Introduction of 12L14 free cutting steel:
12L14 is a free-cutting structural steel. It is easy to cut ,turning,milling, drawing, planing, drilling, etc. 12L14 is also called automatic machine tool processed steel, or free cutting steel. 12L14 steel is suitable for mechanical processing automated production lines.
AISI 12l14 steel mechanical properties:
- Tensile strength σb (MPa): 380-460
- Hardness: 100-150 HBW
- Reduction of area ψ(%): 35-60
- Elongation Δ5 (%): 20-40

Main uses of 12L14 steel
12l14 material is mainly used in the production of instruments, watch parts, automobiles, machine tools and other various machines that are less stressed and have strict requirements on size and finish. They have strict requirements on dimensional accuracy and finish, but relatively low requirements on mechanical properties. Low standard parts, such as gears, shafts, bolts, valves, bushings, pins, pipe joints, spring seat cushions and machine tool screws, plastic molding molds, surgical and dental appliances, etc.
- 12L14 Free Cutting Steel Chemical Composition:
C: 0.15 max
Mn:0.85~1.15
S:0.26~0.35
P:0.04~0.09
Pb:0.15~0.35
- Equivalent Grades:
US grade: AISI 12L14
Japanese grade: SUM24L
French grade: S250PB
German grade: 95MNPB28
International grade: 11SMNPB30
Chinese grade: Y15PB

01
Good Processing Performance
12L14 steel has the characteristics of smooth cutting, excellent material, stable processing, good metallographic structure, stable chemical composition, small deviation, clean steel purity, low inclusion content, and not easy to damage the tool; it is very easy to cut on a lathe. Tool service life and production efficiency are both increased by 40%
02
Good Electroplating Performance
Cutting is very easy; deep holes can be drilled, deep grooves can be milled, etc.; the processing efficiency can be greatly improved compared to ordinary steel; the product has good electroplating performance and can replace copper products, greatly reducing product costs
03
Good Smoothness
The surface finish of the workpiece after turning is good
04
Environmental Protection
Complies with EU SGS environmental certification standards and passed Swiss environmental certification. Products can be exported to machinery and equipment: woodworking machinery, ceramic machinery, paper machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses, etc.




