Product Overview
Nickel Titanium Hafnium Alloy (NiTiHf) is an advanced shape memory alloy(SMA) that offers enhanced high-temperature performance and shape memoryeffects. By adding hafnium (Hf) to the traditional nickel-titanium (NiTi) alloysystem, the material achieves higher transformation temperatures, superiormechanical properties, and improved thermal stability. This makes NiTiHf alloyideal for applications in aerospace, automotive, biomedical devices, and otherindustries where high-temperature shape memory and superelasticity areessential.
Product Features
Enhanced Shape Memory Effect:
Exhibits excellent shape memory characteristics, allowing it to return to its original shape after deformation when exposed to heat.
Suitable for actuators, sensors, and high-performance engineering components.
High-Temperature Superelasticity:
By incorporating hafnium, the transformation temperature is significantly increased, allowing the alloy to maintain superelasticity at elevated temperatures (up to 150-250°C).
Ideal for high-temperature environments where traditional NiTi alloys may lose their performance.
Superior Mechanical Properties:
Offers high tensile strength, fatigue resistance, and durability, even under cyclic loading conditions.
Excellent for applications that require repeated shape recovery over long service lifetimes.
Biocompatibility:
Safe for use in medical applications such as stents, guidewires, and orthopedic implants due to its biocompatibility and corrosion resistance.
Applications
Aerospace and Defense: Used in high-temperature actuators, adaptive structures, and control systems for aircraft and satellites.
Automotive Industry: Ideal for temperature-sensitive components, such as engine actuators and sensors, due to its high-temperature resilience.
Biomedical Devices: Utilized in medical implants like stents, bone plates, and surgical instruments for its shape memory effect and biocompatibility.
Industrial Engineering: Suitable for valves, couplings, and other components requiring precise actuation and high reliability in demanding environments.
Chemical Composition
Element | Ni | Ti | Hf |
Content (%) | 50-55 | 40-45 | 5-10 |
Mechanical Properties
Property | Value |
Transformation Temp (°C) | 100-250 (adjustable with composition) |
Tensile Strength (MPa) | ≥900 |
Yield Strength (MPa) | ≥600 |
Elongation (%) | ≥15 |
Hardness (HV) | ≥350 |
Density (g/cm³) | 6.5-7.0 |
Product Specifications
Forms Available: Rods, Wires, Sheets, Tubes
Diameter (Wires/Rods): 0.5mm - 20mm
Thickness (Sheets): 0.1mm - 5mm
Surface Finish: Polished, Oxide layer removal, or as-cast
Manufacturing Process
Produced using vacuum induction melting followed by precise thermo-mechanical processing to optimize the shape memory and superelastic properties.
Heat treatment can be customized to adjust the transformation temperatures for specific applications.
Packaging and Delivery
Packaging: Anti-corrosion wrapping + wooden crate to ensure protection during shipment.
Lead Time: Typically 3-4 weeks, depending on order quantity and customization needs.