Hoses and fittings come in many different types and materials. Importantly, the material used for hydraulic hose fittings determines its performance. Hydraulic Adapters Suppliers describes the most common fittings made of plastic, steel, stainless steel, or brass.
Plastic fittings are generally considered to be more resistant to corrosion, but weaker and less durable. Therefore, despite their low price, they are the least popular choice for hydraulic applications. Metal fittings are more suitable due to their high-pressure rating. Steel fittings A mixture of iron and some other metals makes them more durable and improves heat resistance. For example, carbon steel fittings made from a mixture of iron and carbon can withstand temperatures from -65°F to 500°F.
Stainless steel fittings are used when the job requires a temperature range of -425°F to 1200F. They are an excellent choice for highly corrosive environments. Typically, they are rated up to 10,000 psi. Some specially designed stainless steel fittings are rated up to 20,000 psi. However, high prices make them less affordable, so other alternatives are often considered. Brass fittings are not as durable as stainless steel. They provide leak-free operation and comply with SAE, ISO, DIN, DOT, and JIS standards. The temperature range for brass fittings is -65°F to 400°F. They can withstand pressures up to 3000 psi, but lower pressure ranges are generally recommended. Aluminum fittings are much lighter than steel and are resistant to corrosion. Due to their lightweight, they are commonly used in the automotive industry.