Copper-BerylliumContains berylliumIn production
NCB4
CuNi1Co1Be · C17540
70–650 MPaYield strength
240–760 MPaTensile strength
8–20 %Elongation
120–240 HBHardness HB
Specify this grade
Qualification packs are released after a short form. Export control applies.
Properties
Guaranteed values, by temper.
- Alloy family
- Copper-Beryllium
- Chemistry family
- CuNiCoBe
- Lead-free
- Yes
Forms
Forms & dimensions available
Bars7 variant(s)
Dimensional ranges and tolerances on request — machining and finishing are in house.
Standards
Standards & equivalences
- CW103C
- RWMA class 3 AWS J1.3 EN 12163 EN 12165 EN 12167 EN 12420
Product and process qualifications are listed above. Customer approvals are confidential and are not disclosed.
Alternatives
If this grade is not the right trade-off.
GradeChemistryYield strengthChoose it when
CB4CuCoBe610 MPaChoose it when a part must carry load while conducting current or heat, and beryllium is accepted in your process. If it is not, our copper-nickel-silicon and copper-nickel-tin families offer beryllium-free grades.