Phosphor Bronze Flat Washer Frequently Asked Questions
Below are answers to some of the most common questions about phosphor bronze flat washers.
What are phosphor bronze flat washers?
Phosphor bronze flat washers are manufactured from copper-tin-phosphorus alloy, specifically Alloy 510. The addition of tin and phosphorus to copper significantly increases strength, hardness, wear resistance, and spring properties while retaining good corrosion resistance and electrical conductivity. Phosphor bronze is the material of choice for spring washers, electrical contacts, and bearing applications.
Why choose phosphor bronze over brass or copper?
Phosphor bronze has significantly higher tensile strength and hardness than either brass or copper, along with better fatigue and wear resistance. It retains its spring properties better under sustained loading than brass. For applications requiring a conductive, corrosion-resistant washer with spring-like resilience, phosphor bronze outperforms both brass and copper.
What are the typical applications for phosphor bronze washers?
Phosphor bronze washers are used in electrical connectors, switch components, relay assemblies, bearing bushings, marine hardware, and any application requiring a hard, conductive, corrosion-resistant washer. They are also used as spring washers and in applications where repetitive flexing would fatigue a brass or copper washer.
Can you make custom phosphor bronze flat washers?
Yes. Superior Washer manufactures custom phosphor bronze washers to your OD, ID, and thickness specifications. Contact us via the Quick Quote form or by phone.
Are your phosphor bronze flat washers made in the USA?
Yes. All phosphor bronze flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.
Phosphor bronze is one of several high-strength alloys we manufacture. Browse the full flat washers catalog to compare all available materials.
