Non-electrolytic CFRP nut Alu-Arma nut
This is an aluminum alloy nut for CFRP that prevents galvanic corrosion. It allows for fastening with metal bolts to CFRP without worrying about galvanic corrosion.
■ High Risk Mitigation for Galvanic Corrosion These are aluminum alloy nuts. They are treated with a patented special hard anodized coating on the surface to ensure electrical insulation and effectively prevent the occurrence of galvanic corrosion. When mounted on CFRTP containing 40% carbon fiber and subjected to corrosion resistance evaluation using the JIS saltwater alternating immersion method, they maintain corrosion resistance for 3,000 hours. ■ Synergy in Weight Reduction The specific gravity of aluminum armor nuts is one-third that of iron. This allows for weight reduction of both the material using CFRP and the nuts themselves simultaneously. ■ Strong Fastening Capability The pull-out strength exceeds that of conventional knurled insert nuts when mounted on CFRTP and pulled out. Additionally, the resistance to rotation and the strength of the internal threads are at the level where a bolt of strength class 10.9 would break when screwed in. The secret lies in the shape of the nut, which allows for easy flow of carbon fiber. ■ Contribution to Overall Cost Reduction The costs associated with galvanic corrosion measures that were previously necessary are reduced. This lowers the overall manufacturing costs, promotes the use of CFRP, and contributes to product weight reduction.
- Company：ヤマシナ
- Price：Other
