Metal 1018 Vs 1045 Steel

Both metal 1018 and 1045 steel grades are two grades of carbon steel as defined by the Society of Automotive Engineers (SAE). These classification number describe the components in the steel alloy as well as the properties of the finished metal. Steel alloys can have a wide range of properties, so it is very important to have the correct grade of steel for a particular application. If you want to purchase 1018 steel,1045 plate from China supplier, pls send RFQ to klsteelamber@outlook.com.

1018 Cold Rolled Steel

The steel 1018  has a carbon content of 0.18 percent. It is the most common of the cold-rolled steels. 1018 is better steel for carburized parts, since it produces a harder and more uniform case. 1018 steel also has higher mechanical properties and better machinability due to the cold drawing process. In this process, oversize hot rolled bars, which have been cleaned of scale, are drawn through dies to the required size. Cold drawing increases tensile and yield strength but decreases ductility. Cold drawing also increases torsional strength, surface hardness and wear resistance. Due to size limitations of the cold drawing process, large diameter bars are generally turned and polished, the hot roll rounds usually machine turned, rather than drawn, then abrasively polished. 1018 carbon steel products are available in rounds, flats, squares and hexagons, has a relatively large size selection.
1018 Steel Hardening 
This grade of steel is not normally subjected to hardening and tempering treatments as the hardness obtained from such treatments would not warrant their being performed. Carburizing might be carried out at 1620-1690ºF (880-920ºC,) and carbonitriding at 1470 -1600ºF (800-875ºC.)

1045 Carbon Steel Steel

1045 is a medium-carbon steel, made with 0.45% carbon. Medium-carbon steels are stronger than low-carbon steels, but not as easy to weld, and can be tempered by quenching. Yield strength for 1045 steel is much higher than that of 1018, at 76,900 psi, so if the steel needs to flex and return to its original shape, 1045 steel would be preferred to 1018. The elongation of 1045 steel is 12%, so if you need a piece of steel that would stretch before breaking, 1018 is a better choice than 1045.