12L14 Free-cutting steel bar


Standards: ASTM A576, ASTM A108

Steel mill: Dongbei Special Steel/Shougang

Size: Round bar (Diameter): 6.35mm – 63mm

Square bar / Flat bar: 3mm to 800mm

Type: Round bar, Square bar, Flat bar

Heat treatment: Cold Finished, unpolished, bright

12L14 is a type of resulfurized and rephosphorized carbon steel for free-cutting and machining applications. The structural steel (automatic Steel) has excellent machinability and lower strength due to the alloying elements like Sulfur and Lead, which can reduce cutting resistance and improve the finish and precision of machined parts. 12L14 steel has been widely used in the manufacture of precision instrument parts, automobile parts and important parts of various kinds of machinery, typical applications including bushings, shafts, inserts, couplings, fittings and etc.


12L14 Steel Equivalent Material

12L14 SUM24L 95MnPb28 Y15Pb


12L14 Chemical Composition

Material C Si Mn P S Pb
12L14 ≤0.15 (≤0.10) 0.85-1.15 0.04-0.09 0.26-0.35 0.15-0.35


12L14 Mechanical Property

Tensile strength (MPa) Yield strength (MPa) Elongation (%) Reduction of area (%) Hardness
370-520 230-310 20-40 35-60 105-155HB



Wiho metals is a fully stocked and leading metal manufacturer, supplier, exporters, distributors of steel mill-product forms such as pipe, tubing, bar and rod. The steel products provide by us shall be fabricated from prime quality raw materials and is fully certifiable to industrial specifications like ASTM and ASME or other relevant standards. Wiho metals supply and stock a large inventory of ASTM 12L14, AISI 12L14, SAE 12L14 (SUM24L / 95MnPb28 /Y15Pb) round bar mechanical parts like instruments and meters, watch parts, automobile, machine tool and other kinds of machines on the use of standard parts, such as bolts, cutting tool, bushing, pin, and the machine screw, plastic molding, surgical and dental equipment, etc. For more information, please contact us or fill in the form below.

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