Understanding Nitinol Tube
Nitinol alloy possesses outstanding shape memory effect and superelasticity, making it a key material in the field of medical device manufacturing. Through precise cutting and processing procedures, nitinol tubes can be fabricated into multi-functional medical equipment, widely used in neurointerventional stents, catheters, peripheral stents, and dental treatment products, etc.

Nitinol Tubes: Cardiovascular, Peripheral Vascular, Cerebrovascular
Ultra pure Nitinol Tubes: High-end Cerebrovascular, Cardiac
Nitinol Wires: Dental, Vascular Intervention, Structural Heart, High-endCatheter Fields
Mechanical Properties
Tube Status: Superelastic
Tensile Strength: ≥1000MPa
Elongation: ≥10%
4% Upper Plateau Stress: ≥380MPa
6% Residual Deformation: ≤0.3%
Austenite Finish Temperature (Af): ≤15℃
Size Range
外径 /mmOuter Diameter / mm | 外径公差 /mmOuter Diameter Tolerance / mm | 内径公差 /mmInner Diameter Tolerance / mm | 壁厚 /mmWall Thickness / mm | 壁厚公差 /mmWall Thickness Tolerance / mm | 内表面状态Inner Surface Condition | 外表面状态Outer Surface Condition |
0.15≤OD≤0.5 | ±0.002 | ±0.005 | 0.025≤WT≤0.12 | ±0.003 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
0.5≤OD≤1.0 | ±0.005 | ±0.008 | 0.025≤WT≤0.30 | ±0.005 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
1.0≤OD≤3.0 | ±0.01 | ±0.01 | 0.025≤WT≤0.40 | ±0.008 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
3.0≤OD≤6.0 | ±0.01 | ±0.015 | 0.05≤WT≤1.5 | ±0.008 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
6.0≤OD≤9.0 | ±0.015 | ±0.02 | 0.07≤WT≤2.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
9.0≤OD≤12.0 | ±0.02 | ±0.02 | 0.1≤WT≤2.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
12.0≤OD≤15.0 | ±0.02 | ±0.03 | 0.1≤WT≤3.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
Understanding Ultra-Pure Nitinol Tube
Kconti's ultra-pure nitinol tube features a maximum size of porosity and non-metallic inclusions ≤10.0μm, with the area percentage of porosity and non-metallic inclusions ≤0.45%. This gives it superior fatigue resistance, making it the first choice for implantable devices requiring high fatigue performance, such as intracranial stents and heart valve stents.

Mechanical Properties
· Tube Status: Superelastic
· Tensile Strength: ≥1000MPa
· Elongation: ≥10%
· 4% Upper Plateau Stress: ≥380MPa
· 6% Residual Deformation: ≤0.3%
· Austenite Finish Temperature (Af): ≤15℃
Size Range
外径 /mmOuter Diameter / mm | 外径公差 /mmOuter Diameter Tolerance / mm | 内径公差 /mmInner Diameter Tolerance / mm | 壁厚 /mmWall Thickness / mm | 壁厚公差 /mmWall Thickness Tolerance / mm | 内表面状态Inner Surface Condition | 外表面状态Outer Surface Condition |
0.15≤OD≤0.5 | ±0.002 | ±0.005 | 0.025≤WT≤0.12 | ±0.003 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
0.5≤OD≤1.0 | ±0.005 | ±0.008 | 0.025≤WT≤0.30 | ±0.005 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
1.0≤OD≤3.0 | ±0.01 | ±0.01 | 0.025≤WT≤0.40 | ±0.008 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
3.0≤OD≤6.0 | ±0.01 | ±0.015 | 0.05≤WT≤1.5 | ±0.008 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
6.0≤OD≤9.0 | ±0.015 | ±0.02 | 0.07≤WT≤2.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
9.0≤OD≤12.0 | ±0.02 | ±0.02 | 0.1≤WT≤2.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |
12.0≤OD≤15.0 | ±0.02 | ±0.03 | 0.1≤WT≤3.0 | ±0.01 | 洁净态 / 氧化态Clean/Oxidized | 氧化态 / 研磨态Oxidized/Ground |