17-4PH Hard Stainless Steel Medical Drill Bit; Hole Opener; Passivation Treatment.

17-4PH Hard Stainless Steel Medical Drill Bit; Hole Opener; Passivation Treatment.

420J2 & 17-4PH Stainless Steel Medical Drill Bits / Trephines

Category	Details
Product Description	These professional-grade medical drill bits and trephines are precision-engineered from two distinct high-performance stainless steels to meet specific surgical demands. 420J2 provides exceptional wear resistance and cutting edge retention, while 17-4PH offers superior overall strength and toughness. Both undergo a mandatory electrochemical passivation process, creating a robust, inert surface that ensures outstanding corrosion resistance, enhanced biocompatibility, and reliable performance in rigorous surgical environments.
Product Application	Designed for precise and efficient bone drilling, cutting, and trephination in a wide range of surgical procedures. • Orthopedic Surgery: Fracture fixation, joint replacement, and bone plate/screw placement. • Neurosurgery: Cranial burr holes and spinal procedures. • Dental & Maxillofacial Surgery: Bone preparation for implants and osteotomies. • Trauma Surgery: Where high-strength, reliable instruments are critical.
Technical Parameters	• Material: 420J2 Martensitic Stainless Steel / 17-4PH (ASTM 630) Precipitation-Hardening Stainless Steel • Hardness (Core): 420J2: ≥ HRC 50-55 / 17-4PH: ≥ HRC 40-45 (H900 Condition) • Surface Treatment: Electrochemical Passivation per ASTM A967 / ISO 16048 • Corrosion Resistance: Excellent resistance to physiological saline and disinfectants, compliant with relevant ASTM/ISO standards. • Biocompatibility: Compliant with ISO 10993-5 (Cytotoxicity) and ISO 10993-10 (Sensitization). • Sterilization: Compatible with autoclaving (steam), gamma radiation, and EtO gas.
Material Hardening Advantages	• 420J2 Hardening Advantage: Achieves high surface hardness primarily through heat treatment (quenching and tempering). This results in exceptional wear resistance and the ability to maintain a sharp cutting edge for longer periods, even when drilling through dense cortical bone. It is ideal for applications where blade sharpness longevity is paramount. • 17-4PH Hardening Advantage: Gains its high strength and toughness through a precipitation-hardening heat treatment process. This treatment precipitates copper-rich phases throughout the matrix, providing a uniform, high strength-to-weight ratio and excellent fatigue resistance. This makes it exceptionally resistant to chipping, torsion, and breakage under high-stress conditions, ensuring procedural safety.

Dongguan Yue Lin Sen Metal Technology Co., Ltd. has passed the GB/T 19001-2016/ISO 9001:2015 quality management system certification and the GB/T 42061-2022/ISO 13485:2016 medical device quality management system certification. It specializes in the research and production of non-standard metal medical instrument precision parts as its main machining metal products. The company owns dozens of high-precision engraving lathes and CNC equipment, as well as a 100,000-grade dust-free workshop for medical accessory processing. This includes CNC lathes, precision milling, lathe-milling compound machines, and spindle machines for processing long-axis medical devices. Precision laser cutting of stainless steel capillary tubes for medical snake bone products, stainless steel thin-walled tubes, and capillary tubes, including secondary processing such as capillary tube tapering, capping, bending, and stamping. Main materials include stainless steel capillary tubes, titanium alloy, copper, aluminum, plastic, and alloy metals for non-standard processing and customization. Widely used in electronics, electrical appliances, medical instruments, automotive parts, transportation, and other industries. The company has gained industry recognition with its commitment to 'quality first, honest operation,' focusing on prototype and bulk production of non-standard parts, supporting custom designs from provided drawings and samples. The process is stable and efficient, integrating trade and manufacturing for quick delivery, ensuring quality with craftsmanship spirit, offering great value without intermediaries. The company adheres to a customer-first, quality-first, continuous improvement, and win-win cooperation business philosophy, providing reliable after-sales service.