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ELECTRONIC SPRING AND CONNECTOR ALLOYS ALLOY 174 / BRUSH® 60


When conductivity and stress relaxation resistance are critical design considerations, Alloy 174 (UNS C17410) and Brush® 60 (UNS C17460) offer engineers and designers the opportunity to upgrade component performance over those made of bronzes and brasses. Materion’s high performance copper beryllium alloys have yield strength up to 125 ksi, which is superior to traditional strip alloys such as phosphor bronze, silicon bronze, aluminum, brass and copper nickel alloys.

When compared to conventional alloys, advanced Alloy 174 and Brush 60 provide 5 times the electrical conductivity and superior resistance to stress relaxation. These strip alloys offer an excellent combination of elastic modulus, strength, formability and conductivity.

Both alloys are available as mill hardened strip. The hardening process provides them with greater contact force and conductivity, improving their signal transfer.

When design applications require miniaturizing, Alloy 174 and Brush 60 ensure electrical connections perform well in high temperature environments, and they better handle highly repetitive cycle life.

Read our brochure on Alloy 174 to get more details on material applications and technical specifications.

APPLICATIONS FOR HIGH CONDUCTIVITY ALLOYS

COPPER BERYLLIUM ALLOY 174

Alloy 174, a mill hardened copper beryllium strip material, improves the performance of automotive, appliance and telecom connector applications. Alloy 174 features twice the electrical conductivity of brass, has a high repetitive cycle life and is easily formed into complex shapes.

This alloy is available with tin coatings or with precious metal inlays and even when miniaturized will maintain the spring force to provide a reliable contact. Alloy 174 is used for automotive terminals, spring contacts for switches and relays, and connectors for appliances and consumer electronics.

Learn more about Alloy 174 strip physical and mechanical properties, forms, sizes and tolerances by downloading our Alloy 174 data sheet.

COPPER BERYLLIUM BRUSH® 60

Brush 60 is a high conductivity, copper beryllium strip alloy specifically engineered to meet demanding electronic and mechanical connector requirements. This alloy is formed with advanced processing techniques, but is still a cost efficient option for demanding designs.

Brush 60 exhibits outstanding stress relaxation and is able to retain a higher normal force over the life of the connector. In strip form, Brush 60 creates more stable electrical conductivity in telecommunications and computing applications.

Read more about Brush 60 physical and mechanical properties, sizes and tolerances, view our Brush 60 data sheet.

ALLOY 174 & BRUSH® 60 SPECIFICATIONS & STANDARDS

We work to ensure our materials are compliant with ASTM and UNS standards for easier integration with existing projects and specifications. Below are the specifications and standards from ASTM International that our products use.

Alloy

Strip

CuBe Alloy 174

ASTM B 768, ASTM B 888, UNS C17410

CuBe Alloy Brush 60

ASTM B 768, ASTM B 888, UNS C17460


As components become smaller and signal requirements become more stringent, selecting the right materials is increasingly important. Total cost solutions demand materials which provide design flexibility, ease of manufacturing and life cycle reliability.

If your application requires durable electronic connectors, talk with our strip alloy engineers to request more info on Alloy 174 and Brush 60.