Copper Cobalt Beryllium Strip / Copper Nickel Beryllium Strip

 

EN: CuCoBe / CuNiBe

UNS: C17410 / C17460

Standards: ASTM B768

description1
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Description

Quick Detail:
C17410 and C17460 alloy is a precipitation-hardened beryllium-nickel copper alloy renowned for its exceptional balance of high strength, electrical/thermal conductivity, and corrosion resistance.

 

Key Characteristics & Advantages:
Corrosion Resistance:excellent in seawater, freshwater, and atmospheric conditions (corrosion depth: 0.01–0.14 mm/year)35. Resists sulfuric acid (<80% concentration) but vulnerable to ammonia/nitric acid36.
Special Characteristics:Non-magnetic, spark-free on impact. Retains properties from cryogenic (−196°C) to elevated temperatures (300°C).
Machinability: 20–40% of free-cutting brass (requires carbide tools with cooling).
Formability/Weldability: Excellent cold/hot workability (e.g., forging, extrusion). Compatible with TIG, laser, electron beam, and brazing techniques

 

Chemical composition C17410(wt,%): 

Be Co  Ni Al Fe Cu
0.15-0.5 0.35-0.6 <0.2 <0.2 0.2 Rem.

 

Chemical Composition C17460(wt,%):
Be Ni Zr Sn Al Fe Si Cu
0.15-0.5 1.0-1.4 <0.5 <0.25 <0.2 0.2 <0.2 Rem.

 

 

  Physical and Mechanical property
Alloy   Temper Tensile Strength 50mm Elongation Hardness Eletric Conductivity
ksi MPa B,% HV0.5 HRB %, IACS
C17410

1/2HT

95-110 655-790 10-20 179-213 89-98 45
C17410

HT

110-130 760-895 7-17 220-287 95-100 45
C17460 3/4HT 115-135 790-930 >11 98-105 >50
C17460 HT 120-140 825-965 >10 99-106 >50

 
Core Applications:
C17410 and C17460 strip is widely used in high-reliability industries: