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Corten steel for ship repair

I work in the ship repair. We need to weld double patch on corroded area of gas air heater water washing drain hood and basket casing. Can anybody helps how economical if we use Corten steel. Roughly how much is Corten steel in USD per kg.thanks

James Jimenez
Ship Repair - Singapore
2006

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Local metal pricing and your maintenance costs determine the economics. Since COR-TEN A® has greater corrosion resistance and a yield strength about 1.33x that of mild steel, it is considered more economical if priced < 1.8x of mild steel. Shipping containers and ship hulls are often made of COR-TEN or similar HSLA weathering steels.

In this application (frequently wet, marine environment, frequent surface contact, undesirability of rust stains), COR-TEN requires a protective coating equal to that needed by mild steel. The interval for grit blasting and repainting is reportedly 1.5 to 2x that for mild steel. If welded to mild steel, both need cleaning and coating to prevent galvanic corrosion of the mild steel.

If a high pressure water heater is involved, consult a licensed pressure vessel engineer.

Ken Vlach [deceased]
- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.
Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2006