Iron Casting Methods for OEMs: YBMETAL Helps You Choose the Right Method
Choosing the right iron casting method is critical for performance, cost, and lead time. At YBMETAL, we don’t just offer Green Sand Casting, Resin Sand Casting, and Shell Molding Iron Casting — we help you evaluate your part and select the optimal casting process based on its weight, geometry, functional needs, and volume. As an engineering-led China casting supplier with in-house CNC machining and ISO-certified foundry partners, YBMETAL ensures each OEM part follows the most efficient, cost-effective, and quality-assured production route.
We Match Your Part to the Right Casting Method
Not all parts are created equal, and not all casting methods perform the same. Based on your drawing, tolerances, surface finish, and post-processing requirements, our engineers recommend the best-fit process to avoid over- or under-engineering. You don’t need to decide up front — just send us your part, and we’ll guide you.
Casting Methods
Green Sand Casting
- Best for: High-volume, low-cost production
- ✅ Material: Gray Iron (HT200–HT300), Ductile Iron (QT450–QT700)
- ✅ Size range: 2–500 kg
- Most economical for medium-to-large batches
- Short lead time and low tooling cost
- Suitable for brackets, flanges, pump housings
Resin Sand Casting
- ✅ Best for: Large, complex, heavy-duty parts
- ✅ Material: Gray Iron, Ductile Iron, Cast Steel
- ✅ Size range: 5–8000 kg
- High mold strength and tighter tolerances
- Ideal for gearboxes, machine bases, valve bodies
- Supports pressure testing, heat treatment, CNC
Shell Molding Casting
- ✅ Best for: Precision parts with fine features
- ✅ Material: Gray Iron, Ductile Iron
- ✅ Size range: 0.5–80 kg
- Superior surface finish and dimensional repeatability
- Excellent for valve bodies, exhaust manifolds, support brackets
- Perfect fit for tight-machining downstream
Casting Process Comparison Table
Feature / Method |
Green Sand |
Resin Sand |
Shell Molding |
Best for |
High volume |
Large complex |
Precision parts |
Weight range |
2–500 kg |
5–8000 kg |
0.5–80 kg |
Surface finish |
Moderate |
Good |
Excellent |
Machining allowance |
Higher |
Moderate |
Low |
Tooling cost |
Low |
Medium |
High |
Core complexity |
Moderate |
Complex cores |
Limited |
Typical parts |
Flanges, pipes |
Bases, housing |
Valves, brackets |
Ductile Iron Foundry China
Let YBMETAL Guide Your Casting Process
You don’t need to decide the casting method alone. We’ll:
- Review your 2D/3D drawing, specs, and functional needs
- Recommend the most suitable casting process
- Provide a fast proposal with lead time, cost, and DFM suggestions
- Deliver quality-controlled, fully machined parts — ready to assemble