Overview
| brand | Zhaofeng | specifications | complete |
| surface | smooth | shape | flat |
| content | Processing services | cutting | |
| Delivery Services | Delivery to factory | Weighting method | Weighing |
| Processing customization | yes | Is it customizable | yes |
| Can it be processed | yes | Chinese name | 4Cr13 stainless steel |
| Type | Martensitic stainless steel | Standards | GB/T 1220-1992 |
| Applicable scope | Parts, tools, and medical devices in various construction projects | After quenching | Higher hardness than 3Cr13 |
| hardness | ≥ 50HV | ||
Product Details
● Chemical composition:
Carbon C: 0.36~0.45 Silicon Si: ≤ 0.60
Manganese Mn: ≤ 0.80
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 12.00-14.00
Nickel Ni: allowed to contain ≤ 0.60
● Mechanical properties:
Hardness: Annealed, ≤ 201HB; Quenching and tempering, ≥ 50HV
● Heat treatment specifications and metallographic structure:
Heat treatment specifications: 1) Annealing, slow cooling at 800~900 ℃ or fast cooling at about 750 ℃; 2) Quenching, oil cooling at 1050-1100 ℃; 3) Tempering, rapid cooling at 200-300 ℃.
Metallographic structure: The structural feature is martensitic type.
● Annealing
Generally, annealing is carried out at 780-800 degrees Celsius for 4-6 hours, cooled to 550 degrees Celsius for air cooling at a cooling rate of ≤ 50 degrees Celsius per hour. Isothermal annealing is carried out at 700-800 degrees Celsius for 2-4 hours, followed by 670-720 degrees Celsius for 2-4 hours, cooled to 500 degrees Celsius for air cooling at a cooling rate of ≤ 50 degrees Celsius per hour, with an annealing hardness of 241-197HB