Shape-Memory Fasteners, Nitinol Fasteners, NiTi Alloy

Shape-Memory Fasteners are crafted from advanced shape-memory alloy materials. When exposed to specific temperatures (e.g., heating or electrical activation), these fasteners automatically revert to their pre-set shape, generating a precise and reliable preload force. This unique capability revolutionizes traditional fastening methods, enabling "adaptive locking" and "active control", making them particularly suitable for confined spaces, vibration-prone environments, and applications demanding exceptional sealing integrity. Available in a range of sizes and grades, HM's Shape-memory fasteners meet the highest standards of quality and reliability for demanding applications.

• Working temperature: -40℃-350℃

Shape-Memory Fasteners Chemical Composition

Shape-Memory Fasteners Properties

Shape-Memory Fasteners: Structure and Working Principle

Working Principle: The locking ring is made of a shape-memory alloy with temperature-sensing properties. Once the anti-loosening bolt is installed, a high-temperature heat source is used to heat the fastening ring. The shape memory effect of the alloy causes the ring to shrink radially upon heating, continuously generating a centripetal restoring force. This increases the friction between the nut and the bolt, effectively preventing loosening and ensuring a secure lock.

Shape-Memory Fasteners Features

• Unique self-pressurizing function
• Excellent corrosion resistance
• High damping properties
• High specific strength
• Wear-resistant and non-magnetic
• High tensile strength
• Vibration absorption, reducing loosening caused by vibrations
• Resistant to harsh environments, non-corrosive
• Durable fastening, does not loosen
• No need for coatings or plating, environmentally friendly

Shape-Memory Fasteners Applications

• Aerospace: Used for fastening and releasing aircraft skins, engine nacelles, and spacecraft deployable structures (e.g., solar panels), enabling lightweight design and automatic deployment in the space environment.
• Biomedical: Serving as orthopedic implants (e.g., bone staples), they automatically tighten at body temperature to promote bone healing, eliminating the need for a second removal surgery.
• Automotive Industry: Applied in sealing and fixing battery packs in new energy vehicles, safety devices triggered upon collision, and sealing pipe joints in hard-to-reach areas.
• Precision Electronics: Used to secure internal components sensitive to thermal stress and vibration (e.g., CPU heat sinks), providing uniform clamping force and preventing chip damage.
• Oil & Gas: Used for subsea pipeline connections and wellhead equipment, which can activate in cold seawater to form highly reliable gas-tight and water-tight seals.
• Smart Textiles: Integrated into protective clothing or sports equipment to enable on-demand ventilation or fit adjustment.
• Civil Engineering: Acting as intelligent reinforcement bars or bolts in concrete structures, they automatically tighten under deformation or fire conditions for structural reinforcement and early warning.

Shape-Memory Fasteners Packaging

Shape-Memory Fasteners will be packaged in custom foam inserts within sturdy wooden crates. This multi-layer protection ensures the ingots are shielded from impacts, vibrations, and environmental changes, enabling them to arrive safely in optimal conditions.

Where to Buy Shape-Memory Fasteners in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Titanium products, including Shape-Memory Fasteners, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We are a specialized supplier of premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.