1117 material is low-carbon high-manganese steel. It posses much of the machining quality of 1212 Screw Stock but with improved mechanical properties. Bars are produced from special quality hot rolled bars.

1117 is available as a leaded steel (11L17, which Windsor Steel Corporation doesn’t carry in stock, but can be ordered) in certain sizes. The addition of 0.15 / 0.35 % lead improves free-machining characteristics without sacrificing carburizing properties.

1117 is used in automatic screw machines for manufacturing numerous parts that require considerable machining and close tolerances, along with a smooth finish. It may be bent or formed where such cold working operations are not too severe. It is especially suitable for carburized parts requiring soft core and high surface hardness, such as gears, pinions, worms, king pins, ratchets, dogs, etc.

1117 is not readily wielded due to high sulphur content. Gas or arc welding may be used providing joints are preheated. To develop equivalent strength in a weld, a low alloy filler is recommended. Stress relieving after welding is also recommended.

1117 will respond to any of the standard carburizing methods and subsequent heat treatments. For a hard case and tough core, the following heat treatment is suggested: Carburize at 1650-1700 0°F for approximately 8 hours. Cool in box and reheat to 1400-1450°F. Quench in water and draw at 300-350°F.