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All Categories > Carbon Bars, Plates, Tubing and Structural > Cold Finished Carbon Steels > 12L14-Cold Finished Carbon Steels > 12L14-Cold Finished Carbon Steels-Rounds > Size 7/32  
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Size 7/32, 12L14-Cold Finished Carbon Steels-Rounds



These products represent the latest developments in the field of free machining carbon steels and are the fastest machining steels available.

Leaded Grade A (12L14) is essentially resulphurized and rephosphorized screw machine stock to which lead has been added.

Leaded Grade AX is similar to Grade A, except that an additional machining agent, tellurium, has been added.

Also available are Leaded Grades AY and AZ, which contain Selenium and Bismuth, respectively, as machining agents.

These grades are produced under a number of trade names, among which are the following:

    Leaded Grade A (AISI 12L14): Ledloy A, La-Led, Multicut Leaded
    Leaded Grade AX: Ledloy AX, La-Led X
    Leaded Grade AY: Multicut Leaded Selenium Treated
    Leaded Grade AZ: Mach 5


For more complete data on these steels, ask for special literature.

Stock Lengths 11' to 13'





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

Specifications

Estimated Weight per Foot

.1279 lb

Estimated Weight 12-Ft. Bar

1.535 lb


Analysis
Leaded Grade A (12L14)
Carbon .15 Max.
Manganese .85/1.15
Phosphorus .04/.09
Sulphur.26/.35
Added Element:-

Leaded Grade AX
Carbon .15 Max.
Manganese .85/1.15
Phosphorus.04/.09
Sulphur .26/.35
Added Element: Tellurium

Leaded Grade AY
Carbon .15 Max.
Manganese .85/1.15
Phosphorus.04/.09
Sulphur.26/.35
Added Element: Selenium

Leaded Grade AZ
Carbon.15 Max.
Manganese .85/1.15
Phosphorus.04/.09
Sulphur.26/.3S
Added Element: Bismuth



Applications
Used to maximum advantage for parts where considerable machining is required, such as bushings,, inserts, couplings, and hydraulic hose fittings. With good ductility, these grades are suitable for parts involving bending, crimping, or riveting. .



Mechanical Properties
The following are average values for 1" round and may be considered as representative:
Tensile Strength - 78,000 psi
Yield Strength - 70,000 psi
Elongation in 2" - 15%
Reduction of Area - 50%
Brinell Hardness - 163"



Machinability
Average surface cutting speeds and machinability ratings based on 1212 as 100% are as follows:
    LEADED GRADE A (12L14) 325 feet per minute - 193%
    LEADED GRADES AX, AY, AZ 420 feet per minute - 250%




Weldability
Due to high, sulphur content, these grades are not considered as weldable.



Hardening
Although these grades will respond to conventional treatments, they are not considered case-hardening steels. Better results can be obtained from 1117 or 1018.



 DOWNLOADS 

Tolerance - Cold Finished Carbon Bars
(PDF, 213KB)

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



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