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Alloy 175 Beryllium Copper

Sequoia Brass & Copper sells alloy 175 beryllium copper. Beryllium copper (BeCu), also known as copper beryllium, beryllium bronze and spring copper, is a copper alloy with 0.53% beryllium and sometimes with other alloying elements.

Beryllium copper combines high strength with non-magnetic and non-sparking qualities. It has excellent metalworking, forming and machining qualities. It has many specialized applications in tools for hazardous environments, musical instruments, precision measurement devices, bullets, and aerospace. Beryllium-containing alloys create an inhalation hazard during manufacturing due to their toxic properties. Alloy 175 beryllium copper is age-hardenable and provides excellent electrical conductivity in combination with good physical properties and endurance strength. Provided in either the age-hardenable condition or as tempered ware, they are used in springs and wire forms which are electrical conductors, or where retention of properties at elevated temperatures is important. Common fabrication processes for 175 beryllium copper are blanking, drilling, forming and bending, tapping, and turning.

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  Cu Al Be Co Si Fe
Min/Max Rem .2 .40 - .70 2.4 - 2.7 0.2 .1
Nominal 96.9 0.55 2.6
Joining Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Spot Weld Good
Seam Weld Fair
Butt Weld Fair
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Good
Machinability Rating: 40
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Common Fabrication Processes For
175 Beryllium Copper

Blanking, drilling, forming and bending, tapping, turning

Typical Uses

Connectors, conductors, relay parts, switch parts, fuse clips
Seam welding dies, resistance and spot welding tips, tooling for plastic molds, resistance welding equipment, springs, die casting plunger tips, stressed parts