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Formula: Cu 63/Zn 37
Form: Bar
Material: Brass
Commodity: Alloys
Side Length: 6.35mm
Side Length (Of Longer Side): 12.7mm
Brass Bar (Cu63/Zn37) combines excellent machinability with a balance of strength and corrosion resistance, owing to its precise copper-to-zinc ratio. This composition provides high plasticity and ease of fabrication, making it a favored choice for complex components that require precision forming and reliable mechanical performance. The alloy is widely utilized across industries such as telecommunications, marine engineering, architectural hardware, and precision manufacturing. Notable applications include electrical connectors, decorative yet durable fittings, and precision-machined components for instrumentation. Its capacity to maintain dimensional stability under load and resist environmental degradation ensures long service life in both structural and functional roles. In research and innovation, Cu63/Zn37 brass serves as a benchmark material for developing lead-free and high-performance alloys, supporting the advancement of environmentally responsible engineering solutions. Its adaptability and balanced property profile secure its place in both high-tech and traditional manufacturing sectors.
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Tolerances

Bar
Side Length =<10mm ±10%
Side Length >10mm ±1mm
Side Length (Of Longer Side) >10mm ±1mm
Side Length (Of Longer Side) =<10mm ±10%
Length <100mm ±1mm
Length >=100mm +5% / -1%

Material Properties for Alloys

Mechanical Properties
Element Value
Hardness - Brinell 65-136
Elongation at break( % ) 55
Modulus of elasticity( GPa ) 95-110
Shear strength( MPa ) 280-310
Tensile strength( MPa ) 330-500
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 6.2-6.6
Temperature coefficient( K⁻¹ ) 0.0016-0.0017
Thermal Properties
Element Value
Melting point( C ) 900-920
Thermal conductivity( W m⁻¹ K⁻¹ ) 125@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 19-20.5@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8.45

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