Y12 cutting steel:
● Features and Scope:
SP compound is carbon free cutting steel, free cutting steel is available in a maximum amount of phosphorus, cutting resistance than the 15th steel has improved significantly. Mechanical properties of steel have significant anisotropy,

Mechanical properties of cold-drawn and cold-drawn steel vertical steel close to the 15th, instead of the 15th regular steel less demanding on the mechanical properties of various parts, such as bolts, nuts, pins, shafts, fittings and

Spark plug jackets.
● Chemical Composition:
Carbon C: 0.08 ~ 0.16
Si Si: 0.15 ~ 0.35
Mn Mn: 0.70 ~ 1.00
Sulfur S: 0.10 ~ 0.20
P P: 0.08 ~ 0.15
● 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 drawing) 152 ~ 217HB
● Heat treatment and microstructure specifications:
● Delivery status: hot-rolled or cold-drawn delivery, the delivery status should be specified in the contract.