Halogen-Free High-Temperature Wire

Updated: 2026-07-15

Overview

Halogen-free high-temperature wire is engineered for demanding environments where conventional cables fail. Its halogen-free construction eliminates toxic gas emissions during combustion, making it critical for confined spaces like aircraft or underground installations. The wire’s core comprises tinned copper for oxidation resistance, while advanced polymers (e.g., XLPE or silicone) provide insulation. This combination ensures stability under continuous thermal stress, often exceeding 200°C, without compromising electrical integrity.

Structure and Working Principle

The wire typically features a stranded copper conductor coated with tin to prevent degradation. Insulation layers use halogen-free materials that resist thermal expansion and chemical corrosion. When exposed to heat, the insulation maintains dielectric strength, preventing short circuits. Unlike PVC-based wires, it emits minimal smoke and non-corrosive gases, crucial for safety in emergencies.

Key Features

Flame retardancy is achieved through phosphorus or nitrogen-based additives, meeting standards like IEC 60332. The wire also exhibits low dielectric loss, suitable for high-frequency applications. Flexibility varies by design; some variants incorporate fiberglass braiding for mechanical protection without sacrificing pliability. Color-coding options simplify installation in complex systems.

Application Areas

Common in automotive harnesses near engines, industrial ovens, and renewable energy systems (solar/wind), where heat and vibration are prevalent. Aerospace uses include cockpit wiring due to stringent fire-safety norms. Data centers deploy these wires in server racks to mitigate fire risks, while oil rigs rely on their corrosion resistance in salty, high-heat environments.

Maintenance and Precautions

Regular inspections should check for insulation cracks or discoloration, indicating thermal aging. Avoid sharp bends during installation to prevent conductor damage. Storage in dry, UV-protected areas extends shelf life. For extreme conditions, consult manufacturer guidelines on maximum continuous temperature exposure.

B2B Procurement Guide

Bulk buyers should request material datasheets and test reports (e.g., UL 758 or EN 50618). MOQs often start at 1,000 meters, with discounts for larger orders. Lead times vary; specialty coatings (e.g., PTFE) may require 4–6 weeks. Partner with suppliers offering traceability and batch testing, especially for aerospace or medical applications.