PEEK 450CA25 represents a specialized grade of polyether ether ketone (PEEK) reinforced with 25% carbon fiber by weight, specifically engineered for dental prosthetic applications. This material configuration has emerged as a compelling alternative to traditional titanium and zirconia in specific dental restoration scenarios, offering a unique combination of mechanical properties, biocompatibility, and processing advantages that make it particularly suitable for dental laboratories and prosthetic manufacturers looking to sell on Alibaba.com to global buyers.
The "450CA25" designation follows Invibio's (a Victrex company) naming convention, where "450" indicates the base PEEK polymer grade, "CA" denotes carbon fiber reinforcement, and "25" specifies the carbon fiber content percentage. It's important to note that different manufacturers use varying naming systems—Victrex's mainstream product line includes 450CA30 (30% carbon fiber) and 450CA40 (40% carbon fiber), while the 25% carbon fiber variant is less commonly available and may be specific to certain suppliers or regional markets [6]. This variation in carbon fiber content significantly impacts mechanical properties and application suitability, which we'll explore in detail throughout this guide.
For dental professionals and B2B buyers evaluating materials for prosthetic frameworks, understanding the carbon fiber content is critical. The 25% carbon fiber configuration offers a balanced stiffness-to-toughness ratio that makes it particularly suitable for removable partial denture frameworks, implant abutments, and full-arch reinforcement structures where moderate load-bearing capacity is required without the brittleness associated with higher carbon content or ceramic alternatives.
Carbon Fiber Content Comparison: 25% vs 30% vs 40% PEEK for Dental Applications
| Carbon Fiber Content | Elastic Modulus (GPa) | Tensile Strength (MPa) | Toughness | Best For | Trade-offs |
|---|---|---|---|---|---|
| 25% (450CA25) | 18-20 | 240-260 | Higher | Thin-wall frameworks, aesthetic zones, removable partial dentures | Slightly lower stiffness than 30% CF |
| 30% (450CA30) | 24-28 | 265-280 | Moderate | Load-bearing implant abutments, full-arch frameworks | Reduced toughness, higher stiffness |
| 40% (450CA40) | 30-35 | 290-310 | Lower | High load-bearing applications, specialized prosthetics | Brittleness increases, limited dental use |
| Unreinforced PEEK | 3-4 | 90-100 | Highest | Temporary restorations, non-load-bearing components | Insufficient stiffness for permanent frameworks |

