About Alloy
C64700, commonly known as silicon brass, is a copper-zinc alloy renowned for its excellent machinability, corrosion resistance, and thermal conductivity. Composed primarily of copper with significant additions of zinc and silicon, C64700 offers a unique combination of mechanical properties that make it suitable for various industrial applications. This alloy is valued for its ease of fabrication, good strength, and resistance to corrosion in both freshwater and mildly corrosive environments. Commonly used in plumbing fixtures, electrical connectors, and decorative applications, C64700 silicon brass is favored for its versatility, durability, and aesthetic appeal.
Product Form
BS B25
DIN 17666 WS 2.0855
DIN 17672 WS 2.0855
DIN 44759 cl A3.2
CuNi2Si or CuNi3Si
NFL 14-701
ISO 1187
EN 12163 - CW111C
EN 12165 - CW111C
EN 12167 - CW111C
EN 12420 - CW111C
UNS C64700
Chemical Composition
| Weight % | Cu | Ni | Si |
| NS5 | Bal | 2.5 | 0.65 |
Property
| Property | Value |
| Tensile Strength, MPa | 310 - 450 |
| Yield Strength, MPa | 125 - 240 |
| Elongation, % in 50 mm | 15 - 35 |
| Hardness, HB | 70 - 160 |
| Modulus of Elasticity, GPa | 97 |
| Density, g/cm3 | 8.53 |
| Electrical Conductivity (% IACS) | 26 - 42 |
| Thermal Conductivity, W/m·K | 65 - 70 |
Application
C64700 silicon brass is utilized across various industries for its good machinability, corrosion resistance, and electrical conductivity. Key applications include:
● Plumbing Fixtures: C64700 is commonly used in plumbing fittings, valves, and components where its corrosion resistance to freshwater and good machinability are advantageous.
● Electrical Connectors: The alloy is employed in electrical connectors and terminals due to its excellent electrical conductivity and resistance to corrosion, ensuring reliable electrical performance.
● Decorative Applications: C64700 is utilized in decorative hardware, architectural accents, and artistic applications where its aesthetic appeal and corrosion resistance are valued.
● Automotive: The alloy finds application in automotive components such as radiator cores, radiator tanks, and other parts requiring good corrosion resistance and thermal conductivity.
● Marine Hardware: C64700 is used in marine applications for fittings and components that require resistance to corrosion in saltwater environments.
● Industrial Equipment: It is suitable for various industrial equipment components including pump parts, gears, and bushings where its combination of strength, machinability, and corrosion resistance are beneficial.
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