In modern medicine, high requirements are placed not only on the effectiveness of treatment methods, but also on the quality and safety of the materials used. Alloys manufactured by PZPS meet current healthcare requirements, which is why they are widely used in various medical fields — from diagnostic equipment components to implants.
Important Properties of Materials for Medicine
Steels and alloys used in healthcare must be safe for patients while also ensuring the durability of medical products. Here are some of the most important properties for such materials:
- Biocompatibility. Medical alloys must be safe for the human body. This means the absence of negative reactions, such as rejection or inflammation, upon contact with living tissues and biological fluids. Modern medical materials must not only be inert but also support normal cell function.
- Corrosion resistance. Medical products often come into contact with various biological environments that may contain acids, salts, and other substances capable of reacting with metals. The use of corrosion-resistant alloys increases the service life of medical instruments and implants, which is especially important with constant exposure to moist environments.
- Strength and hardness. Medical products must withstand significant mechanical loads, which is especially critical for implants. Important characteristics here include shear and tensile strength, as well as the material's fatigue strength, which determines its resistance to repeated load cycles.
- Sterilization resistance. Medical instruments and implants undergo autoclaving, chemical, ultraviolet, radiation, and other types of sterilization. The materials used in these products must retain their mechanical and chemical properties even after repeated exposure to these methods.
- Absence of toxicity. It is important that steels and alloys do not release toxic substances upon contact with tissues or biological fluids. Toxic materials can cause allergic reactions, irritation, or other more serious consequences.
- Ease of processing. To manufacture medical instruments and prosthetics of complex shapes, alloys must be easy to process. This includes the ability to weld, forge, stamp, machine, and undergo other types of processing.
- X-ray transparency. For some medical products, the material's ability to transmit X-rays is important. This allows doctors to accurately assess a patient's condition using X-ray examinations without the image being distorted by dense metal objects.
The choice of materials for medical applications depends on specific requirements and operating conditions. For example, titanium alloys with increased strength and high biocompatibility are used for implants, while durable, corrosion-resistant stainless steels are used for surgical instruments.
Application of PZPS Alloys in Medicine
PZPS manufactures steels and alloys that are used in a wide variety of medical fields. Let's look at the most in-demand of them.
Stainless Steel 12Х18Н9 and 12Х18Н10Т
Steel grades 12Х18Н9 and 12Х18Н10Т are used in medicine due to their high corrosion resistance, strength, and ductility. These materials belong to the austenitic class and have a stable structure and unchanging mechanical properties even under prolonged exposure to high stresses and aggressive environments.
Chemical composition:
- 12Х18Н9: approximately 0.1% carbon, 17–19% chromium, 8–10% nickel.
- 12Х18Н10Т: similar composition, but with a higher nickel content (9–11%) and titanium (about 1%) to improve corrosion resistance.
Areas of application:
- Implants. Steels 12Х18Н9 and 12Х18Н10Т are used to manufacture pins, plates, and screws used in traumatology and orthopedics. Due to their high strength and biocompatibility, they provide reliable fixation of bones and tissues.
- Medical equipment. Durable corrosion-resistant steels are used to manufacture sterilizers, autoclaves, and containers for storing and transporting biological materials. They are reliable, durable, and easy to clean and sterilize.
- Laboratory glassware. Test tubes, Petri dishes, flasks, and other items made from chemically resistant steels ensure not only the reliability of laboratory research but also the possibility of repeated sterilization without loss of performance properties.
In addition to steel grades 12Х18Н9 and 12Х18Н10Т, PZPS also produces the corrosion-resistant steel 10Х17Н13М3Т, which is often used to manufacture various medical products.
Precision Alloy 40КХНМ
It is used in surgery and orthopedics, where high strength and durability of materials are required. 40КХНМ is suitable for making medical instruments and implants, as well as for connecting blood vessels.
Chemical composition:
- The base is cobalt (39–41%). 40КХНМ also contains chromium (19–21%), nickel (15–17%), iron (10–18%), molybdenum (6.4–7.4%), and manganese (1.8–2.2%), which improves mechanical properties and corrosion resistance.
Application:
- Vascular suturing clips. In vascular surgery, clips made of 40КХНМ alloy are used to connect the ends of vessels after damage or incision. These clips must be flexible, strong, and biocompatible to ensure a reliable connection and prevent bleeding.
- Fracture implants. Plates, screws, and rods made of 40КХНМ alloy are used to fix bones in the correct position. Thanks to its corrosion resistance and high strength, 40КХНМ produces durable and reliable implants that support the healing process.
- Surgical instruments. Due to its strength and corrosion resistance, 40КХНМ alloy is widely used in the manufacture of clamps, tweezers, and other instruments for precise surgical operations.
PZPS can also supply precision alloys for elastic elements, grades 36НХТЮ and 17ХНГТ, with high strength, corrosion, and relaxation properties.
Magnetically Soft and Magnetically Hard Alloys
Magnetic alloys are used in medical equipment where the creation of magnetic fields or the use of magnetic properties for the diagnosis and treatment of diseases is required. Main examples:
- MRI (magnetic resonance imaging). These devices use powerful magnets made of magnetically hard alloys, which create the strong magnetic field needed to obtain accurate images of internal organs.
- Pacemakers. These devices are implanted in the patient's body to stabilize the heart rhythm. They contain miniature magnets that ensure the reliable operation of pacemakers.
- Magnetotherapy devices. Magnetic fields are used in therapy for recovery after injuries and treatment of inflammation. Special magnetic coils made of magnetically soft materials are used for this purpose.
- Brain magnetic stimulation devices. Used in neurophysiology to study brain function and develop methods for treating neurological diseases. They create magnetic fields that act on neurons and contain components made of magnetically soft materials.
- Sensors. Sensitive elements that respond to changes in the magnetic field are made from magnetically soft alloys. Such sensors are used to monitor physiological parameters, such as pressure or temperature.
At PZPS you can purchase cold-rolled strip grade 27КХ per GOST 10160-75 and other magnetically soft alloys: 49К2ФА-ВИ, 50Н, 50НП, 79НМ, 80НМ, 81НМА. All materials undergo multi-stage quality control, comply with international standards, and are certified for medical use. We also manufacture products to order, taking into account customers' specific requirements, whether particular mechanical characteristics or unique dimensions. PZPS specialists are constantly working to improve existing materials and develop new solutions, which allows us to maintain leadership in the precision alloys market.
