Material Name: cutting structural steel
Grade: Y15Pb
Standard: GB / T 8731-1988
● Chemical Composition:
Carbon C: 0.10 ~ 0.18,
Si Si: ≤0.15,
Mn Mn: 0.80 ~ 1.20
Sulfur S: 0.23 ~ 0.33,
P P: 0.05 ~ 0.10,
Lead Pb: 0.15 ~ 0.35
● Mechanical Properties:
Tensile strength σb (MPa) :( hot) 390 to 540; (cold drawn) steel thickness or diameter of 8 to 20 o'clock: 530 to 755;> 20 to 30: 510 - 735;> 30: 490 - 685
Elongation δ5 (%) :( hot rolled) ≥22; (rolled) ≥7.0
Reduction of area ψ (%) :( hot rolled) ≥36
Hardness :( hot) ≤170HB; (cold drawn steel) 152 ~ 217HB
● Heat treatment and microstructure specifications:
● Delivery status: hot-rolled or cold-drawn delivery, the delivery status should be specified in the contract. |
