YT516 Calendered Aramid Paper
YT516 Calendered Aramid Paper
Environmentally friendly calendered aramid paper with low halogen content. Designed specifically for electronic insulation, lithium battery barriers, and eco-conscious applications.
Priced per requirement — tell us grade, width, thickness and quantity and we quote against it.
Technical specifications
| Composition | 100% meta-aramid fibre |
|---|---|
| Thermal class | Class H (180 °C) / Class R (220 °C) |
| Thickness range | 0.05–0.76 mm (2–30 mil), typical |
| Width range | Slit 10–1,000 mm |
| Density | 0.7–1.1 g/cm³ calendered, 0.3–0.6 g/cm³ uncalendered |
| Dielectric strength | 10–35 kV/mm, varies with thickness and grade |
| Limiting oxygen index | ≥ 28% — does not melt or support combustion |
| Form | Reels, slit to width; sheets to size on request |
| Compliance | UL, CE, RoHS, REACH |
Typical values for this material class, given as a guide. The datasheet carries the property table, test methods and tolerances for the grade and is the governing document.
Overview
YT516 is a calendered meta-aramid paper made to a low-halogen specification. It carries the thermal and dielectric behaviour of a standard calendered aramid paper, with the halogen content held down for applications where combustion products matter as much as insulation performance.
That distinction matters in enclosed spaces and in battery systems. In a fire, halogenated materials release corrosive gases that damage electronics well beyond the point of ignition. Low-halogen construction limits that secondary damage, which is why the grade appears in electronics assemblies, lithium battery barriers and rolling stock.
Where YT516 differs
Mechanically and thermally it behaves like any good calendered aramid paper. What you are specifying when you choose YT516 is the material's behaviour under fire and its environmental profile:
- Low halogen content — limits corrosive off-gassing in a fire
- Eco-compliance — specified where end-of-life and material-declaration requirements are tight
- Electronics and battery use — chosen where the surrounding assembly is sensitive to what burns near it
Key properties
- Low halogen content — limits corrosive gas release in fire
- Continuous service at 180 °C (Class H), used to 220 °C (Class R)
- Calendered: dense, smooth, dimensionally stable
- High dielectric strength per unit thickness
- Inherently flame resistant, self-extinguishing
- Suited to material-declaration and end-of-life requirements
Applications
Lithium battery systems
Cell-to-cell and module barrier insulation, where thermal stability and fire behaviour are both design requirements.
Electronics
Insulation in enclosed assemblies where corrosive combustion products would damage nearby components.
Rail and transit
Applications governed by fire, smoke and toxicity requirements.
Motors and transformers
General Class H slot, phase and layer insulation where a low-halogen specification applies.
Standards and compliance
- UL recognised component — certification held by the manufacturer
- CE marked
- RoHS compliant
- REACH compliant
- Manufactured under ISO 9001:2015
Certificates of conformity and mill test certificates are supplied with each shipment. Third-party testing can be arranged on request where a specification demands independent verification.
Sizes, packing and supply
- Thickness: 0.05–0.76 mm, typical range
- Width: slit 10–1,000 mm
- Form: reels; sheets and die-cut parts to drawing
- Packing: moisture-barrier wrapped reels, palletised for export
Quality and inspection
Every consignment is inspected before shipment and supplied with its mill certificate. For repeat programmes we hold the approved specification on file so a reorder repeats a known outcome rather than reopening the conversation.
Frequently asked questions
What does low-halogen actually mean here?
That the halogen content is held below the threshold set by the applicable specification. The practical consequence is less corrosive gas released if the material is involved in a fire. The datasheet states the figures and the standard they are measured against.
Can I use YT516 anywhere YT510 is specified?
Thermally and mechanically it is a close substitute, but a substitution should be approved by whoever owns the specification. Send us the spec and we will tell you whether it is a straight swap.
Is it suitable for EV battery packs?
It is used for barrier insulation in battery systems. Whether it suits your pack depends on the thermal runaway strategy and the clearances involved — send the requirement and we will advise.
Does low-halogen affect dielectric performance?
Not materially. It remains a calendered aramid paper with the dielectric behaviour that implies. Values are on the datasheet.
What certification is available?
UL, CE, RoHS and REACH, with material declarations on request.
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Next step
Tell us the size and quantity
Send the thickness, slit width and annual volume for https://aramidpapers.com/wp-content/themes/aramidpapers and we come back with a costed offer, a firm lead time and the mill certificate you will receive with it.