NiTi Alloy

# FireWire Heat Treatment

FireWire is EdgeEndo's proprietary annealed heat treatment applied to NiTi wire, resulting in a predominantly martensitic alloy at body temperature with minimal shape memory. The process yields files with no imposed canal transportation forces, as the file conforms passively to canal curvature. EdgeEndo reports FireWire-treated files achieve up to 5× greater cyclic fatigue resistance compared to WaveOne Gold, with WaveOne-compatible motor settings for easy integration into existing reciprocating motor programs. FireWire systems are available in both continuous rotation (EdgeFile X7) and reciprocating (EdgeOne Fire) configurations.

## Metallurgical Properties

Af Temperature~45–55°C (annealed)

Phase at 37°CMartensite

FlexibilityVery High (no shape memory)

Cyclic FatigueUp to 5× greater than WaveOne Gold

[Compare all heat treatments→](https://endo-guide.app/alloy/heat-treatment-comparison)

## Systems Using FireWire Heat Treatment

[### EdgeFile X7 EdgeEndo Rotary Fire-Wire™ · .04/.06 · 14 files Fire-Wire Crown-Down Rotary](https://endo-guide.app/system/edgefile-x7)[### EdgeOne Fire EdgeEndo Reciprocating FireWire™ · variable · 5 files FireWire Reciprocation](https://endo-guide.app/system/edgeone-fire)[### EdgeTaper Platinum EdgeEndo Rotary FireWire™ · constant (per file) · 8 files ProTaper-Compatible FireWire Sequence](https://endo-guide.app/system/edgetaper-platinum)[### EdgeGlidePath EdgeEndo Rotary FireWire™ · variable · 1 files FireWire Rotary Glide Path](https://endo-guide.app/system/edgeglidepath)[### EdgeEvolve EdgeEndo Rotary FireWire™ · 4-10% · 21 files Moderate Access, Deep Apical Shape](https://endo-guide.app/system/edgeevolve)

## Related Clinical Links

NiTi collections

[Glide Path Files](https://endo-guide.app/niti-files/glide-path-files)[Reciprocating Systems](https://endo-guide.app/niti-files/reciprocating-file-systems)[Rotary Systems](https://endo-guide.app/niti-files/rotary-file-systems)[Single-Use Systems](https://endo-guide.app/niti-files/single-use-niti-files)

Clinical use cases

[Severe Curvature](https://endo-guide.app/use-case/severe-curvature)

Related alloys

[Gold Heat Treatment](https://endo-guide.app/alloy/gold)[Blue Heat Treatment](https://endo-guide.app/alloy/blue)[CM-Wire (Controlled Memory)](https://endo-guide.app/alloy/cm-wire)[C.Wire (Controlled Memory)](https://endo-guide.app/alloy/c-wire)

![Uzm. Dt. Levent Yüksel](https://endo-guide.app/images/levent-yuksel.jpg)

Reviewed by

Uzm. Dt. Levent Yüksel

DDS · Endodontist

Endodontist — DDS, Hacettepe University; endodontics specialty training, Ankara University. 10+ years of clinical experience. Sole author and reviewer of EndoGuide content.

[About the author](https://endo-guide.app/about)[Editorial policy](https://endo-guide.app/editorial-policy)[Clinical profile](https://drleventyuksel.com/)

[Back to all systems](https://endo-guide.app/)

---

Canonical HTML: https://endo-guide.app/alloy/fire-wire · Agent guide: https://endo-guide.app/llms.txt