Silane‑Crosslinkable Flame Retardant PE for Auto Wire (YHS‑SAEJ125)

YHS‑SAEJ125

YHS‑SAEJ125 is a flame‑retardant silane‑crosslinkable polyethylene compound for automotive wires conforming to SAE J1128. It is engineered for GXL, TXL and SXL‑type wire insulation and fully RoHS‑compliant. This two‑component system requires blending base compound A and flame‑retardant catalyst masterbatch B at 60 wt% : 40 wt%, followed by extrusion and moisture curing. It delivers excellent low‑temperature toughness, high dielectric strength and outstanding thermal‑aging performance for automotive wiring applications.

✦ Silane‑crosslinkable PE compound ✦ automotive wire insulation ✦ SAE J1128 ✦ GXL TXL SXL ✦ RoHS compliant ✦ two‑component blend ✦ low‑temperature resistant ✦ thermal aging resistance

Technical Data

Technical Specifications

Typical physical property data, subject to batch test reports.

Properties	Unit	Typical value	Test Method
Density	g/cm3	1.14	ASTM D792
Tensile Strength	MPa	18.3	ASTM D638
Elongation at Break	%	352	ASTM D638
Brittle Temperature	℃	<-40	ASTM D746
Volume Resistivity (20℃)	Ω·m	1.6×10¹⁴	ASTM D257
Dielectric Strength (20℃,50Hz)	KV/mm	25	ASTM D149
Oxygen Index	%	26	ASTM D2863
Air Thermal Aging 155±2℃×168h - Variation of Tensile Strength	%	-15.3	ASTM D3045
Air Thermal Aging 155±2℃×168h - Variation of Elongation	%	-10.6	ASTM D3045
Hot Set Test 200℃,0.2MPa,15min - Hot Elongation	%	50	ICEA T-28-562
Hot Set Test 200℃,0.2MPa,15min - Permanent Deformation	%	0	ICEA T-28-562

⚠️ The above data are obtained with the composite of 60%wt A and 40%wt B after extrusion and moisture curing

Recommended

Extrusion Process

Barrel 1	Barrel 2	Barrel 3	Barrel 4	Die
135±5℃	155±5℃	165±5℃	170±5℃	180±5℃

Processing Guide

Recommended Processing Parameters

Extrusion process

A. Mix base compound A and flame-retardant catalyst masterbatch B by a ratio of 60:40.
B. General extruder screw for polyethylene is suitable for extrusion.

Curing condition

Curing can be done by immersion in hot water at 90°-95°C, or exposure to low pressure steam, or ambient atmospheric moisture. In all cases curing time depends on insulation thickness, temperature, relative humidity and quantity of wire on the reel.
Insulation thickness, mm：0.4 0.81 1.4
95℃ hot water or sauna curing time, hrs.： 1 2 5
Ambient curing time, days，25℃ , 80%RH： 2 4 7

Storage

Due to the moisture sensitivity of YHS-SAEJ125, the following actions should be considered:
-Packaging should remain sealed
-Avoid storage outside and in direct sunlight
-Use within 12 hours after opening packaging

Packaging

A is available in 24 kg/bag, and the shelf life is 12 months.
B is available in 32 kg/bag, and the shelf life is 12 months.