9Cr18 stainless steel used for slicing and shearing machine and cutting tools, surgical blades, high wear equipment parts. ● Features and Scope: 9Cr18 high-chromium steel is high carbon martensitic stainless steel, after quenching with high hardness, high wear resistance and corrosion resistance. The steel suitable for manufacturing withstand high wear resistance, high load and plastic mold in corrosive role of the media. The steel is Levin's steel body, easy to form uneven carbide segregation affect the die life, so in the thermal processing must be strictly controlled thermal processing, pay attention to appropriate processing ratio. ● Chemical Composition: Carbon C: 0.90 ~ 1.00 Si Si: ≤0.80 Mn Mn: ≤0.80 sulfur S: ≤0.030 phosphorus P: ≤0.035 chromium Cr: 17.00 ~ 19.00 Ni: to allow containing ≤0.60 Mo Mo: can be added ≤0.75 ● Mechanical Properties: Hardness: annealing, ≤255HB; quenching and tempering, ≥55HRC ● Heat treatment and microstructure: heat treatment specifications: 1) annealing, 800 ~ 920 ℃ slow cooling; 2) quenching, 1000 ~ 1050 ℃ oil cooling; 3) Tempering, 200 ~ 300 ℃ oil, air cooling. Microstructure: Organizing for the martensite type. ● Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, by not heat treatment delivery.