ThePipingMart Blog Grades C17600 Beryllium Copper – Composition, Properties, and Uses

C17600 Beryllium Copper – Composition, Properties, and Uses

C17600 Beryllium Copper

C17600 Beryllium Copper is a versatile material widely used in various industries as it offers excellent strength, conductivity, and thermal properties. The alloy has an impressive hardness and is highly corrosion-resistant, making it an ideal choice for electrical engineering, aerospace, marine engineering, and more applications. In this blog post, we will dive deeper into what c17600 beryllium copper is, its composition, physical and mechanical properties, uses hardness, heat treatment, welding, and corrosion resistance.

C17600 Composition

C17600 Beryllium Copper is a copper-based alloy of 1.9 to 2.3% Beryllium and 0.2 to 0.6% Cobalt. The alloy also contains trace amounts of Iron, Nickel, Lead, and Silicon to enhance its overall properties. Its unique composition leads to its exceptional strength and elasticity, which makes it an ideal material for creating precision components and parts in various industries.

Element Content (%)
Cu 98.1
Be 1.7
Co 0.20

C17600 Physical Properties

C17600 Beryllium Copper boasts excellent physical properties, making it an ideal material for products requiring high conductivity, temperature resistance, and durability. The alloy has a melting point of around 1020 Degrees Celsius with a density of 8.3g/cm3. Additionally, it has a thermal conductivity of 200 W/mK, a specific heat capacity of 0.38 J/gK, and a thermal expansion coefficient of 17.9 x 10-6/K.

Properties Metric Imperial
Density 8.26 g/cm3 0.298 lb/in3
Melting point 866°C 1590°F

C17600 Mechanical Properties

One of the most remarkable mechanical properties of C17600 Beryllium Copper is its impressive hardness, which ranges from 320 to 380 HB (Brinell Hardness). The alloy has an ultimate tensile strength of 1200 MPa and a yield strength of 1100 MPa. Therefore, it is a perfect material for creating products that require high strength and durability over time.

Properties Metric Imperial
Tensile strength, ultimate 483 – 810 MPa 70100 – 117000 psi
Tensile strength, yield (depending on temper) 221 – 1172 MPa 32100 – 170000 psi
Elongation at break (in 76.2 mm) 45.00% 45.00%
Modulus of elasticity 115 GPa 16700 ksi
Poissons ratio 0.3 0.3
Machinability (UNS C36000 (free-cutting brass) = 100%) 20% 20%
Shear modulus 50.0 GPa 7250 ksi

C17600 Thermal Properties

Properties Metric Imperial
CTE, linear (@20.0 – 100°C/68.0 – 212°F) 16.7 μm/m°C 9.28 μin/in°F
CTE, linear (@20.0 – 200°C/68.0 – 392°F) 17.3 μm/m°C 9.61 μin/in°F
CTE, linear (@20.0 – 300°C/68.0 – 572°F) 17.8 μm/m°C 9.89 μin/in°F
Thermal conductivity (@20.0°C/68.0°F) 118 W/m-K 819 BTU-in/hr-ft2°F
Solidus 865°C 1590°F
Liquidus 980°C 1800°F

C17600 Equivalents

  • UNS C17000
  • ASTM B194
  • ASTM B196
  • ASTM B570
  • SAE J461
  • SAE J463

C17600 Uses

C17600 Beryllium Copper is used in several industrial applications ranging from aerospace, electronics, marine engineering, and more. It is a popular material for manufacturing electrical connectors, fuse clips, relays, and switch parts. Its high thermal conductivity makes it an ideal heat sink material, and its excellent corrosion-resistant properties make it perfect for marine and oil rig applications.

C17600 Hardness

C17600 Beryllium Copper’s exceptional hardness makes it an ideal material for high strength and durability applications. The alloy can be hardened by heat treatment and precipitation hardening. When subjected to heat treatment, the alloy attains a hardness of 350 to 420 HV (Vickers Hardness).

C17600 Heat treatment

C17600 Beryllium Copper can be heat-treated to enhance its mechanical properties, such as strength, elasticity, and resistance to wear and tear. Heat treatment involves heating the alloy to a temperature of 450-550 degrees Celsius for 1-4 hours, then cooling it in air or water. This process results in higher strength and hardness of the alloy.

C17600 Beryllium Copper Welding

Welding C17600 Beryllium Copper requires proper pre-weld and post-weld processes to achieve a high-quality weld. Preheating the alloy before welding is recommended to reduce the risk of cracking or deformation. Additionally, post-weld heat treatment can help restore the strength and elasticity of the affected areas.

C17600 Beryllium Copper Corrosion Resistant

C17600 Beryllium Copper is highly resistant to corrosion and has impressive resistance to acidic and alkaline solutions. This makes it ideal for marine engineering and oil rigs where the environment is highly corrosive. Additionally, the alloy can resist atmospheric corrosion, making it suitable for outdoor applications.


C17600 Beryllium Copper is a versatile material with excellent mechanical and physical properties, making it an ideal choice for various industrial applications. Its unique properties, such as high strength, elasticity, thermal conductivity, and corrosion-resistant properties, make it a go-to material for electrical connectors, fuse clips, and more. Furthermore, the heat treatment process can be utilized to enhance its overall qualities. While welding and corrosion resistance can be challenging, proper pre-weld and post-weld methods can significantly improve the weld’s quality and widespread corrosion resistance.

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