What material is used for medical parts

According to the working characteristics of medical parts, it is required to be resistant to a certain temperature during disinfection (usually high-temperature steam disinfection), not to be rusty, high in strength, hardness (scalpel), and not easy to deform. Generally, stainless steel is selected, and stainless steel has The materials with the above characteristics are martensitic stainless steel, such as 3Cr13 and 4Cr13 martensitic stainless steel and 9Cr18 machining stainless steel spring , etc., and martensitic stainless steel is the cheapest stainless steel, which can meet the requirements of medical equipment.
The heat treatment process is basically quenching + low temperature tempering.

3Cr13 steel quenching temperature 1000~1050°, oil quenching, tempering temperature 150~350°
4Cr13 steel quenching temperature 1050~1100°, oil quenching, tempering temperature 150~350°

When tempering these two kinds of steel, try to choose a higher temperature, such as 300 °, for the need of high temperature disinfection (high temperature disinfection water vapor can reach 300 °)

The quenching temperature of 9Cr18 steel is 1000~1050, oil quenching, tempering temperature is 200~300. Of course, the above mentioned are all kinds of surgical medical machining equipment, injection puncture equipment, plastic surgery equipment, general examination equipment, family planning equipment, orthopedics (Orthopedics) ) Surgical instruments and other materials, such as scalpels (scalpel handles and blades, skin knives, wart peeling knives, lancets, spatulas, razors, dander scrapers, picking knives, front knives, pedicure knives , Manicure knife, scalpel), surgical scissors (ordinary surgical scissors, tissue scissors, comprehensive tissue scissors, suture removal scissors, plaster scissors, dissecting scissors, gauze bandage scissors, educational surgical scissors), various forceps (ordinary hemostatic forceps) , Small blood vessel hemostatic forceps, mosquito hemostatic forceps, tissue forceps, cemented carbide insert needle holders, ordinary needle holders, wound crimping forceps, skin pressure forceps, bullet forceps, gauze peeling forceps, sponge forceps, scarf forceps , Skin tube forceps, instrument forceps), forceps for basic surgery (small vessel forceps, non-invasive forceps, tissue forceps, plastic forceps, needle-holding forceps, health forceps (simple forceps), plucking forceps, tissue forceps, dressing forceps , Dissecting forceps, hemostatic clip), basic surgical needles, hooks (aneurysm needles, probes, hair pushing needles, hair transplanting needles, picking needles, straight-pointed needles for teaching, vein retractors, wound hooks, flat retractors, double-ended retractors , Skin retractors, anatomical hooks), stethoscopes, etc., do not include the machining materials of medical equipment, such as X-ray machines, B-ultrasound, CT, photographic equipment, laboratory equipment, etc. The materials of these overall equipment are based on the technical requirements of the parts of the equipment Different, you can choose from a wide range of varieties.