Shenzhen Alu Rapid Prototype Precision Co., Ltd.

No, die cast metal does not rust. Rust specifically refers to the oxidation of iron or steel (ferrous metals), forming iron oxide, which is a reddish-brown corrosion that weakens the material. Die cast metals are typically non-ferrous alloys like zinc, aluminum, or magnesium, which don't contain iron and thus can't develop true rust. 

Key Details:

Common Die Cast Alloys: Most die-cast products (e.g., toy cars, hardware) use zinc-aluminum alloys (like Zamak). These resist rust but can develop white powdery corrosion (e.g., zinc oxide) in humid or salty environments. 

Aluminum Die Castings: Even more resistant, but they might pit or form aluminum oxide under extreme conditions like exposure to acids or high humidity—still not rust. 

Exceptions: If a die-cast item has ferrous parts (e.g., steel axles on toy cars), those could rust, but the main die-cast body won't. 

Vintage or poorly coated pieces might show surface issues mistaken for rust.