INTRODUCTION TO Phosphor Bronze

Phosphor bronze is uniquely suited for a wide range of uses, including springs, switch parts, fuse clips, electrical connectors, and welding rods. Phosphor bronze has outstanding resistance to corrosion and fatigue, and exhibits excellent electrical conductivity. It is ideally suited for use within marine environments.

1140x560_0006_Phosphorous-Bronze

Product Specification

Phosphor Bronze Product Specifications

Our primary phosphor bronze offering is alloy 510, ASTM B103 in half-hard, full-hard, and spring tempers. Most tempers are available in thicknesses ranging from 0.005 to 0.125. We have other phosphor bronze alloys and tempers available, as well.

Our alloy 510 phosphor bronze and other phosphor bronze varieties are available in sheet and in coil. All phosphor bronze can be ordered in high-volume and low-volume quantities.

Phosphor Bronze
Physical & Chemical Properties

Phosphor Bronze Chemical Specifications

ASTM B103

Alloy 510

UNS Number C51000

    Tensile Strength

Rockwell B Scale 

(reference only)

 Superficial

(30-T Scale)

 ASTM Specification  Temper min-max psi  min-max  min-max 
Annealed Annealed 43-58  12-64 24-59
H02 1/2 Hard 58-73 60-85 53-73
H04 Hard Tempered 76-91 84-93 71-78
H06 Extra Hard 88-103 89-96 74-81
H08 Spring Temper 95-110 92-98 76-82
H10 Extra Spring 100-114 94-99 77-83



Phosphor Bronze Chemical Composition %
ASTM A666
Alloy
UNS Designation
Tin Phosphorus  Iron, max  Lead, max   Zinc, max Copper 
510 C51000 4.2-5.8  .030-.35 0.10 0.05 0.30 remainder
*Other Alloys Available
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Ordering

Minimum Order Quantities

Our Minimum Order Quantities enable us to suit metal product orders of all sizes. Every metal product we provide has its own MOQ, and for phosphor bronze, our MOQ is 5-7 lbs. While we can, and will, support orders for quantities smaller than this, the minimum lot charge will remain the same for any quantities ordered at, or below, a metal’s MOQ. Additional variables apply depending on material thickness, width, and additional processing.

Production Process

740x455_0003_Phosphorous-Bronze
1

Copper, tin, and phosphorus make up phosphor bronze

2

The three metals are melted together to form the new alloy

3

The final alloy is made up of 95% copper

Pros/Cons

Pros:

  • Easy and clean to cast
  • Good electrical conductivity
  • Moderate cost
  • Fatigue-resistant
  • Corrosion-resistant
  • Strong
  • Low metal-on-metal friction
  • Excellent elasticity

Cons:

  • Limited availability within its market
  • Prices fluctuate often
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Applications

Industrial-Components

Industrial Components

Phosphor bronze is known for high performance, processability, and reliability. It's used to make parts for many industrial fields. It's an alloy of copper containing both tin and phosphorus. This gives the metal more fluidity in its molten state, allowing for easier casting and molding processes like press punching, bending, and drawing. 

It's commonly used in the manufacturing of springs, fasteners, and bolts. These parts need to be resistant to fatigue and wear while exhibiting high elasticity. Digital electronics, automatic controllers, and automobiles all contain parts made with Phosphor Bronze. 

Marine

Marine

To be considered marine-grade, the material used in underwater components must be able to resist corrosive effects common to water environments. 

Components like propellers, propeller shafts, pipes, and marine fasteners made from phosphor bronze possess very good resistance to corrosion and fatigue.

Dental

Dental

As strong as phosphor bronze is, its properties also lend themselves to delicate, everlasting application in dental bridges.

The benefit in dental work is its resistance to corrosion. Used to provide the basis for tooth implants, dental bridges made with phosphor bronze typically maintain their shape over time, and can be used to make partial or full implants.

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Are you in need of phosphor bronze? Let us know the quantity, specifications, and delivery date you need, and we'll provide you with a quote typically within 2 hours or nearly guaranteed same day.

Stock Items

Looking for Phosphor Bronze?

Our primary phosphor bronze offering is alloy 510, ASTM B103 in half-hard, full-hard, and spring tempers. Each temper is available in thicknesses ranging from 0.004 to 0.125. We have other phosphor bronze alloys and tempers available, as well.

Our alloy 510 phosphor bronze and other phosphor bronze varieties are available in sheet and in coil. All phosphor bronze can be ordered in high-volume and low-volume quantities.