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Saved by uncleflo on February 9th, 2022.
Boat Design . Net - Connecting Boat Designers and Boatbuilders on the Net. Boat Design and Boat Building Projects, Plans, Software, Books, Concepts, Reviews, and Resources. Discussion forums: boat design, boat building, powerboats, sailboats, multihulls, design software, education, services and employment. Join in the boat design & boatbuilding discussion forums today! A gallery of professional and student design work, projects in process, power and sail. Please post your boat design & boat building images for everyone to see. A marine design directory and search engine. Boat plans, designers, boatbuilders, materials, powerboats, catamarans, propulsion, sailboats, multihulls, shipyards, software, books, & resources. A site connecting boat builders and designers, showcasing innovations in design and construction and providing access to articles, resources, software, and inspirational sites.
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Saved by uncleflo on December 20th, 2019.
Aluminum alloys are lightweight and corrosion-resistant in marine environments, making the superior material for use in the shipbuilding industry. There are two aspects that make general aluminum welding different from welding steel in the shipbuilding industry, and both are related to the fact that much of the welding is performed outdoors: Both aspects will be discussed in more detail on the next few pages. Know Which Aluminum Alloy You Are WeldingIt isn’t enough to know that you are welding aluminum. Welding professionals have to know which alloy is about to be welded, and they have to know the correct filler metal to use. The most common alloys used in shipbuilding are the Al-Mg 5XXX sheet alloys and the Al-Mg-Si 6XXX extrusion alloys, primarily because of their excellent resistance to corrosion.
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Saved by uncleflo on December 19th, 2019.
When a metal is exposed to underwater or wet environments, marine grade metals may be necessary to prevent the material from failing under the conditions. To be considered a marine grade, the material must be able to resist corrosive effects that are common in a water environment. To achieve this, special alloying elements are added to these grades in order to defend against corrosion. Marine grades can be found in most of the metal types, which include aluminium, stainless steel, brass, bronze, copper and carbon steel. Most carbon steel is not well-suited for marine environments, however, there are several marine grade carbon steels available. AH36, DH36, and EH36 are all examples of commonly used marine grade carbon steels approved by the American Bureau of Shipping. These grades will have slightly more alloying elements such as manganese and chromium compared to their ASTM grade counterparts, which helps achieve higher strength and more corrosion resistance. There are also marine grades of engineering steel as well. Grades MD, ME, MF, MG, and others can provide the strength that normal alloy steel is known for, and have also been approved by the American Bureau of Shipping for use in shipbuilding applications.
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