Die Casting in Mexico

There are two primary processes: hot chamber and cold chamber. Hot chamber suits low-melting-point metals such as zinc and offers fast cycle times. Cold chamber suits aluminum, keeping the molten metal separate from the injection system. Our engineering team recommends the right process at the feasibility review.

Pressure die casting forces molten metal into the mold under constant pressure until it solidifies, which fills the mold quickly and supports higher production volume. Gravity casting fills the mold from the bottom up using gravity. Pressure die casting costs more to set up, so it suits recurring volume rather than short runs.

We die cast aluminum and zinc alloys. Aluminum is lightweight, conductive, and corrosion resistant; zinc adds impact strength and ductility. Our engineering team confirms the best alloy for your part.

Die casting produces complex, dimensionally stable parts at high speed with thin walls and an excellent surface finish, often with little or no post-run machining. That makes it cost effective for high-volume non-ferrous production.

Standard production lead time is 4 to 8 weeks from our Monterrey facilities, with tooling and first-article timing confirmed at the quote stage. Mexico's proximity to the U.S. border shortens transit versus Asia-source programs. Rush programs can be reviewed case by case.

Die casting carries high tooling cost, so it is built for recurring production rather than one-off parts. We will tell you at the quote stage whether your volume is a fit and recommend the most cost-effective process.

Nearshoring die casting to Mexico shortens the supply chain to the U.S. market, qualifies most programs for USMCA duty-free treatment, and gives you a foundry within truck range of the border. Our facilities in Monterrey keep transit short, make plant tours practical, and put one U.S. point of contact between you and the production line.

Truck transit from our Monterrey facilities to most U.S. destinations runs 2 to 4 days, far shorter than the multi-week ocean transit from Asia. We manage cross-border freight and customs clearance so castings move from the foundry to your dock without a gap.

We manage customs clearance on the Mexico-to-U.S. crossing and provide USMCA certificates of origin where your part qualifies for duty-free treatment. Freight and any remaining duties are quoted up front so there are no invoice surprises.

Mexico produces relatively little primary metal and relies on imports and recycling. Redstone can buy U.S.-smelted ingot, truck it across the border, and cast it at our Monterrey facilities. Because that material originates in the U.S., it is not subject to Section 232 duties on foreign-produced metal. Alloy composition is verified by mass spectrometer before the pour.

Inconsistent wall thickness. Non-uniform walls cause uneven fill and cooling, which leads to porosity, sink marks, and warpage. We review wall thickness during the DFM stage, run mold-flow analysis to flag likely porosity areas before tooling is cut, and add draft-angle guidance so parts release cleanly.

We catch issues before parts ship. If a lot does fail, the response is structured: a 100% sort to establish the escape rate, containment of nonconforming inventory, root cause analysis before corrective action, and a permanent fix verified to hold. Redstone guarantees every order and will repair, replace, or credit affected parts.