Cobalt Alloy Powder (CoCrMo ASTM F75)

Description

1. Product Overview
This product is a gas-atomized, spherical Cobalt-Chromium-Molybdenum alloy powder conforming strictly to ASTM F75, the global benchmark for surgical implant applications. It is primarily used in additive manufacturing (laser powder bed fusion) and metal injection molding for production of orthopedic implants, dental prostheses, and wear-resistant surgical instruments. The key value proposition lies in its exceptional fatigue strength, biocompatibility, and corrosion resistance—directly reducing long-term implant failure risk. Strategically, this material is critical as the medical device industry accelerates toward patient-specific, 3D-printed metal implants requiring traceable, ultra-clean powder feedstocks.

2. Key Specifications & Technical Characteristics

• Chemical Composition (wt%): Co (bal.), Cr (27–30%), Mo (5–7%), Ni ≤0.5%, Fe ≤0.75%, C ≤0.35%, Si ≤1.0%, Mn ≤1.0%

• Purity Level: ≥99.9% (low oxygen <800 ppm, low nitrogen <400 ppm)

• Physical Characteristics:

  • Form: Spherical (gas atomized)

  • Color: Grey-metallic

  • Particle size distribution: 15–45 µm (for LPBF), 45–105 µm (for MIM), or custom cut

  • Apparent density: 4.5–5.0 g/cm³

  • Tap density: >5.5 g/cm³

  • Hall flow: ≤18 s/50g

• Packaging Options: 2.5 kg vacuum-sealed aluminum-lined bags; 15 kg steel drums; 100 kg IBC totes with argon backfill

• Shelf Life: 36 months when stored below 25°C in original unopened packaging with desiccant

3. Core Industrial Applications

• Orthopedic Implants: Hip stems, knee femoral components, spinal cages – outperforms Ti6Al4V in wear resistance (10x lower wear rate) and long-term fatigue strength under cyclic loads.

• Dental Restorations: Removable partial denture frameworks and crowns – superior to precious alloys at 1/3 cost and eliminates nickel sensitivity risk.

• Surgical Tools: Bone mills, reamers, and rongeurs – retains hardness up to 400°C, enabling repeated autoclave sterilization without degradation.

• Aerospace & Industrial Valves: Extreme wear seats and guides – where galling resistance exceeds stainless steel by 300%, reducing downtime in high-temperature, high-friction environments.

4. Competitive Advantages

• Quality Consistency: Lot-to-lot traceability with certified mill test reports (MTR) per ASTM E29; all batches screened via laser diffraction and SEM morphology analysis.

• Supply Reliability: Multi-source raw material agreements and 3 redundant atomization lines ensure 100% on-time delivery, even during global cobalt supply volatility.

• Logistics Capability: Strategic warehousing in Rotterdam, Singapore, and Houston – air-freight ready for emergency OR restocks.

• Price Competitiveness: Direct from atomizer, no intermediaries – pricing at 12–18% below leading European brands for equivalent specification.

• Sustainability: 92% powder recycle yield with cradle-to-gate carbon footprint verified; compliant with EU MDR and FDA’s QMS for medical devices.

• Technical Support: Free print parameter development (including exposure test coupons) and on-site laser reflectance calibration service for first order ≥ 100 kg.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 15 kg for standard 15–45 µm medical-grade powder

• Bulk Loading Capacity: 20 MT per 20-ft container (UN-certified fiber drums stacked on pallets)

• Container Capacity per 20-ft Dry Container: 20 metric tons net (24 pallets with 48 drums)