ASTM F75-23 (UNS R30075), also known as Co28Cr6Mo cobalt chromium molybdenum alloy, is a classic cast cobalt-base alloy. CAG-Co 28Cr6Mo bars are melted and formed strictly complying with ASTM F75-23 specification. This stock item is φ65mm in diameter with 200mm length.
The alloy is mainly composed of cobalt, 28% chromium and 6% molybdenum with well-controlled carbon content. Chromium delivers superior corrosion and oxidation resistance. Molybdenum improves wear resistance, mechanical strength and pitting corrosion resistance. The cobalt matrix ensures excellent fatigue resistance under cyclic loading.
✅ Material Properties

1. Excellent wear and erosion resistance, suitable for long-term reciprocating working conditions
2. Resistant to body fluid, weak acid and salt spray, qualified biocompatibility for medical implant applications
3. Stable high-temperature strength, maintains high hardness and low deformation at moderate elevated temperature
4. Good castability and machinability, available for CNC turning, grinding and polishing
   ✅ Product Specification: Round bar φ65×200mm. Length cutting and other diameter customization available
   ✅ Inspection & Certificates: Material test certificate by heat number, chemical composition report, mechanical property report, UT/MT non-destructive testing report can be supplied
   ✅ Application Fields
   • Medical: Orthopedic joints and bone implant components
   • Aerospace: High-temperature wear-resistant precision parts
   • Oil & Gas / Petrochemical: Corrosion & wear resistant valves, pump components
   • Precision Machinery: Wear-resistant bushings, bearings, precision mold parts
   As a professional alloy material manufacturer, we supply standard bars as well as forgings, plates, tubes and non-standard custom parts. Relevant certificates such as PED can be offered. Sample orders are accepted. Please contact us for full catalog and quotation.