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Spring phosphor bronze sheets, copper (spring and soft) and brass (spring and soft)

phosphor bronze: A mixture of copper, phosphorus and tin is called phosphor bronze, which is represented by the CUSN symbol and its base is copper with a ratio of about 0.5% to 11% tin and about 0.01% to 0.35% of phosphorus. Phosphor is a chemical element that is represented by the symbol P, and the phosphor element increases the properties of abrasion resistance and hardness. And also the tin element with the symbol Sn, which increases the properties of corrosion resistance and strength.

Another characteristic of bronze phosphorus is hardness, strength, low coefficient of friction and suitable graining, and the sheet of bronze phosphor is widely used for maintaining mechanical properties, as well as good electrical conductivity, and in some cases to maintain the springy state of the piece.

Copper is a metallic element with a high degree of electrical conductivity and high thermal conductivity, which is represented by the cu symbol, orange or red, which is also soft, flexible, with high weldability, and Two types are springy copper with a slightly higher strength and elasticity and a soft copper that is smoother and more ductile.

Brass contains a series of copper alloys with up to 40% zinc (Zn). By changing the value, the properties of the CU-Zn alloys also change, and the brass is also yellow, which is similar to the color of gold, which is a copper and zinc alloy, which has high strength and strong conductivity properties.

Phosphor Bronze Grade: Cusn6 – Cusn8

Brass Grade: 65b – 70b


  • Phosphor Bronze Hardness: 200 HV to 260
  • Brass Hardness: 120 HV to 200HV
  • Thickness: 0.02 mm min to 12 mm max
  • Width: 5 mm min to 660 mm max


  • سختی فسفر برنزها: حدوداً بین 200 تا 260 ویکرز
  • سختی برنج ها: حدوداً بین 120 تا 200 ویکرز
  • ضخامت: از 0.02 میلیمتر تا 12 میلیمتر
  • عرض: از 5 میلیمتر تا 660 میلیمتر

Usages and applications

Phosphor Bronze (spring phosphor bronze) is of particular importance in the electrical and electronic industries due to its mechanical properties, especially at high temperatures as well as the high conductivity of electrical power (parts and washer, bolts and barbs in the electric power industry Manufacturing of lamps, fluorescent lamps, switches, sockets and electrical connectors is very costly.) It also has a lot of uses in the automotive industry, such as the manufacture of components that have electrical properties and conductivity, and firmness and elasticity and must maintain their appearance. Uses Including in electric car parts behind the ampere and the car’s km section and bullet parts and fuse distributor and manufacturing vehicles and parts washers, flat, wavy plate is used.) – Military industries use the above-mentioned sheets for the military and military electrical industries and radars and parts that should maintain a strong conductivity of electric current and shields and preserve the appearance of the piece. In the home appliance section, the electrical and electrical conductivity of the electric current (electric and gas components, ovens, microwave ovens, electric refrigerators, dishwashers, washing machines, etc.), as well as in the different industrial sector such as aircraft industries and oil, gas and petrochemical industries, cement and ceramic tile machines, as well as in the manufacture of machinery for box and cardboard and paper, is also widely used.



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