1.Specification
1)NITINOL TUBE Outer Diameter Range 0.8~50mm
Wall thkness 0.08~100mm
Length：10-2000mm
2)Tolerance Outer Diameter ±0.015mm, Wall thickness ±0.015mm, Length: 0,+5mm
3)Usage ① Medical devices, such as esophageal stents, biliary stents, urethral stents, vascular stents, birth control rings, and minimally invasive surgical removers etc.
②Chemical industry
2.Chemical Elements &Mechanical Property
| Mechanical Properties | Sample | Tensile Strength Mpa | Yield Strength Mpa | Elongation [ % ] | Residual strain [ % ] |
| Standard | ≥1000 | ≥380 | ≧10 | <0.30 % | |
| Test result | 1250 | 420 | 14% | 0.03% |
| Chemical Composition ( % ) | ||||||||||
| Ti | Ni | Co | Cu | Cr | Fe | Nb | C | H | O | N |
| Remainder | 55.1 | 0.001 | 0.001 | 0.4 | 0.015 | 0.001 | 0.001 | 0.00014 | 0.03 | 0.001 |
3.Application of nitinol
(1) One-way shape recovery using one-way shape memory effect. Such as pipe joint, antenna, sleeve ring and so on.
(2) External bidirectional memory recovery. That is, the use of one-way shape memory effect and with the help of external forces with the temperature rise and fall to do repeated action, such as thermal sensors, robots, terminals, etc.
(3) Endogenous bidirectional memory recovery. That is, the use of two-way memory effect with the temperature rise and fall to do repeated action, such as heat engine, heat sensitive elements. But this kind of application memory decay fast, reliability is poor, not commonly used.
(4) The application of hyperelasticity. Such as spring, terminal post, glasses frame, self - controlled temperature switch. The 20th century was the age of mechatronics. Sensing - integrated circuit - drive is the most typical mechanical and electronic control system, but complex and huge. Shape memory materials have the dual function of sensing and driving, which can realize the miniaturization and intelligence of control system, such as holographic robot, millimeter super micro manipulator and so on. The 21st century will be the era of materials electronics. The shape memory alloy robot is not affected by any environmental conditions except temperature, and is expected to be useful in high technology fields such as reactors, accelerators and space laboratories.
