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Clean-S Treatment for metal surfaces

Clean-S Treatment for metal surfaces

Clean-S processing is a surface treatment developed by Showa Denko K.K. in 1984 to improve corrosion and abrasion-resistance of metal surfaces. Extensive research over the years has improved the coating performance and many types of Clean-S are available today. Clean-S is widely used for parts and devices used in semiconductor manufacturing processes, and general industrial parts. Clean-S was originally developed aiming at adding corrosion-resistance on corrosive gases of general-use metal materials including SUS and aluminum. It also have other characteristics such as abrasion-resistance in parts of stirring machines.

Corrosion-resistance data at room temperature (HCL, HBr, HF)

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Micro Vickers hardness

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Clean-S types and characteristics

Type Characteristics Intended use
H type Crrosiveness to corrosive gases Molecular pump, exhaust gas piping, various anti-corrosion pulp
A type High hardness Abrasion-resistance Dry pump, injection molding machine screw parts, Sliding parts, molds
AF type Fluorine passivation treatment.
A further improvement of H type
Chamber accessory parts, L-shaped vacuum valve, gate valve, exhaust gas piping, various valves, sea-water/salt damage specification parts