Nominal Dimensions and Tolerances
| Permissible Variation in OD or ID Dimensions of Guide Tube* | Permissible Variation in OD or ID Dimensions of Stent Tube* |
| Nominal OD（mm） | OD Tolerance（mm） | ID Tolerance（mm） | Nominal OD（mm） | OD Tolerance（mm） | WT Tolerance（mm） |
| OD≤0.3 | ±0.005 | ±0.010 | OD＜0.3 | ±0.010 | ±0.010 |
| 0.3＜OD≤0.5 | ±0.007 | ±0.010 | 0.3≤OD≤0.6 | ±0.015 | ±0.015 |
| 0.5＜OD≤1.5 | ±0.015 | ±0.020 | 0.6＜OD≤1.5 | ±0.020 | ±0.015 |
| 1.5＜OD≤2.5 | ±0.020 | ±0.020 | 1.5＜OD≤2.5 | ±0.020 | ±0.020 |
| 2.5＜OD≤3.5 | ±0.020 | ±0.030 | 2.5＜OD≤3.5 | ±0.020 | ±0.020 |
| 3.5＜OD≤5.0 | ±0.025 | ±0.040 | 3.5＜OD≤5.0 | ±0.030 | ±0.025 |
| 5.0＜OD≤10.0 | ±0.050 | ±0.050 | 5.0＜OD≤10..0 | ±0.050 | ±0.030 |
| 10.0＜OD | ±0.050 | ±0.050 | 10.0＜OD | ±0.050 | ±0.050 |
Mechanical Properties | Condition | Superelastic |
| UTS (Mpa) | ≥1000 |
| Elongation （%） | ≥10 |
| Upper Plateau Stress （Mpa） | ≥380 |
| Permanent set after 6% Strain % | ≤0.3 |
| Active Af ℃ | ≤15 |
*Superelastic properties are measured per Test Method ASTM F2516 at room temperature（22+/-2℃）
*Applicable Standard：ASTM F2633
Surface Finish
Outer surface: oxide or center-less-ground
Inner surface: Etched or oxide
Other finishes can be discussed with Peiertech
Length
Nitinol tube can be delivered in either exact length or random length. For random length orders, a maximum and minimum length shall be discussed with Peiertech.
Straightness
Straightness requirements and measurement methods shall be discussed with Peiertech.
Permissible Outer And Inner Surface Imperfections
Outer and inner surface imperfections criteria on tubes shall be discussed with Peiertech.
Medical Application
Guide Tube, Neddle, Dental Products, Nitinol Tube Components
