PROPERTIES, IDENTIFICATION, AND HEAT TREATMENT OF …

TC 9-524 Chapter 2 PROPERTIES, IDENTIFICATION, ANDHEAT TREATMENT OF METALSGENERALPURPOSEThis chapter contains basic information pertaining toproperties and identification of metal and heat -treatingprocedures used for metals. For more specific information onmetal and heat -treating techniques, refer to TM CLASSIFICATIONAll metals may be classified as ferrous or nonferrous. Aferrous metal has iron as its main element. A metal is stillconsidered ferrous even if it contains less than 50 percent iron,as long as it contains more iron than any other one metal. Ametal is nonferrous if it contains less iron than any metals include cast iron, steel, and the various steelalloys, The only difference between iron and steel is the carboncontent.

there is no alloying material, it is a “carbon steel.” ... SAE specification numbers are now used less widely than in the past; however, the SAE numerical code is the basic code for ferrous metals Figure 2-9). The SAE system is based on the use of four-or five digit numbers.

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  Specification, Treatment, Material, Heat, Heat treatment, Alloying, Alloying material

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