Copper alloys are incredibly versatile materials that can be adjusted to suit a range of purposes. One of the most commonly used copper alloys today is C61800, renowned for its exceptional strength, durability, and wear resistance. This blog provides an in-depth guide to the C61800 copper alloy, including its composition, physical and mechanical properties, uses, hardness, and more.
C61800 Copper Alloy Composition
C61800 copper alloy is part of the aluminium bronze family and contains between 9% and 11% aluminium, making it an alloy with high strength, corrosion resistance, and wear resistance. It also contains small amounts of iron, manganese, and nickel in its composition. This combination of elements produces an alloy that is tough, durable, and corrosion-resistant.
C61800 Copper Alloy Physical Properties
C61800 copper alloy has excellent physical properties, making it a sought-after material for various industrial applications. This alloy has a 7.8 g/cm³ density and a melting point of 1,050°C. It also has a low thermal expansion coefficient, which makes it ideal for use in high-intensity applications.
C61800 Copper Alloy Mechanical Properties
C61800 copper alloy has a high yield strength of 600 MPa, which makes it exceptionally strong and wear-resistant. It also has a high hardness value of 200-250 HB, which means it can withstand high wear, friction, and abrasion levels. Additionally, this alloy has high fatigue strength, making it resistant to mechanical stresses and vibrations.
|Yield strength (depending on temper)
|Elongation at break (in 50 mm)
|Machinability (UNS C36000 (free-cutting brass) = 100)
C61800 Copper Alloy Equivalent
- ASME SFA5.7
- MIL E-23765/3
- MIL W-6712
C61800 Copper Alloy Uses
C61800 copper alloy is widely used in various industrial applications that require high strength and corrosion resistance. It is commonly used in marine applications, such as shipbuilding, as well as in heavy machinery, tooling, and aerospace. It also makes electrical connectors, springs, fasteners, and valves.
C61800 Copper Alloy Hardness
C61800 copper alloy has a high hardness value of 200-250 HB. This makes it ideal for use in applications that require abrasion resistance, such as gears, bearings, and bushings. Its hardness also makes it suitable for use in applications that require strength and durability, such as marine components.
C61800 Copper Alloy Heat Treatment
C61800 copper alloy can be heat-treated to improve its properties further. This process involves heating the material to a specific temperature and then quenching it in water or oil. This heat treatment process increases its strength, hardness, and wear resistance.
C61800 Copper Alloy Welding
C61800 copper alloy can be welded using various welding methods, such as TIG welding, MIG welding, and brazing. Welding can be challenging due to the alloy’s high aluminium content, which can cause cracking during welding. However, with proper preparation and techniques, C61800 copper alloy can be welded effectively.
C61800 Copper Alloy Corrosion Resistance
C61800 copper alloy is highly corrosion-resistant and is an excellent material choice for marine applications. It’s also resistant to various chemical environments, including seawater, acids, and alkalis. This corrosion resistance is due to the high aluminium content in its composition, which forms a protective oxide layer on the material’s surface.
C61800 copper alloy is a versatile and widely used material known for its high strength, durability, and wear resistance. Its composition, physical and mechanical properties, and heat treatment capabilities make it an excellent material choice for various industrial applications. Whether you’re building a ship or machinery or require electrical connectors, valves, and springs, the C61800 copper alloy is worth considering for its superior corrosion resistance, hardness value, and mechanical strength.
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