Executive Standard: JIS G4804-1999
● Chemical Composition:
Carbon C: ≤ 0.13
Si Si: ≤ 0.15
Manganese Mn: 0.70 ~ 1.00
Sulfur S: 0.24 ~ 0.33
Phosphorus P: 0.07 ~ 0.12
Lead Pb: 0.10 ~ 0.35
● 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 drawing) 152 ~ 217HB
● Delivery status: the hot-rolled or cold-drawn state of delivery, delivery status should be indicated in the contract.
