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Nitinol Micro-Springs
$2.21 – $56.17
per 5mm
KRL micro springs are the smallest nitinol springs–and the lightest actuators available anywhere! So, if you’re looking to build something small, KRL is the place to go!
Spring mandrel size (spring inner diameter) equal and smaller than 3.2mm is defined as Microspring. Available mandrel sizes are 0.5mm, 0.9mm, 1.15mm, 1.6mm, 2.4mm, 3.2mm.
The listing price is for per 5mm. If multiple units are ordered, a continuous length will be sent out unless said otherwise in the comments box.
For bigger Springs, please check “Helical Springs” listings.
For special designs or sizes, please feel free to contact us: [email protected].
Transition Temperature | ||
| Tag | Transition Temperature(°C/°F) | Effect |
| SuperElastic | -15/5 | Austenitic at room temperature |
| Air Temp | 20/70 | Martensitic in a cool environment(freezer, ice water…) and changes to set shape when brought to room temp. |
| Body Temp | 35/95 | Martensitic in a cool environment(freezer, ice water…) and changes to set shape when held in hands. |
| Standard Temp | 45/115 | Martensitic at room temperature and change to set shape when heated to 45°C and above. |
| High Temp | 80/180 | Martensitic at elevated temperatures and changes to set shape when heat to 80°C and above. |
| Note: Heat can be generated electrically. | ||
Pitch | ||
| Pitch is the distance between the center of two consecutive wraps of wire | ||
Mandrel size
Determines the inside diameter of the spring.
| Wire Size(mm) | 0.25, 0.4, 0.5, 0.75, 1, 1.25, 1.5, 2, 3 |
|---|---|
| Mandrel Size | 0.5mm, 0.9mm, 1.15mm, 1.6mm, 2.4mm, 3.2mm |
| Pitch | Tight, wire size x 2, wire size x3, wire size x4 |
| Transition Temperature(°C) | -15C, 20C, 35C, 45C, 80C |
