According to the working characteristics of medical equipment, the requirements of disinfection at a certain temperature (usually high temperature steam sterilization), can not rust, strength, high hardness (scalpel), not easy to deformation and other characteristics, generally choose stainless steel, and stainless steel with the above characteristics of the material is martensitic stainless steel, such as 3Cr13 and 4Cr13 martensitic stainless steel as well as 9Cr18 stainless steel spring steel, etc., and is the cheapest stainless steel to meet the requirements of the use of medical equipment. And martensitic stainless steel is the cheapest stainless steel, can meet the use of medical equipment requirements.
The heat treatment process is basically quenching + low temperature tempering.
3Cr13 steel quenching temperature 1000 ~ 1050 °, oil quenching, tempering temperature of 150 ~ 350 °
4Cr13 steel quenching temperature of 1050 ~ 1100 °, oil quenching, tempering temperature of 150 ~ 350 °
These two types of steel tempering try to choose a higher temperature, such as 300 °, is for the need for high-temperature sterilization (high-temperature) Sterilization of water vapor up to 300 °)
9Cr18 steel quenching temperature of 1000 ~ 1050, oil quenching, tempering temperature of 200 ~ 300
Of course, the above points out that all kinds of surgical medical equipment, injection and puncture instruments, plastic surgical instruments, general diagnostic instruments, family planning instruments, orthopedic surgery (orthopedic) surgical instruments, and so on, such as the material of scalpels (Scalpel handles and blades, dermatome knives, wart removal knives, lancets, spatulas, shaving knives, dermatome scrapers, picking knives, sharp knives, pedicure knives, manicure knives, scalpels), surgical scissors (general surgical scissors, tissue scissors, comprehensive tissue scissors, dismantling scissors, plaster scissors, anatomical scissors, gauze bandage scissors, educational surgical scissors), all kinds of pliers (general hemostatic forceps, small vessel hemostatic forceps, mosquito type hemostatic forceps, tissue forceps, Carbide inserted needle holding forceps, ordinary needle holding forceps, trauma clip suture removal forceps, skin rolling forceps, bullet forceps, gauze stripping forceps, sponge forceps, tissue forceps, skin tube forceps, instrument forceps), basic surgical tweezers (small blood vessel tweezers, non-invasive tweezers, tissue tweezers, orthopedic tweezers, needle-holding tweezers, health care tweezers (simple tweezers), plucking tweezers, tissue tweezers, dressings tweezers, anatomical tweezers, hemostatic clips), basic surgery needles, hooks (aneurysm needles, probe needle), push hair needle, hair transplantation needle Push hair needles, hair transplantation needles, picking needles, teaching with straight pointed needles, venous hooks, incision hooks, flat hooks, double-ended hooks, skin hooks, anatomical hooks), stethoscopes and so on, excluding medical equipment materials, such as X-ray machines, ultrasound, CT, photographic equipment, laboratory equipment, and so on, the materials of these overall equipment, according to the technical requirements of the parts of the equipment, the choice of a large range of a wide range of types, can not be one by one to mention. can be one by one.