Is it Possible to Powder Coat Chrome?

At Maldon Shot Blasting, we want to clarify the process of powder coating chrome:

Powder coating is widely used to coat various parts, protecting them from corrosion and rust. This process involves applying a dry powder to a metal surface, which is then cured with heat to form a long-lasting protective layer.

While powder coating is particularly common in the automotive industry, especially for motorcycles, many ask whether it’s possible to powder coat chrome. The challenge lies in the fact that chrome has a very smooth surface, making it difficult for powder coatings to adhere without proper preparation.

Here are some important points to consider if you’re thinking about powder–coating chrome parts:

1. Preparation is Key: You cannot powder coat over chrome without proper prep work if you want a durable, high-quality finish. Untreated chrome will not allow powder coating to adhere effectively. The chrome must be removed first, either by a professional chrome plating company or, in the case of low-grade chrome, by blast cleaning. While heavy chrome (like that used on Harley bikes) can be etched through blasting, there’s a risk of damaging the surface and creating ridges. It’s safest to have the chrome removed by a professional.

2. Chrome-Like Powder Coatings: There are powder coatings available that mimic the appearance of chrome once applied. These coatings cure to a very reflective finish, although they are not actually chrome. At Maldon Shot Blasting, we offer high-quality chrome effect powder that is extremely reflective. However, this powder is not UV stable and can fade if exposed to sunlight and pollutants. To help prevent fading, a good quality diamond clear lacquer should be applied, this however will dul down the chrome effect.

3. Blast Cleaning is Essential: Before applying powder coating, it’s crucial to blast clean the parts to remove any residue. Some chrome may resist removal through blasting, and attempting to break through can damage the underlying metal, especially on heavy chrome.

4. Importance of Pretreatment: Proper pretreatment is essential for successful powder coating. Without it, the coating may begin to flake off shortly after application. Ensure that the shop you choose uses strict pretreatment measures to avoid this issue.

5. Temperature Considerations: While some chrome parts may be powder coated after careful pretreatment, others should not be coated at all. Since chrome is typically applied at lower temperatures, parts that cannot withstand thermal curing temperatures of around 180 centigrade should not be coated. In some cases, sensitive areas can be protected using high-temperature masking products, but it’s best to consult professionals regarding this.

6. Cautions: If a company claims that they can powder coat over chrome without risks, we advise you to proceed with caution.

Additional Considerations:

– Poor quality, thinly plated chrome is easier to remove via blasting.

– Rust can sometimes exist beneath the chrome plating, leading to corrosion and deep pitting in the substrate.

– Reviews and blogs from self-proclaimed experts often promote the idea that clean chrome can be coated directly, which is misleading.

Finally:

At Maldon Shot Blasting, we typically offer a five-year anti-corrosion warranty. However, we must consider the long-term outcomes, especially on items that are heavily corroded. Unfortunately, we can’t turn poorly maintained items into something of a high-quality finish no matter the process.