Y15Pb leaded free cutting steel, is cutting good, Y15Pb with Y12Pb, machinability than Y12Pb be better. There is no direction on the performance, and high mechanical properties, commonly used in the manufacture of the more important machine parts, precision instrument parts.
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
Product Standard: Y15Pb (GB / T 8731-1988) ω /%
Mechanical properties:
Tensile strength σb (MPa): (hot) 390 - 540; (cold drawn) steel thickness or diameter of 8 to 20 hours: 530 ~ 755;> 20 to 30 hours: 510 ~ 735;> 30 hours: 490 ~ 685
Elongation δ5 (%):( hot) ≥ 22; (cold) ≥ 7.0
Reduction of ψ (%):( hot) ≥ 36
Hardness: (hot) ≤ 170HB; (cold-drawn steel) 152 ~ 217HB
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
Product Standard: Y15Pb (GB / T 8731-1988) ω /%
Mechanical properties:
Tensile strength σb (MPa): (hot) 390 - 540; (cold drawn) steel thickness or diameter of 8 to 20 hours: 530 ~ 755;> 20 to 30 hours: 510 ~ 735;> 30 hours: 490 ~ 685
Elongation δ5 (%):( hot) ≥ 22; (cold) ≥ 7.0
Reduction of ψ (%):( hot) ≥ 36
Hardness: (hot) ≤ 170HB; (cold-drawn steel) 152 ~ 217HB
