Bright double chamfered steel rod centerless grinding rod cold drawn 12L14 round steel

Product name: Free cutting steel

Grade: 12L14 free cutting steel

Standard: ASTM A108-1999

Product shape: round rod, hexagonal rod, square rod, shaped material

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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