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| Classificaiton Industrial alloys are classed as ferrous (having an iron base) and nonferrous; the ferrous alloys are the larger group. The most important ferrous alloys are those made with carbon. When the carbon content is less than .13 percent by weight, the alloys are known as steels. The terms, alloy steel and special steel, are descriptive of steels with relatively large amounts of chromium and nickel. An example of such an alloy is stainless steel. Aircraft industry requirements have helped spur the development of important nonferrous lightweight alloys such as aluminum and magnesium. With increased flight, speed, and payload, much use is being made of titanium and titanium-based alloys. These have much higher melting points and strength-to-weight ratios than aluminum and its alloys.
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| Curriculum design: David L. Heiserman Publisher: SweetHaven Publishing Services |
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