Conversion coating is a method of metal surface treatment designed to protect against corrosion and enhance durability. The conversion coat process results in the chosen coating being chemically bonded to the surface to which it is applied.

While chrome conversion coating has been a standard for many years, some within the industry have begun to frown upon the environmental effects of this process. Thus, companies have been hard at work providing coating alternatives that are less hazardous but still provide an ideal level of protection and durability. A few alternatives to consider include:

1. Use versatile chromate conversion coating, which can be applied with earth friendly processes.

2. Employ aluminum conversion coating for finished products that will remain free of corrosion and wear.

3. Keep rust at bay with galvanizing conversion treatments.

Action Steps
The best contacts and resources to help you get it done

Try chromate conversion coating for protection and preparation

Chromate conversion coating is considered ideal for corrosion protection, but is also valued as a treatment that creates stronger bonds between metal and paint or primer. This is the middle step that is designed to extend the life of not only the paint or coating job, but also the metal itself.

I recommend: Pioneer Metal Finishing specializes in chromate conversion coating for metal parts. They also offer hexavalent chromium-free conversion coating, which is safer for the environment. Dav-Tech Plating's chromate conversion facility features industrial-sized tanks and baths which allows for chromate finishing projects of all sizes. This company promises a conversion coat with minimal electrical resistance and maximum bonding quality. Dav-Tech also offers anodize conversion coating services.

Consider aluminum conversion coating and anodizing for maximum protection

If corrosion resistance and durability are the ultimate goals for surface treatment, aluminum conversion coating is an ideal solution. This process is durable and versatile. Standard anodizing creates an effective shield, while the hard coat process can leave a durable and completely smooth surface.

I recommend: Alpha Metal Finishing provides a variety of aluminum conversion coating services. Dragon Anodizing is a finishing company that specializes in the field of aluminum conversion coatings. Among the vast selection of services available are clear and color anodizing, hard coat anodizing (regular or black) and teflon sealing.

Prevent rust damage with galvanizing conversion

Galvanized metal fares better than untreated metal in the face of the elements. Galvanizing conversion gives these surfaces a shield against rust, thereby extending the life of the treated metal.

I recommend: West Coast Metal Finishing offers both electro and hot-dip galvanizing treatments, each designed to protect metal surfaces from the elements. Other services provided include zinc plating. Dyna Burr offers several metal treatment and finishing services with a specialty in plating and galvanizing.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Speak with a chromate conversion coatings consultant to find out which bonds and treatments offer the best in protection and environmental consideration.