Y30 cutting steel:
● Features and Scope:
Low parathion composite cutting steel, which is better than the 30th cutting steel, heat treatment process is basically the same, fairly or somewhat less sensitive to quenching crack, you can choose the shape of the part quenching medium degree of complexity. Requirements for the manufacture of non-heat-treated high strength standard parts, heat treatment can also be used to manufacture parts. When Y30 processed into small parts, which can be adjusted in order to improve the life quality of treatment.
● Chemical Composition:
Carbon C: 0.27 ~ 0.35
Si Si: 0.15 ~ 0.35
Mn Mn: 0.70 ~ 1.00
Sulfur S: 0.08 ~ 0.15
Phosphorus P: ≤0.06
● Mechanical Properties:
Tensile strength σb (MPa) :( hot) 510 to 655; (cold drawn) steel thickness or diameter of 8 to 20 o'clock: 600 to 825;> 20 to 30: 560 - 765;> 30: 540 - 735
Elongation δ5 (%) :( hot rolled) ≥15; (rolled) ≥6.0
Reduction of area ψ (%) :( hot rolled) ≥25
Hardness :( hot) ≤187HB; (cold drawing) 174 ~ 223HB
● Heat treatment and microstructure specifications: