Beryllium Copper (BECOL-25)

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Beryllium Copper (BECOL-25)

BECOL-25 (Alloy 25) is a 2% beryllium copper alloy capable of attaining the highest strength and hardness of any commercially available copper based alloy.

It is supplied in solution heat treated condition for optimum workability prior to precipitation hardening by the customer to develop its full strength and hardness.

Beryllium copper is particularly well suited to machining into intricate shapes. In the age hardened condition, its machinability is comparable to many other copper alloys and superior to that of stainless steel. It also has better dimensional stability than any other copper alloy.

Related Specifications of beryllium copper

  • Alloy 25
  • CB101
  • C17200
  • CW101C
  • ASTM B196
  • CDA 17200
  • 2.1491
  • NF A51-114
  • CuBe2
  • CuBe1.9 (FR)

Nominal Composition of beryllium copper

Cu rem, Be 1.8%, Ni & Co 0.5%

Key Features of beryllium copper

  • Exceptional strength
  • Very high hardness
  • High corrosion and stress corrosion resistance
  • Good electrical and thermal conductivity
  • High modulus of elasticity
  • Very low magnetic permeability
  • Excellent formability (solution treated condition)
  • Good soldering and brazing characteristics
  • Good fatigue strength
  • High impact strength
  • Good elevated temperature and cryogenic strength
  • Excellent dimensional stability
  • Outstanding reflectivity
  • Very high resistance to galling and wear
  • Excellent spring properties
  • Spark resistance

Applications of beryllium copper

Aerospace | Landing gear, bearing bushes and high performance fasteners

Automotive | Valve guides, bushes and valve seats

Offshore & marine | Offshore drilling and instrumentation equipment, downhole tooling, valve, pump and shaft components

Other | Deep drawing tooling, plastic moulding dies, tools and plungers, die-casting plunger tips, non-magnetic and non sparking tools; electrical and electronic connectors, springs, fasteners, switchgear, resistance welding electrodes and equipment; flash butt welding dies and inserts; seam welding electrode shafts

Case Study

Beryllium copper: timekeeping balance wheel

Columbia Metals – a leading supplier of beryllium copper

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of beryllium copper and other high quality specialist engineering alloys.

To buy or learn more about beryllium copper contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB  
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