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All Categories > Carbon Bars, Plates, Tubing and Structural > Cold Finished Carbon Steels > 11L17-Cold Finished Carbon Steels > 11L17-(Leaded) Cold Finished Carbon Steels-Rounds > Item # 7/16  
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Item # 7/16, 11L17-(Leaded) Cold Finished Carbon Steels-Rounds



This grade is low-carbon high-manganese steel. It possesses much of the machining quality of 1212 Screw Stock but with improved mechanical properties. This grade also has excellent carburizing properties. Bars are produced from special quality hot rolled bars.
1117 is available as a leaded steel (11L17) in certain sizes. The addition of .15/.35 per cent lead improves free-machining characteristics without sacrificing carburizing properties.

Stock Lengths: 12' and 20' Approx.

Cold Finished Bars
ASTM A108 - UNS G11170
Color Marking





Specifications  · Analysis  · Applications  · Mechanical Properties  · Machinability  · Weldability  · Hardening

Specifications

Estimated Weight per Foot

.5116 lb

Estimated Weight 12-Ft. Bar

6.139 lb


Analysis
Carbon .14/.20
Manganese 1.00/1.30
Phosphorus .04 Max.
Sulphur .08/.13 Max.



Applications
This steel is used in automatic screw machines for manufacturing numerous parts requiring 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.



Mechanical Properties
The following are average values for 1" cold drawn round and may be considered as representative of the grade:
Tensile Strength - 80,000 psi
Yield Strength - 70,000 psi
Elongation in 2" - 16%
Reduction of Area - 50%
Brinell Hardness - 156



Machinability
1117 has a machinability rating of 91%, based on 1212 as 100%. Average surface cutting speed is 150 feet per minute. 11L17 will machine at approximately 170 surface feet per minute.



Weldability
This grade is not readily welded 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. The grade of welding rod to be used depends on the thickness of section, design, service requirements, etc.



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



 DOWNLOADS 

Tolerance - Cold Finished Carbon Bars
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Tolerances - Carbon and Alloy Bars
(PDF, 358KB)



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