Phosphor Bronze Sheet & Strip for Custom Springs and Stampings

Please note that we do not sell phosphor bronze or any other materials in raw form. Phosphor bronze sheet and strip are material options for custom springs, etc., manufactured by Peninsula Spring.

Offering a combination of good physical properties, fair electrical conductivity, and moderate cost, phosphor bronze is ideal for custom springs and custom stampings. Phosphor bronze is commonly used as a lower-cost alternative to Beryllium copper.

To discuss the material requirements of your custom manufacturing project, contact Peninsula Spring today.

Nominal Chemical & Physical Properties

  • Cu: 94.0 - 96.0%
  • Sn: 4.0 - 6.0%
  • Minimum tensile strength: psi x 103 95-110
  • Modulus of elasticity: psi x 106 15
  • Maximum operating temperature: 200°F (93°C)
  • Rockwell hardness: B94-98

Heat Treating Phosphor Bronze

Phosphor bronze is delivered in pre-tempered condition; as such, no further hardening can be achieved through heat treating. However, stress relieving is a common practice in the manufacturing of phosphor bronze flat springs and sheet metal stampings.

Manufacturing Custom Phosphor Bronze Springs & Stampings

Phosphor bronze is cold worked to the required temper. It is ideal for spring and wire form applications where corrosion resistance and electrical conductivity is a concern.

Common Trade Names

  • Phos. Bronze
  • UNS C51000
  • ASTM B103
  • ASTM B139
  • AMS 4510
  • AMS 4720
  • QQ-B-750
  • SAE J461
  • SAE J463

Contact Us for Phosphor Bronze Springs & Phosphor Bronze Stampings

Contact Peninsula Spring today to discuss your custom project. We look forward to working with you