ASTM AISI 12L13 12L14 12L15 Free Cutting Steel bar

12L13 12L14 12L15 are free cutting structural steel. Free cutting steel is a type of steel that is easy to cut (such as turning, milling, pulling, planing, drilling, etc.), also known as automatic machine tool processing steel, abbreviated as automatic steel. is easy cutting structural steel, easy cutting steel is easy to be (turning, milling, drawing, planing, drilling, etc.) cutting processing steel, also known as automatic machine tool processing steel, referred to as automatic steel. It is produced to adapt to machining automation and flow line production.

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Standard: ASTM A29/A29M-04

12L13 12L14 12L15 belong to lead sulfur composite free cutting structural steel. In the lead free cutting steel, the lead is distributed in the steel with tiny simple metal particles and does not solidify in the steel. During the cutting process, strong friction occurs between the tool and the work piece, making the lead particles in the steel melt out, thus playing a lubricating role to improve the cutting performance of the steel, making the steel chips finely broken, reducing tool wear, and ultimately extending the tool life. Compared with the steel without lead, the cutting performance of the steel with lead can be improved by 20~50%, while the mechanical properties and heat treatment properties remain basically unchanged, and the cold and hot working properties and weld ability are not affected. Lead free cutting steel has been widely used in the manufacturing of precision instrument parts, automotive parts, and important parts of various machinery. However, the contact fatigue of lead free cutting steel is low, so it is not suitable for gears, bearings and other components that bear high fatigue stress loads.

Parameters

Size	Round Bar	Dia 6-1200mm
	Plate/Flat/Block	Thickness: 6mm-500mm
		Width: 20mm-1000mm
Heat treatment	Normalized ; Annealed ; Quenched ; Tempered
Surface condition	Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery condition	Forged; Hot rolled; Cold drawn
Test	Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
Application	12L13 12L14 12L15 free-cutting steel is mainly used for making instruments, watches, parts, automobiles, machine tools and other machines with small stress and strict requirements on size and finish. Standard parts with strict requirements for dimensional accuracy and smoothness and relatively low requirements for mechanical properties, such as gear, shaft, bolt, valve, bushing, pin, pipe joint, spring seat and machine tool lead screw, plastic molding die, surgical and dental procedures tools, etc.

Chemical Composition (%)
Grade	C	Si	Mn	P	S	Pb
12L13	≤0.13	≤0.02	0.70-1.00	0.07-0.12	0.24-0.33	0.15-0.35
12L14	≤0.15	≤0.02	0.85-1.15	0.04-0.09	0.26-0.35	0.15-0.35
12L15	≤0.09	≤0.02	0.75-1.05	0.04-0.09	0.26-0.35	0.15-0.35

Equal different standards
AISI/ASTM	GB	EN10087	JIS	DIN
12L13	Y08Pb	11SMnPb30	UM23L
12L14	Y12Pb	11SMnPb37	SUM24L	1.0718
12L15	Y15Pb	-	SUM24L

Package&Shipping

By bundles, each bundle weight under 3 tons, for small outer
Diameter round bar, each bundle with 4 - 8 steel strips.
20 feet container contains dimension, length under 6000mm
40 feet container contains dimension, length under 12000mm
By bulk vessel, Freight charge is low by bulk cargo, and large
Heavy sizes can not be loaded into containers can shipping by bulk cargo