Ask the Expert: What Are the Benefits of Chrome Plating vs. Other Coating Types?

In polymer processing, the extrusion die surface is more than just a protective finish – it's an important feature that affects performance. The surface it sits on has a big impact on how smoothly polymer moves through the die, how cleanly it releases, how much material builds up over time, and how consistently the process delivers a quality product.

Because your process deserves peak performance without compromise. 

Chrome plating makes the surface of the molten polymer less sticky, so it doesn't stick, drag or build up inside the die. In Nordson's surface comparison, chrome is shown to release materials around three times better than stainless steel and six times better than nickel coating. This makes it a good choice when it is important that materials flow smoothly and are released cleanly to make sure that production performs well.  

Every extrusion process begins with high expectations—smooth flow, clean release, and stable output. At startup, many surfaces appear to perform well. The real test comes as conditions change. 

As throughput varies, materials shift, and run times extend, the interaction between polymer and metal determines whether the process stays predictable or starts demanding attention. At that point, the die surface is no longer just a finish—it becomes a decisive driver of performance.

In this case, chrome continues to stand out. It releases well, so the material doesn't stick to the surface, which helps to keep things stable when conditions change. But release alone is not enough if it cannot be kept up. Over time, surface wear can change how a die behaves, either slowly or quickly.  

Chrome is valued for its combination of strong release characteristics with high resistance to scratching, corrosion, and surface degradation. The wear-resistant properties of chrome plating help extend surface life while maintaining performance and product quality.

For processors, these benefits can be measured: fewer interruptions, reduced buildup, and greater confidence that the process at the end of the run is the same as the process at the beginning. It also shows that the surface is reliable in situations where production needs to be flexible, like changing rates, switching products, or extending campaign length. 

Chrome is important because it protects what matters most in production. This means more than just the final product; it also protects control, reliability, and confidence in the process itself.

Have questions on how chrome plating can improve your process? Contact Dominic.