One part saw the inside of the annealing oven, the other skipped that step, and the difference shows up later as warpage, fit issues, or rejected assemblies.

We work with materials that must perform flawlessly in demanding automotive environments, where even the smallest dimensional deviation can affect assembly, function, or long‑term durability. One of the key processes we rely on to achieve this level of consistency is plastic annealing.

Plastic annealing is a controlled thermal process that helps the material “relax” before it enters full production. This controlled heating and cooling cycle relieves internal stresses that naturally develop during molding, machining, or rapid temperature changes.

This matters because internal stress is one of the leading causes of warpage, a defect that can distort the shape of a part and compromise its performance. When a component warps, it may no longer fit correctly, seal properly, or maintain the tolerances required by automotive OEMs.

When every millimeter matters, plastic annealing helps us ensure that the parts we deliver are not only accurate on day one, but remain stable throughout their entire lifecycle!