UNS C19020 is a high-strength alloy that is commonly used in the manufacturing industry. This copper-zinc alloy is known for its excellent mechanical and physical properties, making it an ideal material for various applications. This article will provide an overview of UNS C19020’s composition, physical and mechanical properties, uses, hardness, heat treatment, welding, and corrosion-resistant properties.
UNS C19020 Composition
UNS C19020 is a copper alloy with high amounts of copper, zinc, and iron. The alloy has a nominal composition of 65% copper, 30% zinc, and 5% iron. It also contains trace amounts of lead and phosphorus. This composition gives the alloy high strength, good corrosion resistance, and excellent machinability.
|Copper, Cu + Silver, Ag
UNS C19020 Physical Properties
UNS C19020 has excellent physical properties, which make it an ideal material for various applications. It has a density of approximately 8.5 g/cm³ and a melting point of 1025°C. The thermal expansion coefficient of this alloy is quite low, at approximately 18 x 10^-6/K. It has an electrical conductivity of 25-30% IACS and a thermal conductivity of 64-67 W/m K. These properties make UNS C19020 ideal for use in electrical components, heat exchangers, and piping systems.
UNS C19020 Mechanical Properties
UNS C19020 has excellent mechanical properties, which make it ideal for high-stress applications. It has a tensile strength of 620 MPa and a yield strength of 390 MPa. Its elongation at break is approximately 18%, and its modulus of elasticity is 104 GPa. These properties make UNS C19020 ideal for high-stress applications such as valves, fittings, pumps, and marine hardware.
UNS C19020 Uses
UNS C19020 is widely used in various applications due to its excellent mechanical and physical properties. It is commonly used in marine hardware, heat exchangers, piping systems, hydraulic fittings, and electrical components such as switchgear contacts. Its high strength, good corrosion resistance, and excellent machinability make it ideal for critical applications.
UNS C19020 Hardness
UNS C19020 has a hardness of approximately 140 HB, which is quite high compared to other copper alloys. It can be hardened through cold working, which increases strength and hardness. However, excessive cold work can lead to reduced ductility and toughness.
UNS C19020 Heat treatment
UNS C19020 is a precipitation-hardening alloy which can be heat-treated to increase its mechanical properties. It can be aged between 315°C and 510°C to increase strength. However, excessive ageing can lead to reduced ductility and toughness.
UNS C19020 Welding
UNS C19020 can be welded using TIG, MIG, and resistance welding. However, selecting the appropriate filler material is important to ensure that the weld has good strength and corrosion resistance. Welding can reduce mechanical properties, so selecting the appropriate heat treatment to restore the properties is important.
UNS C19020 Corrosion Resistant
UNS C19020 has good corrosion resistance in various environments, including seawater, freshwater, and industrial atmospheres. It has excellent resistance to stress corrosion cracking and dezincification, making it an ideal material for marine hardware and piping systems.
UNS C19020 is a high-strength alloy widely used in various applications due to its excellent mechanical and physical properties. Its high strength, good corrosion resistance, and excellent machinability make it ideal for critical applications such as marine hardware, heat exchangers, and piping systems. Understanding the properties and uses of UNS C19020 can help you select the appropriate material for your specific application, ensuring that your product has the required mechanical and physical properties.
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