Bright double chamfer 12L14 Easy Cut steel Moon Junction polished 12L14 easy cut steel

Product name: Free cutting steel

Grade: 12L14 free cutting steel

Standard: ASTM A108-1999

Product process: polishing, grinding

Free cutting steel for use

Used as turning steel, widely used in structural parts. Commonly used in the manufacture of more important mechanical parts, parts such as machine screws, self-tapping screws, bolts, nuts, double heads, headless parts, hex bolts and so on.

Chemical composition:

C: ≤0.15

Silicon Si: protocol

Manganese Mn: 0.85 ~ 1.15

P: 0.04 ~ 0.09

Sulfur S: 0.26 ~ 0.35

Lead Pb: 0.15 ~ 0.35

Mechanical property

Tensile strength σb (MPa) : (hot rolled)390 ~ 540;

(cold drawing) diameter 8 ~ 20 :530 ~ 755; >20 ~ 30 hours :510 ~ 735; >30 hours :490 ~ 685

Elongation δ5 (%) : (hot rolling)≥22; (Cold rolled)≥7.0

Section shrinkage (%) : (hot rolling)≥36

Hardness: (hot rolling)≤170HB; (cold drawn steel) 152-217HB

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