Alloy C17200

Alloy C17200 tubing,  BeCu sheet C17200,  Copper alloy C17200 bar

Beryllium copper (BeCu) alloy C17200, also known as Alloy 25, has superb electrical and thermal conductivity and extremely ductile. It is commonly used in parts that require high strength and electrical conductivity such as musical instruments, precision measurement devices, bullets and aerospace. LKALLOY is a leading supplier of Beryllium copper C17200. LKALLOY mainly supply ASTM B194 C17200 plates, ASTM B196 rods and bars of various size and specifications.

Available Forms And Specifications

C17200 Beryllium Copper of LKALLOY supplying is available in bars, rods and plates.

Sheet / Plate / Strip: ASTM B194, ASTM B 194, SAE J463, SAE J461
Seamless Pipe / Tube:  AMS 4535, ASTM B643
Round / Flat bar:  ASTM B196, AMS 4650, AMS 4651, AMS 4533, MIL C 21657, SAE J463, SAE J461
Wire:  AMS 4725, ASTM B197, SAE J463, J461

Chemical Composition

Cu Be Al Co Si

(nominal 98.1%)

1.8-2.0 0.2 max 0.2 min 0.2 max

Mechanical Properties

Density  lb/in³ 0.302
Elastic Modulus(10⁶ psi) 19
Coefficient of Thermal Expansion (in./in./°F) 9.7 x10⁶
Thermal Conductivity (btu/°F) 56
Elongation at Break, % 10
Melting Temperature °F 1600-1800
Tensile Strength ksi 165-200
Yield Strength 0.2% offset ksi 140-175
Elongation 27
Hardness (HB) 70-120


BeCu alloy C17200 combines high strength with non-magnetic and non-sparking properties. It’s typically used in the electronics, automotive, telecommunications, aerospace and oil and gas applications such as:

  • Electronic connector contacts
  • Telecommunications products
  • Small springs
  • Computer components