductile Iron Casting
- Superior Strength & Durability
- Excellent Machinability
- Enhanced Ductility & Toughness
- Cost-Effective & Versatile

Ductile Iron Casting Applications


