Medical
RAS Alloy supplies biocompatible cobalt and nickel alloys for orthopedic implants, surgical instruments, cardiovascular devices and dental applications.
Typical Alloy Grades
MP35N / L605 / 35NLT
Orthopedic implant components — MP35N, L605
Cardiovascular guidewires and stents — MP35N, 35NLT, L605
Surgical instrument shafts and tips — MP35N
Dental implant abutments and screws — L605
Spinal fixation rods and screws — MP35N
Applicable Standards
A medical device manufacturer reported MP35N guidewire fractures during clinical...
A medical device manufacturer reported MP35N guidewire fractures during clinical use after repeated flexural cycling.
Wire drawing process introduced surface micro-defects <5um that served as fatigue crack initiation sites. Surface roughness Ra 0.4um vs required <0.2um.
Electro-polishing after final drawing pass achieves Ra <0.15um. Combined with 100% eddy-current inspection, fatigue life improved from 450 MPa to >620 MPa.