11SMnPb30 (1.0718) structural steel cutting and 15SMn13 similar characteristics, but it can be better than workability. 11SMnPb30 for standard parts manufacturing unimportant. ● Chemical Composition: Carbon C: ≤0.14 Si Si: 0.05 Max Manganese Mn: 0.90 ~ 1.30 Sulfur S: 0.27 ~ 0.33 P P: 0.11 Max Lead Pb: 0.20 ~ 0.35 ● Mechanical Properties: Tensile strength σb (MPa) :( Hot-rolled) 390 to 540; (cold drawn) steel thickness or diameter of 8 to 20: 530 ~ 755;> 20 to 30: 510 to 735;> 30: 490 ~ 685 Elongation δ5 (%) :( hot-rolled) ≥22; (cold rolled) ≥7.0 section shrinkage ψ (%) :( hot rolled) ≥36 hardness :( hot rolled) ≤170HB; (cold drawn steel) 152 ~ 217HB ● Heat treatment and microstructure : ● Delivery status: hot-rolled or cold-drawn delivery, the delivery status should be specified in the contract.