Ni-Ti Alloy Bar
The Ni-Ti Alloy Bar supplied by China Super Tech Co., Ltd. is a precision-engineered shape memory material designed for demanding functional and structural applications. Based on vacuum induction melting (VIM) followed by multiple vacuum arc remelting (VAR) cycles, the alloy achieves ultra-low impurity levels and highly stable phase transformation behavior.
- Product Introduction
Product Introduction
The Ni-Ti Alloy Bar supplied by China Super Tech Co., Ltd. is a precision-engineered shape memory material designed for demanding functional and structural applications. Based on vacuum induction melting (VIM) followed by multiple vacuum arc remelting (VAR) cycles, the alloy achieves ultra-low impurity levels and highly stable phase transformation behavior.
The Ni-Ti Alloy Bar exhibits excellent shape memory effect and superelasticity due to a controlled near-equiatomic nickel-titanium composition and tightly regulated thermo-mechanical processing. Through proprietary cold drawing and intermediate annealing cycles, the microstructure is refined to ensure uniform transformation temperature distribution and consistent mechanical response. This makes it suitable for high-reliability environments where repeatable deformation recovery and corrosion resistance are critical, especially in medical, aerospace, and precision engineering sectors.
Product Features
1.Stable Shape Memory Performance
Achieved through precise control of Ni/Ti atomic ratio and multi-stage heat treatment, ensuring consistent martensite–austenite transformation behavior.
2.Superior Superelasticity
The controlled cold working and recrystallization process enhances recoverable strain capacity up to 8%, outperforming conventional stainless alloys.
3.High Purity Vacuum Melting Process
VIM + VAR refining reduces oxygen and inclusions, significantly improving fatigue resistance and long-term stability.
4.Excellent Corrosion Resistance
Naturally formed titanium oxide passive layer provides strong resistance in physiological saline and marine environments.
Product Applications
The Ni-Ti Alloy Bar is widely used in:
1.Medical devices such as guidewires, orthopedic fixation components, and minimally invasive surgical tools
2.Aerospace actuators requiring lightweight adaptive response materials
3.Precision robotics where repeatable elastic deformation is required
4.Industrial sensors and thermal response components
5.Eyeglass frames and consumer products requiring flexibility and durability
These applications benefit from the alloy's ability to recover shape after deformation without permanent structural damage.
Customization Services
China Super Tech Co., Ltd. provides full customization support including:
1.Adjustable transformation temperature (Af range from -20°C to +100°C)
2.Custom diameter and length machining tolerances
3.Surface finishing: polished, ground, or oxidized layers
4.Composition tuning for specific elasticity or strength requirements
5.OEM/ODM support for medical and industrial-grade specifications
Each batch is produced under controlled metallurgical traceability to ensure consistent performance across production lots.
Parameters & Specifications
|
Item |
Specification |
|
Material |
Nickel Titanium (NiTi, near-equiatomic) |
|
Standard |
ASTM F2063 / ISO 5832 (medical grade available) |
|
Density |
~6.45 g/cm³ |
|
Diameter Range |
1.0 mm – 50.0 mm |
|
Length |
100 mm – 3000 mm (customizable) |
|
Tensile Strength |
800 – 1200 MPa |
|
Elongation |
10% – 15% |
|
Transformation Temperature |
-20°C to +100°C (adjustable) |
|
Processing Method |
VIM + VAR + Hot forging + Cold drawing |
|
Surface Condition |
Bright / Ground / Polished |
FAQ
Q1: What makes Ni-Ti alloys different from stainless steel?
Ni-Ti alloys provide shape memory and superelasticity, allowing them to return to original shape after deformation, unlike stainless steel which undergoes permanent plastic deformation.
Q2: Can transformation temperature be customized?
Yes. By adjusting nickel content and heat treatment parameters, transformation temperature can be precisely controlled for specific application environments.
Q3: Is this material suitable for medical use?
Yes. With vacuum refining and strict impurity control, the material can meet medical-grade standards such as ASTM F2063.
Q4: How does China Super Tech ensure consistency?
Each production batch undergoes composition analysis, DSC transformation testing, and mechanical verification to ensure uniform performance.
Q5: Can the bar be machined into complex shapes?
Yes, but machining requires specialized parameters due to work-hardening behavior. We also provide pre-formed semi-finished shapes to reduce processing difficulty.
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