Your Trusted Aluminum Gravity Casting Factory in China
Looking for a reliable partner in aluminum gravity casting? At Yongzhu Casting, we specialize in high-precision permanent mold casting with ADC12, A356, and EN AC-44100 alloys. Whether for electric motor housings or energy modules, our castings meet global OEM standards, with tolerances down to ±0.05 mm and production lead times as fast as 20 days.
What Is Gravity Casting?
Gravity casting, also called permanent mold casting, uses gravity—not pressure—to fill metal molds with molten aluminum.
This method is ideal for medium-to-high volume production of parts that require good surface finish and consistent mechanical strength. Unlike die casting, it involves lower equipment cost and simpler setup. Benefits include:
Reduced porosity and shrinkage
Good mechanical strength and dimensional accuracy
Better surface finish than sand casting
Compatibility with multiple aluminum alloys
This process suits components like gear housings, LED brackets, enclosures, and heat sinks.
Why Buyers Choose Yongzhu for Gravity Casting Projects
At Yongzhu Casting, we don’t just offer gravity casting—we offer consistency, precision, and real support for your production goals. Buyers come to us not only for our aluminum casting expertise, but also for our ability to deliver reliable outcomes under tight timelines and demanding specs.
Here’s what makes our gravity casting service stand out:
Reduced Porosity & Solid Cast Quality – Our process control helps minimize internal voids and defects, delivering stronger, more stable parts.
High Dimensional Accuracy – With in-house CNC and strict mold control, we routinely achieve tolerances of ±0.05 mm.
Versatile Alloy Options – We support ADC12, A356, EN AC-44100, and more, depending on structural or finish requirements.
No MOQ for Sampling – Small batch sampling starts from just 20 pcs, helping you test before full commitment.
Fast Lead Times – Mold + sample in as little as 10–15 working days, even for new designs.
Whether you’re in automotive, lighting, or machinery sectors, we treat each casting project like a long-term partnership—not a one-time order.
Gravity Casting vs Sand Casting and Die Casting
| Feature | Gravity Casting | Sand Casting | Die Casting |
|---|---|---|---|
| Tooling Cost | Medium | Low | High |
| Surface Finish | Smooth | Rough | Excellent |
| Tolerance | ±0.05 mm | ±0.3 mm | ±0.02 mm |
| Production Speed | Medium | Slow | Fast |
| Best For | Medium batches | Prototypes/large parts | High-volume small parts |
Our Products
Experience Versatility and Precision: From standard gravity casting parts to custom-designed solutions, your needs shape our manufacturing process for exceptional results.
Request A Quote for More Details
Where Aluminum Gravity Casting Is Used
Our gravity cast parts are found in:automotive (motor housings, gear enclosures, sensor casings,) machinery (bearing seats, actuator bases), furniture, lighting (heat sinks, LED brackets, lamp holders), electronics (battery box covers, inverter cooling plates), our solutions elevate your business.
Our Gravity Casting Process and Production Timeline
Streamlined Processes, Timely Results: Embrace efficiency with our clear, reliable production timelines and advanced die casting techniques.
Design(2-5days)
Design molds according to requirements, confirm the best solution.
CNC(15-30days)
includes melting, casting, grinding, CNC machining, testing, packaging, and a series of operations.
Shipping(2-30days)
Speed depends on the mode of transportation, destination, and the current logistics situation.
OTHER PRODUCTS
Explore more solutions to your casting needs. At Yongzhu Casting, we expand possibilities by offering diverse casting and processing methods, turning your challenges into opportunities.
Die Casting
Experience smoother production with our precise die casting services.
Precision Casting
Boost your product accuracy with our precision casting solutions.
Gravity Casting
Optimize your manufacturing with our reliable gravity casting solutions.
CNC Machining
Enhance precision and control with our CNC machining services.
Aluminum Gravity Casting FAQs
Looking for answers to gravity casting questions? Our comprehensive guide illuminates the process, benefits, and applications of this precise casting method.
What is the difference between gravity and die casting?
Gravity casting uses no pressure, making it better for thick walls and larger parts.
Which aluminum alloy is best for gravity casting?
ADC12 is great for castability; A356 works well for structural parts after T6 treatment.
What’s the typical tolerance for gravity-cast parts?
We typically guarantee ±0.05 mm with controlled process and CNC finishing.
What’s your minimum order quantity (MOQ)?
Our MOQ is 100 pcs for standard parts, or 20 pcs for sampling.
Can you export to Europe and the USA?
Yes — we have years of experience handling EU/US-standard projects with ROHS and REACH compliance.
Looking for a Reliable Aluminum Gravity Casting Factory?
We’ve been casting since 2004. Whether you need new product development or stable batch supply, our team is ready to help. Email us your drawings or project brief — we’ll quote within 24 hours.
