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What is the best powder coating for my application?

Q. Our company needs to coat a 302 stainless steel spring roughly 1" wide and 1.25" long. The springs will be in constant contact of hot (up to 200 °F) and cold water. We would like to powder coat the springs. What is the best type of powder coating, nylon, epoxy, polyester, etc. The springs will be flexing roughly 1/2". Please reply.

eric fontaine
- Attleboro, Massachusetts usa

A. The absence of answers here kinda makes me think this is a good question. I'd contact the FUNCTIONAL coatings division of one of the big coatings houses like Ferro, Dupont, Lilly, or PPG for information about the kind of coatings they sell for use on pipelines. These coatings aren't very pretty, but they are incredibly tough, and should fit your application, if the flexibility is not a problem. Good Luck!

Jeff Watson
Jeff Watson
- Pearland, Texas

A. Dear sir, you coat the nylon 11/12 coatings from Rilson, ELF ATOCHEM. This polyamide based powder is very suitable to your problem. This is a flexible coating, tough hardness, well corrosion and chemical resistance. Heat resistance up to 120 °C. It's a specialty coating for springs and flexible applications. The process by electrostatic powder coating and fluidized bed system. BEST LUCK

kalyan dhakane
Kalyan Dhakane
Mumbai, India

Ed. note: To the degree practical, please keep responses technically focused rather than on brands or sources. Thank you.

Q. I would be grateful if you could send me information on supplier for Rilson nylon coating in France.

Henry Kwan
- Hong Kong

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