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Materials of construction for secondary marine structures must exhibit an optimum combination of saltwater corrosion resistance, mechanical reliability, high strength-to- weight ratio, reliable fabricability and maintainability, and low life cycle cost. To minimize life cycle costs, design and materials selection must include engineering for reduced maintenance.

  Titanium provides a unique combination of these features. Titanium exhibits:


  1. Excellent corrosion resistance in all sea water environments

  2. Non-toxicity to people, aquatic life , or the surrounding environment

  3. Strength-to-weight ratio unmatched by any other common engineering metal

  4. Structural stiffness comparable to the best other common engineering metals

  5. Non-magnetic in all alloys and forms

  6. Simple and reliable forming, fabrication, and welding processes

  7. Reliable near net shape casting and forging processes

  8. Reliable commercial availability in sheet, plate, tube, pipe, and bar form

  9. Established industry standards worldwide



The greatest impediment to the increased use of titanium in marine structures is a lingering, age-old misconception that titanium is an expensive, exotic, difficult to process metal. Undeniably titanium is more expensive than most steel and aluminum alloys. It is cost comparable to many copper alloys and is lower cost than many of the nickel alloys. The key to cost effective use of titanium is to utilize its unique properties and characteristics in the design rather than to simply substitute it for another metal.