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  2. Free machining steel - Wikipedia

    en.wikipedia.org/wiki/Free_machining_steel

    Free machining steel costs 15 to 20% more than standard steel, but this higher cost is offset by increased machining speeds, larger cuts, and longer tool life. [1] The disadvantages of free machining steel are: ductility is decreased; impact resistance is reduced; copper-based brazed joints suffer from embrittlement with bismuth free machining ...

  3. SAE steel grades - Wikipedia

    en.wikipedia.org/wiki/SAE_steel_grades

    The SAE steel grades system is a standard alloy numbering system ... 12L14 is a common grade that is 1214 with lead added for ... Type 440F—a free-machining variant ...

  4. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    Steel classification according to EN 10027-2.Free searchable database "European steel and alloy grades" Comparison of various steel standards Archived 2019-04-27 at the Wayback Machine Comparison of various tool steel standards

  5. Machinability - Wikipedia

    en.wikipedia.org/wiki/Machinability

    Machinability is the ease with which a metal can be cut permitting the removal of the material with a satisfactory finish at low cost. [1] Materials with good machinability (free machining materials) require little power to cut, can be cut quickly, easily obtain a good finish, and do not cause significant wear on the tooling.

  6. Speeds and feeds - Wikipedia

    en.wikipedia.org/wiki/Speeds_and_feeds

    Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

  7. Category:Steels - Wikipedia

    en.wikipedia.org/wiki/Category:Steels

    Specific topics related to the range of Steels and steel alloys Subcategories. ... Free machining steel; G. Galvanized steel; H. Hardened steel; Heavy melting steel;

  8. Spark testing - Wikipedia

    en.wikipedia.org/wiki/Spark_testing

    Spark testing of tool steel Spark testing of mild steel. Spark testing is a method of determining the general classification of ferrous materials. It normally entails taking a piece of metal, usually scrap, and applying it to a grinding wheel in order to observe the sparks emitted. [1]

  9. Carbonitriding - Wikipedia

    en.wikipedia.org/wiki/Carbonitriding

    Carbonitriding is often applied to inexpensive, easily machined low carbon steel to impart the surface properties of more expensive and difficult to work grades of steel. [1] Surface hardness of carbonitrided parts ranges from 55 to 62 HRC.

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