Product Overview
Nickel-Titanium-Hafnium (NiTiHf) Alloy is a high-performance shape memoryalloy (SMA) known for its remarkable shape memory effect, superelasticity, andhigh-temperature stability. By adding hafnium to the traditional NiTi (Nitinol)alloy, NiTiHf exhibits enhanced thermal stability, making it suitable forapplications that demand high-temperature performance, such as aerospace,automotive, and medical devices. The alloy's unique properties allow it toreturn to its original shape after deformation when subjected to heat, makingit highly versatile in applications that require actuation or adaptiveresponses.
Product Features
Superior Shape Memory and Superelasticity:
Offers excellent shape memory recovery, allowing the alloy to return to its pre-deformed shape upon heating.
Superelastic behavior enables significant strain recovery, ideal for components requiring flexibility and resilience.
Enhanced High-Temperature Stability:
The addition of hafnium increases the transformation temperature range, making NiTiHf suitable for applications requiring stability at elevated temperatures (up to 250-300°C).
Retains mechanical performance under thermal cycling, ensuring long-term reliability.
Excellent Corrosion Resistance:
Resistant to corrosion in harsh environments, making it ideal for aerospace, automotive, and medical applications.
Suitable for prolonged exposure to seawater, acidic environments, and biological fluids.
Biocompatibility:
Safe for use in medical implants and surgical tools due to its biocompatible nature.
Reduced risk of allergic reactions compared to other alloys, making it ideal for stents, orthodontic wires, and prosthetics.
Applications
Aerospace and Defense: Used in actuators, sensors, and adaptive structures that require high-temperature stability and mechanical durability.
Automotive Industry: Ideal for high-performance engine components, exhaust systems, and temperature-sensitive actuators.
Medical Devices: Widely used in stents, guidewires, orthodontic braces, and minimally invasive surgical tools due to its shape memory properties.
Industrial Equipment: Suitable for high-temperature valves, seals, and coupling devices that demand both flexibility and corrosion resistance.
Chemical Composition
Element | Ni | Ti | Hf |
Content (%) | 50 | 40 | 10 |
Mechanical Properties (Estimated)
Property | Value |
Transformation Temperature (°C) | 200-300 |
Tensile Strength (MPa) | ≥1000 |
Yield Strength (MPa) | ≥800 |
Elongation (%) | ≥15 |
Hardness (HV) | ≥400 |
Density (g/cm³) | 6.5-7.0 |
Product Specifications
Forms Available: Rods, Sheets, Tubes, and Wires
Diameter (Rods/Wires): 0.5mm - 50mm
Thickness (Sheets): 0.1mm - 5mm
Surface Finish: Polished or Ground
Manufacturing Process
Produced using vacuum induction melting (VIM) and precision hot forging to achieve a uniform microstructure.
The alloy undergoes thermal treatment to optimize shape memory effect and superelastic properties.
Packaging and Delivery
Packaging: Sealed in anti-corrosion bags and packed in shockproof foam-lined crates.
Lead Time: Typically 3-5 weeks, depending on order size and customization.