Ductile iron (also known as spheroidal graphite or SG iron) is engineered for strength, toughness, and fatigue resistance. Compared to grey iron, it offers better elongation, higher tensile strength, and more impact tolerance. It’s also a practical alternative to steel — meeting the performance requirements of many steel parts and weldments at a lower cost.
High tensile and yield strength
Excellent impact and fatigue resistance
Strong elongation and ductility
Lower-cost alternative to many steel parts
Ductile iron castings are used in structural and mechanical parts that demand strength, reliability, and long-term performance. We produce ductile iron to ASTM grade ( ASTM A536) specifications, with custom alloys available on request.
Applications include:
| Grade | Tensile Strength, min (KSI) | Yield Strength, min (KSI | Elongation in 2", min (%) |
|---|---|---|---|
| 60-40-18 | 60 | 40 | 18 |
| 65-45-12 | 65 | 45 | 12 |
| 80-55-06 | 80 | 55 | 6 |
| 100-70-03 | 100 | 70 | 3 |
| 120-90-02 | 120 | 90 | 2 |
We provide end-to-end ductile iron casting services, combining metallurgical expertise with flexible production to deliver strong, high-performance parts. All casting, machining, and QA are handled in-house to reduce delays and ensure consistency.
Ductile iron is valued across industries that need robust, pressure-rated components built to withstand force, shock, and fatigue. We support OEMs and industrial manufacturers with precision parts that perform in the field.
Agriculture
High-strength castings for axles, frames, and linkages that work in the toughest conditions.
Construction and infrastructure
Reliable brackets, clamps, and heavy cast components for stability and load-bearing.
OEM manufacturing
Engineered ductile iron parts for assemblies requiring long life and dimensional stability.
Whether you’re designing a new part or solving a production challenge, our engineers are here to help — with real answers, fast feedback, and practical solutions.
