Centerless grinding rod size 12L14 grinding rod light circle

Product name: Free cutting steel

Grade: 12L14 free cutting steel

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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