Y30-cutting steel
Y30 low parathion composite free cutting steel, higher mechanical properties, machinability has been properly improved, higher manufacturing intensity of standard parts.
● Features and application:
The cutting is better than 30 steel, heat treatment process is basically the same, equal to or somewhat less sensitive to quenching crack, according to the part shape, the complexity of the selected quenching media. Requirements for the manufacture of high strength non-heat treated standard parts can also be used to make heat treatment. Y30 processed into small parts, can be quenched in order to improve life.
● Chemical Composition:
Carbon C: 0.27 ~ 0.35
Si Si: 0.15 ~ 0.35
Manganese Mn: 0.70 ~ 1.00
Sulfur S: 0.08 ~ 0.15
Phosphorus P: ≤ 0.06
● Performance and Application:
Low parathion composite free-cutting steel, higher mechanical properties, processability than Y20 appropriate improvements. Manufacturing requires a high strength non-heat-treated or heat-treated pieces of standard parts, small parts can be quenched.
● Mechanical Properties:
Tensile strength σb (MPa): (hot) 510 - 655; (cold drawn) steel thickness or diameter of 8 to 20 hours: 600 ~ 825;> 20 to 30 hours: 560 ~ 765;> 30 hours: 540 ~ 735
Elongation δ5 (%):( hot) ≥ 15; (cold) ≥ 6.0
Reduction of ψ (%):( hot) ≥ 25