Beryllium-Free Copper Alloys
Created at :
Mar 2, 2026
Beryllium-Free Copper Alloy - What does this mean?
When applicable to copper alloys "beryllium-free" simply means the alloy contains no intentionally added beryllium.
Copper-beryllium (CuBe) alloys normally contain 0.2-2.0% beryllium. When an alloy is labeled beryllium-free, it means:
- No Be is used in the melt
- The alloy does not rely on Be precipitation hardening
- Mechanical and electrical properties come from other alloying additions (Cr, Zr, Ni, Si, Sn, etc)
- Common beryllium-free heat treatable copper alloys often include: C15000 (CuZr), C18150 (CuCrZr), C18000 (CuNiSiCr), C72900 (CuNiSn)
Why this designation matters?
Fine beryllium dust is hazardous when inhaled, leading to chronic beryllium disease, OSHA regulations around machining CuBe alloys, strict workplace controls.
Changing Regulatory / Purchasing Requirements
Many industries now specify "no Be-containing copper alloy" for: automotive welding consumables, electronics manufacturing, aerospace and defense, general machining shops.
In summary, Class 2 electrode material (C18150 and C18200) and Class 3 electrode material (C18000) are excellent Be-Free options for copper alloy resistance welding material.