Supply chain relocation has turned Southeast Asia into a fast-growing hub for aluminum casting. Gravity die casting stands out here, thanks to moderate capital investment, good metallurgical integrity and compatibility with T6 heat treatment. It perfectly fits mid-volume component production requirements for local foundries.

Thailand is ASEAN’s traditional automotive and motorcycle manufacturing base. Many tier-one suppliers in the Eastern Economic Corridor (EEC) are replacing old manual tilting gravity casting stations with servo-controlled automatic machines. Typical castings include motorcycle wheels, cylinder heads, intake manifolds, shock absorber brackets and EV motor housings. Buyers evaluate total cost of ownership: scrap rate, cycle time, energy consumption and labour saving, not just machine price.

Indonesia’s market is driven by massive motorcycle fleets plus construction machinery demand. The biggest pain points are shortage of skilled foundry workers, inconsistent quality, porosity and shrinkage defects. Aluminium price volatility and high energy cost squeeze profit margins. Automated gravity casting reduces reliance on veteran casters and stabilizes yield.

Vietnam’s foundry clusters are mainly in Bac Ninh and Haiphong. New foundries prefer compact machines with quick mould changeover. Their products cover automotive brackets, hydraulic parts and heat sinks. Most local foundries still rely heavily on sand casting, and only a few can consistently produce high-quality A356 gravity cast parts.

Compared to high-pressure die casting, gravity die casting works best for medium batch sizes (several hundred up to 50,000 pcs/year). Castings can be heat-treated and have good pressure tightness. It costs less than HPDC equipment, which matches the budget of most small & medium foundries in ASEAN.

Main challenges for Southeast Asian foundries

1. Shortage of skilled casting operators. Manual pouring easily causes turbulence, gas porosity and cold shut. Servo tilting fills mould in laminar flow and reduces human error.
2. High scrap rate. Porosity, cold shut and shrinkage porosity are frequent defects. Preheating, degassing, gating & riser design, mould temperature control are all critical. Automatic systems lock process parameters for repeatable production.
3. Tightening environmental regulations. Waste gas, dust and scrap aluminium recycling need compliance. Energy consumption is now a key index during equipment selection.
4. Limited capital budget. Gravity casting requires lower upfront investment and shorter ROI than HPDC lines.