Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Yes, cast metal can be chromed. This is commonly done through electroplating processes, where a thin layer of chromium is deposited onto the surface for corrosion resistance, aesthetics, or hardness. However, due to the porous nature of castings (like those made from iron, aluminum, zinc, or pot metal), preparation is key to ensure adhesion and a smooth finish. This typically involves cleaning, etching, and applying intermediate layers such as copper and nickel before the chrome.

Key Considerations and Examples:

Cast Iron: Hard chrome plating is widely used on cast iron parts, like bores or engine components, to improve wear resistance. The process requires a clean surface, warm pre-plating, and conforming anodes to avoid defects.

Die Cast Zinc (Pot Metal): Common in automotive trim or hardware; it involves a cyanide copper flash, followed by copper, nickel, and chrome layers, then buffing.

Aluminum Castings: Not directly chromable—needs an intermediate copper strike layer first.

Die Cast Toys/Parts: Hot Wheels-style die cast cars are routinely copper-nickel-chrome plated for shine.

Challenges like porosity can lead to pitting if not addressed, but professional platers handle this routinely.