What are the common materials for M8 cable adapters?

1, Shell material
The shell material is the main component of the M8 cable adapter, which not only protects the internal electrical connections but also withstands various challenges from the external environment. Common shell materials include:
PA (polyamide, nylon): PA material has excellent wear resistance, chemical resistance, and high mechanical strength, making it an ideal choice for M8 cable adapter housings. Especially in applications that require high temperature resistance and wear resistance, PA materials perform well.
PBT (polybutylene terephthalate): PBT is a thermoplastic with good mechanical strength, heat resistance, and chemical stability. By adding fiberglass, its performance can be further enhanced, making it more sturdy and durable. PBT material is commonly used in M8 cable adapters that require high temperature and environmental conditions.
Brass and aluminum alloy: In some high-end or special applications, the housing of M8 cable adapters may be made of metal materials such as brass or aluminum alloy. These materials have good electrical conductivity and mechanical strength, while providing higher corrosion resistance and wear resistance. However, due to the high cost of metal materials, their use is relatively limited.
2, Contact materials
The contact material is the part used for electrical connection in M8 cable adapters, and its conductivity and corrosion resistance are crucial to the performance of the adapter. Common contact materials include:

Phosphobronze: Phosphobronze has a higher hardness than brass and can maintain elasticity for a longer period of time. It is suitable for contacts with working temperatures below 300 degree , and for most M8 cable adapters, phosphor bronze can provide good reliability.

Coating material: In order to improve the conductivity and corrosion resistance of the contact, a coating such as gold plating, nickel plating, etc. is usually applied to the surface of the contact. Electroplated layers can not only improve the conductivity of connectors, but also provide corrosion protection. The gold plating layer can provide excellent conductivity and corrosion resistance, especially in high-frequency signal transmission. The gold plating layer can reduce signal loss and improve signal quality.
3, Insulation material
The insulation material is the part of the M8 cable adapter used to isolate the contacts and prevent short circuits. Common insulation materials include:
PBT (polybutylene terephthalate): In addition to being used as a shell material, PBT is also commonly used for the insulation part of M8 cable adapters. It has good mechanical strength, heat resistance, and chemical stability, which can meet the needs of most application scenarios.
NYLON (Nylon): Nylon material has excellent wear resistance and chemical resistance, suitable for applications that require high temperature resistance and wear resistance. Nylon 66 and nylon 6T are commonly used nylon materials with higher temperature resistance than PBT.
ABS (Acrylonitrile Butadiene Styrene): ABS has excellent comprehensive properties, including good mechanical strength, impact resistance, and ease of processing. However, its temperature resistance is relatively low, so its application in high-temperature environments may be limited.
PC (polycarbonate) and LCP (liquid crystal polymer): These two materials have higher temperature resistance and are suitable for applications in high-temperature environments. The temperature resistance of LCP is particularly outstanding, reaching 290 degree -320 degree , making it an ideal choice for insulation materials for M8 cable adapters in high-temperature environments.
4, External material
The outer material is the protective layer of the M8 cable adapter, which not only provides sufficient mechanical strength but also has good environmental resistance. Common exterior materials include:
PVC (polyvinyl chloride): PVC is a widely used cable cover material that has good dielectric properties and chemical resistance. The application temperature range of PVC is relatively wide, usually between -40 degree and+105 degree , which can meet the needs of most application scenarios.
PE (polyethylene): PE material has good electrical and physical properties, including high dielectric properties, low consumption, strong insulation ability, and good flame retardancy. It also has a wide range of applications in the outer coating material of M8 cable adapters.
PP (polypropylene): Polypropylene has excellent chemical stability and heat resistance, making it suitable for applications that require heat resistance and chemical corrosion resistance. In certain M8 cable adapters with special requirements, PP material may be used as the outer cover material.
PUR (Polyurethane): PUR material has excellent wear resistance, oil resistance, and high temperature resistance. In M8 cable adapters that require extreme environmental conditions, PUR outer cables can provide better protection.