What are the primary materials used in high-pressure steel-wire-braided hose assemblies?

　　 High-Pressure Steel Wire Braided Rubber Hose Assembly Materials used are categorized into non-metallic and metallic materials. Commonly employed non-metallic materials in production include nitrile rubber, styrene–butadiene rubber, and chloroprene rubber. Ethylene–propylene–diene monomer (EPDM), chlorosulfonated polyethylene, natural rubber, and hydrogenated nitrile rubber are increasingly being incorporated into products manufactured by high-pressure wire‑braided hose producers, enabling the creation of high‑performance, high‑value‑added high‑pressure hoses. Non-metallic reinforcing materials comprise nylon and polyester fibers.

　　With the development of the textile industry, high-performance materials such as aramid fibers have increasingly been employed in high-pressure hoses. Metallic components include copper‑plated steel wires with circular cross‑sections and galvanized steel wires used as reinforcing elements. As computer‑aided simulation and testing technologies have advanced, high‑pressure wire‑braided hose assemblies now utilize flat conductors—elliptical copper‑plated wires.

　　 High-Pressure Steel Wire Braided Rubber Hose Assembly New materials used:

　　(1) EPDMEli (EPDMELI): Exhibits excellent heat resistance, steam resistance, weathering and aging resistance, chemical resistance, and superior electrical insulation properties, particularly outstanding resistance to glycol‑ether brake fluids and vegetable oils. It is suitable for manufacturing high‑pressure hoses that are resistant to heat, steam, and severe corrosion.

　　(2) Chlorosulfonated polyethylene rubber: It exhibits excellent resistance to ozone, weathering and aging, as well as outstanding chemical resistance, flame retardancy, oil resistance, and heat resistance. It is suitable for manufacturing high-pressure hoses that must withstand highly corrosive media, resist flame and ozone‑induced aging, and perform reliably in harsh atmospheric conditions.

　　(3) Rubber: Excellent resistance to weathering and aging; good oil resistance and chemical resistance; excellent flame retardancy and low gas permeability, making it suitable for manufacturing high-pressure hoses that are oil‑resistant, ozone‑resistant, weather‑aging‑resistant, and have low gas permeability.

　　(4) Hydrogenated nitrile rubber: It exhibits excellent oil resistance, corrosion resistance, resistance to high and low temperatures, antioxidant stability, dynamic fatigue resistance, and ozone resistance. It is suitable for manufacturing high-pressure hoses with special requirements such as oil resistance.

　　(5) Nitrile rubber/polyvinyl chloride: resistant to oil, abrasion, and ozone. It exhibits excellent extrudability and is easy to process, making it suitable for producing the outer adhesive layer of high-pressure hoses used in abrasive and ozone‑exposed environments.

　　(6) Aramid fiber: It boasts exceptional properties, including ultra-high strength, high modulus, excellent resistance to high temperatures, and superior resistance to acids and alkalis, while being lightweight—about seven times lighter than steel wire. Its tensile modulus is 2–3 times that of electrical wire or glass fiber, and its toughness is twice that of steel wire, yet its density is only about one-fifth that of steel. It remains stable at 450°C without decomposing or melting, and exhibits excellent insulation and aging‑resistance characteristics, resulting in a long service life.

　　(7) Flat wire: It exhibits high strength, high modulus, excellent high‑temperature flexural resilience, and favorable pressure‑resistance performance. In particular, it demonstrates superior torsional and bending deformation capabilities. High‑pressure rubber hoses reinforced with flat steel wire—whether braided or wrapped—deliver significantly better pulse‑performance than those reinforced with high‑strength (ultra‑high‑strength) steel wire.