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Corrosion resistant plating for 950 deg F turbochargers

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Good morning,

We are manufacturers and distributors of special stainless steel and high temp. alloy fasteners. We are in the process of quoting a M4 x 10 mm screw to a customer for a turbocharger applications, screws are exposed to peak temperatures of 950 F. Customer is concerned about corrosion. Can you recommend a plating or coating for a screw made from B16 steel, offering reliable corrosion protection at such temperatures and if so what would be a price range for such platings or coatings (annual quantity 2,000,000). Thank you in advance for your help.

Regards,

Uwe Schilli
Fasteners Manufacturer and Distributor - Pendergrass, Georgia, USA

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