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1018 Hot Rolled:

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Disclaimer: The content of this page is for general information only and is not to be used for engineering or design. The content of this material specification page was compiled from available public sources and authorities on material properties. Although we believe the information to be corrrect, Metal Stock, Inc. is not responsible for the accuracy of any of the material specifications and only presents this data as general information for our customers.

1018 hot rolled is a better steel for carburized parts since it produces a harder and more uniform case. It also has higher mechanical properties, including Brinell hardness and better machining characteristics. In its production, special manufacturing controls are used for chemical composition, heating, rolling, and surface preparation. This results in a quality product suitable for applications requiring forging, heat treating, cold drawing, machining, drilling, and welding.

 

General Information about 1018 Hot Rolled:


APPLICATIONS:

1018 hot rolled is a very good carburizing steel, it is especially suitable for parts requiring high surface hardness with a relatively soft core, such as gears and pinions, worms, ratchets, dogs, oil tool slips, pins, chain pins, liners, studs, anchor pins, special bolts, tie rods, machinery parts, etc

MACHINING AND WELDING:

1018 hot rolled's machinability is rated at 78% of B1112. Average cutting speed is 130 ft/min. This grade is easily welded by all welding processes including gas, air, and submerges arc, and the resultant welds and joints are of extremely high quality. Preheat and post-weld heating is generally not necessary.

HEAT TREATING - Forging, Normalizing, and Annealing:

1018 hot rolled will respond to any carburizing method and subsequent heat treatments. For a hard case and tough core, the following heat treatment is suggested:

Carburize at 1650° - 1700°F for approximately eight hours; cool in oven and reheat to 1400° - 1450°F.
Quench in water and draw at 300° - 350°F. Carburizing depth is typically .060-.070".

Forging: Heat to 2150° - 2250°F.

Normalizing: Heat to 1650° - 2250°F. Cool in air.

Annealing: Heat to 1550° - 1650°F. Cool in furnace.



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