Steel name: Free cutting structural steel
Brand: Y15Pb
Execution standard: GB/T 8731-1988
Density: 7.85 g/cm3;
Characteristics and Applications
Y15Pb lead containing free cutting steel has good machinability, while Y15Pb has better machinability than Y12Pb. There is no directional performance, and it has high mechanical properties, commonly used in the manufacture of important mechanical parts, precision instrument parts, etc.
Chemical composition (%)
C :0.10～0.18
Si :0≤0.15
Mn:0.80～1.20
P :0.05～0.10
S :0.23～0.33
Pb:0.15～0.35
mechanical property 
Tensile strength σ b (MPa): (hot-rolled) 390-540; (Cold drawn) When the thickness or diameter of steel is 8-20: 530-755;> 20-30 hours: 510-735 hours;> 30 o'clock: 490-685
Elongation rate δ 5 (%): (hot rolling) ≥ 22; (Cold rolling) ≥ 7.0
Shrinkage rate of cross-section (%): (hot rolling) ≥ 36
Hardness: (Hot rolled) ≤ 170HB; (Cold drawn steel) 152-217HB
1. The company has established long-term and stable cooperative relationships with multiple well-known steel mills at home and abroad, all of which provide original material certification
2. Wholesale and retail, with favorable prices, superior quality (large quantities are preferred), and timely and fast delivery
3. Wide channels, sufficient supply of goods, and business scope covering all parts of the country, can meet the needs of customers in various regions
Sincerely welcome new and old customers from all walks of life to call and inquire about and negotiate business at any time. Our high-quality products and reasonable prices will definitely meet your requirements!
Welcome new and old customers to call for consultation and negotiation.