It is used for its somewhat greater strength while still having good ductility. It is often used in the case hardened condition.ġ022 has a slightly higher carbon and manganese content plain carbon steel than 1020. Used for simple structural applications such as cold formed fasteners and bolts. It has a good combination of strength and ductility and may be hardened and carburized. It has a nominal carbon content of 0.20% with approximately 0.50% manganese. Often employed in high volume screw machine parts applications, such as shafts, spindles, pins, rods, sprocket assemblies, and an incredibly wide variety of component parts.ġ020 is a commonly used plain carbon steel. Due to its higher manganese content, it can, in thin sections, be hardened to RC 42. Despite its unimpressive mechanical properties, the alloy is easily formed, machined, welded, and fabricated. Used for applications such as cold headed fasteners and bolts.ġ018 is among the most available grades in the world. It is a relatively low strength steel, but it may be quenched and tempered for increased strength. An enormous variety of distinct properties can be created for the steel by substituting these elements in the recipe to increase hardness, strength, or chemical resistance.ġ010 is a plain carbon steel with a nominal 0.10% carbon content. On a strength-to-cost basis, the heat-treated medium carbon steels provide tremendous load carrying ability.Īn iron-based mixture is considered to be an alloy steel when manganese is greater than 1.65%, silicon over 0.5%, copper above 0.6%, or other minimum quantities of alloying elements such as chromium, nickel, molybdenum, vanadium, or tungsten are present. These steels may be heat-treated by austenizing, quenching, and then tempering to improve their mechanical properties. Medium carbon steels have carbon concentrations between 0.25% and 0.60%. In addition, it is machineable, weld-able, and is relatively inexpensive to produce. The low carbon material is relatively soft and weak, but has outstanding ductility and toughness. Low carbon steels generally contain less than 0.25% carbon and cannot be strengthened by heat-treating (strengthening can only be accomplished through cold working).
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