Powder coating stainless steel gives products a polished, professional finish that improves durability and aesthetics. However, achieving optimal results requires following industry best practices to avoid complications in the detailing process. For guidance and support, follow these do’s and don'ts of powder coating stainless steel as you put the finishing touches on your products.

Do Properly Prepare the Surface

The durability of a powder coating depends on how well you prepare the stainless-steel surface because a poor surface could lead to chipping or peeling down the line. Before using a coating on the product, clean the material thoroughly to remove dirt, grease, and contaminants. Abrasive blasting or using a chemical etchant can also create a slightly rough texture to give the powder coating a stronger surface to bond to.

Don’t Skip Applying a Primer

While stainless steel resists corrosion naturally, its smooth surface can make it tricky for powder coating to adhere. Always use a primer designed for stainless steel. A high-quality primer builds a solid foundation for the powder coating and improves adhesion to boost the coating’s resistance to wear and environmental factors.

Do Choose the Right Powder Coating Material

Depending on your product’s needs, you may need a specific material for proper adhesion. Polyester-based powders tend to be the best choice for outdoor applications because they offer excellent UV resistance and durability.

For industrial purposes, hybrid powders like epoxy-polyester blends provide a fine balance of chemical resistance and mechanical strength. Selecting the right material guarantees your products meet performance expectations.

Don’t Overlook Curing Requirements

Proper curing in a powder coating oven is one of the do’s of powder coating stainless steel. Always follow the curing temperature and time outlined for the powder material as failure to do so could create an uneven coat or reduced longevity. Use calibrated equipment to monitor oven temperatures and avoid overheating or under-curing the product.

Do Test Adhesion After Coating

Testing adhesion helps verify the strength of your powder coating. Methods like crosshatch or pull-off adhesion testing can identify weak spots before deployment. Noticing early warning signs allows you to make fine adjustments and prevents costly returns or repairs down the line.

Don’t Neglect Environmental Considerations

Stainless steel’s nonporous nature holds up well against environmental factors, but the wrong powder or inadequate coating can invite corrosion. Consider using a corrosion-resistant topcoat for added protection, especially in coastal or industrial settings. Additionally, avoid exposing freshly coated projects to moisture or extreme temperatures until fully cured.

Many products use powder coating for a practical and aesthetically pleasing exterior. Polymer Molding, for instance, provides plastic pipe plugs that secure plumbing systems with its durable powder-coated functions. For more information regarding the benefits of these products, get in touch with our team today!