A Complete Revelation of Wire Materials and Standards

Wires play a crucial role in the manufacturing process of automotive wiring harnesses. Therefore, wiring harness manufacturers often attach great importance to accumulating experience in cable production and effectively controlling cable costs. In fact, many globally renowned large wire harness manufacturers originated from the wire and cable industry.

Automobile wires are classified according to different standards during the manufacturing process. These standards include Japanese standard wires, German standard wires, American standard wires and Chinese standard wires, etc. Meanwhile, according to the uses of wires, they can be classified into primary single-core wires, twisted-pair wires (composed of multiple primary wires), shielded wires, sheathed wires, multi-core cables and cables, etc. In addition, automotive wires also need to be classified according to the corresponding type of vehicle, such as low-voltage wires for automobiles and wires for new energy vehicles. In German standard automotive wires, there are standards such as DIN 72551 and VW 60306, which cover specific types of wires such as FLR, FLRY and FLYW. When naming these wire models, specific marks are usually included to identify their attributes.

1. Basic signs

FL Low-voltage wires for automobiles

2. Specific structural marks

F flat cable

R Thin-walled insulation

Z multi-core cable

3. Marking of insulating materials and sheathing materials

Material code, Chinese and English names, Working temperature range, ℃

Y PVC (polyvinyl chloride) -40 to 90

YK low-temperature resistant PVC 40 ~ 90

Heat-resistant PVC

Operating temperature range: -40 to 125℃

The working temperature range of PE (polyethylene) is from -40 ℃ to 90℃.

The working temperature range of PA (polyamide) is from -50 ℃ to 105℃.

The working temperature range of FEP (tetrafluoroethylene/hexafluoropropylene copolymer) is from -65 ℃ to 200℃.

The working temperature range of E/TFE (ethylene/tetrafluoroethylene copolymer) is from -65 ℃ to 180℃.

The working temperature range of PP (polypropylene) is from -40 ℃ to 125℃.

The operating temperature range of PFA (perfluoroalkoxane) is from -80 ℃ to 260℃.

The working temperature range of TPE-U/TPU (thermoplastic polyurethane elastomer) is from -40 ℃ to 125℃.

The working temperature range of TPE-E (polyether-based thermoplastic polyester elastomer) is from -40 ℃ to 90℃.

The working temperature range of TPE-E (polyester-based thermoplastic polyester elastomer) is from -40 ℃ to 150℃.

The working temperature range of TPE-S (thermoplastic polystyrene elastomer) is from -40 ℃ to 125℃.

The working temperature range of TPE-A (thermoplastic polyamide elastomer) is from -50 ℃ to 90℃.

The working temperature range of TPE-O (thermoplastic polyolefin elastomer) is from -40 ℃ to 125℃.

The working temperature range of E/VA (ethylene/vinyl acetate copolymer) is from -40 ℃ to 140℃.

The working temperature range of PVC-X (cross-linked polyvinyl chloride) is from -40 ℃ to 105℃.

4. Description of shielding layer material and shielding method marking:

B. Metal foil shielding

C. Copper wire weaving

D. Winding shielding

P. Insulating film

5. Conductor structure marking description:

A. Concentric stranded conductor structure, characterized by an odd number of wire cores, and one of the wire cores is located at the center of the conductor cross-section.

B. Twisted conductor structure.

6. Color identification signs

The color should follow the combination of the base color, the first signature color and the second signature color.

7.Application Examples

In various complex environments, multi-core PVC insulated and sheathed combined shielded low-voltage cables have demonstrated outstanding performance. It can work stably whether in high or low temperatures. Within the temperature range of -40℃ to +90℃, it can ensure smooth and secure communication.

FLRY-B type automotive wire

● Product Name

Thin-walled polyvinyl chloride insulated low-voltage cable (Type B stranded conductor)

● Product Features

This product adopts soft copper wire that complies with the DIN 40500.4 standard and is twisted with type B conductors in accordance with the provisions of DIN 72551.6. Its performance strictly complies with the standards of DIN 72551.5 and VW 60306. This wire can operate stably within a wide temperature range from -40℃ to 105℃.

2. FLRY-A type automotive wire

● Product Name

Low-voltage cable with thin-walled polyvinyl chloride insulation and type A stranded conductor.

● Product Features

This product adopts soft copper wire that meets the DIN 40500.4 standard and is twisted together with type A conductors in accordance with the provisions of DIN 72551.6. Its performance strictly complies with the standards of DIN 72551.5 and VW 60306. In addition, this wire can maintain stable operation within a wide temperature range from -40℃ to 105℃.