Phosphorus Bronze Spring

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Phosphor Bronze Springs: Durable and Versatile for Various Applications

Phosphor bronze, a copper-based alloy, is widely recognized for its exceptional properties, making it an ideal material for manufacturing springs. At HSI, we offer a diverse range of phosphor bronze springs tailored to meet various industrial requirements.

Properties of Phosphor Bronze

Phosphor bronze exhibits several key properties that make it an excellent choice for spring manufacturing:

  • Wear Resistance: Phosphor bronze is highly resistant to wear, ensuring longevity and durability.
  • Fatigue Resistance: The alloy has high fatigue resistance, making it suitable for applications involving repetitive motion or cyclic loading.
  • Corrosion Resistance: Phosphor bronze offers excellent resistance to corrosion, ensuring reliability even in harsh environments.
  • Tensile Strength: It possesses good tensile strength, providing the necessary strength for spring applications.
  • Machinability: Phosphor bronze is easy to machine, allowing for precise fabrication of complex spring designs.
  • Solderability and Formability: The alloy exhibits good solderability and formability, facilitating easy manufacturing processes.
  • Electrical Conductivity: It has excellent electrical conductivity, making it suitable for electrical applications.
  • Ductility: Phosphor bronze is highly ductile, enabling it to withstand deformation without fracture.

Advantages of Phosphor Bronze Springs

Phosphor bronze springs offer numerous advantages, including:

  • Repetitive Motion Tolerance: They can tolerate repetitive motion without compromising performance or integrity.
  • Resistance to Strain: Phosphor bronze springs are more resistant to strain compared to non-alloy components.
  • Corrosion Resistance: They offer exceptional resistance to corrosion, ensuring reliability in corrosive environments.
  • Versatility: Phosphor bronze is a versatile material suitable for a wide range of applications.
  • Electrical and Thermal Conductivity: These springs exhibit good electrical and thermal conductivity, making them suitable for various electrical and electronic applications.
  • Moisture and Oil Resistance: They resist moisture and oils, making them ideal for applications such as wind instruments.


Phosphor bronze springs find application in diverse industries and applications, including:

  • Marine Fuel Pumps
  • Oil Rigs
  • Oil Pipeline Valves
  • Computers
  • Automotive Shock Absorbers, Stabilizers, and Gearboxes

Contact Us

At HSI, we prioritize our customers' design requirements to provide tailored solutions. For all your queries and design requirements related to phosphor bronze springs, please contact us at Our experienced staff is dedicated to assisting you with your spring needs.

Choose HSI for durable and versatile phosphor bronze springs designed to meet your specific industrial requirements.

Phosphor Bronze Springs Specifications

We have phosphor bronze springs of following specifications available with us:

Maximum Operating Temperature200°F
Nominal ChemistryCu 94.0 – 96.0%

Sn 4.0 – 6.0%

Modulus of Elasticity (E)15 (103)
Modulus in Torsion6.25 (43.1)
Minimum Tensile Strength (psi x 103)105-145
Rockwell HardnessB98-104
Density (lb/in3)0.32
Gravitational Constant63,000,000
Size Range0.003ʺ to 0.468ʺ
StandardASTM B159

Chemical Composition of Phosphor Bronze Springs

The chemical composition of these types of springs is:

Zinc0.30% max.
Iron0.10% max.
Lead0.05% max.

About Us

Welcome to Hariome Spring Industries, a premier destination for top-quality springs in India. Established in 1989, we have been at the forefront of spring manufacturing, offering a comprehensive range of heavy-duty springs, wire springs, strip springs, and wire forms to meet diverse industrial needs.

Driven by a commitment to innovation and excellence, we prioritize technological advancements, continuous improvement, and unwavering dedication to quality. Our experienced and skilled production team ensures the fabrication of superior-quality springs, continually enhancing our manufacturing processes to meet evolving standards.

At Hariome Spring Industries, we boast a wide manufacturing range, capable of producing wire springs ranging from 0.1mm to 40mm. Our extensive product lineup includes compression springs, tension springs, torsion springs, back rod springs, extension springs, taper springs, flexible springs, hook springs, bevel springs, conical springs, Belleville springs, R clips, C clips, metal stamping springs, spring washers, wire forms, and more. Additionally, we offer customized spring solutions tailored to our customers' specific requirements.

Experience reliability, precision, and excellence with Hariome Spring Industries – your trusted partner for premium-quality springs in India.

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