B135 - Seamless Brass Tube
B135 - Seamless Brass Tube is a high-quality brass tube known for its excellent machinability, corrosion resistance, and good strength. Made primarily from a copper-zinc alloy, it is commonly used in various applications requiring durability and aesthetic appeal.
Chemical Composition
Element |
Composition (%) |
Copper (Cu) |
60 - 90 |
Zinc (Zn) |
Balance (varies) |
Lead (Pb) |
Varies by alloy |
Tin (Sn) |
Varies by alloy |
Other elements |
Varies by alloy |
Physical Properties
Property |
Value |
Melting Point - Liquidus |
1880°F (1027°C) |
Melting Point - Solidus |
1810°F (988°C) |
Density at 68°F (20°C) |
0.316 lb/cu in (8.75 g/cm³) |
Specific Gravity |
8.75 |
Electrical Conductivity at 68°F (20°C) |
37% IACS |
Thermal Conductivity at 68°F (20°C) |
92 Btu/sq ft/ft hr/°F (159 W/m·K) |
Coefficient of Thermal Expansion (68-572°F) |
10.4 × 10⁻⁶ per °F (18.7 × 10⁻⁶ per °C) |
Specific Heat Capacity at 68°F (20°C) |
0.09 Btu/lb/°F (0.377 J/g·°C) |
Modulus of Elasticity in Tension |
17,000 ksi (117 GPa) |
Modulus of Rigidity |
6,400 ksi (44 GPa) |
Mechanical Properties
Property |
Value |
Tensile Strength |
372 MPa (54,000 psi) minimum |
Hardness |
55-90 HRB |
Thermal Properties
Property |
Value |
Thermal Conductivity |
92 Btu/sq ft/ft hr/°F @ 68°F |
Specific Heat Capacity |
0.09 Btu/lb/°F @ 68°F |
Coefficient of Thermal Expansion (20-300°C) |
10.4 × 10⁻⁶ per °F (68-572°F) |
Melting Point - Liquidus |
1880°F |
Melting Point - Solidus |
1810°F |
Fabrication Properties
Property |
Characteristic |
Hot-working |
Suitable |
Cold-working |
Suitable |
Annealing |
Suitable |
Cold drawing |
Suitable |
Bending |
Good |
Flaring |
Good |
Expanding |
Good |
Soldering |
Excellent |
Brazing |
Excellent |
Threading |
Not recommended (use fittings instead) |
Common Applications
Common applications for B135 - Seamless Brass Tube include:
- Plumbing: Used for water supply lines and fixtures due to its corrosion resistance.
- Automotive Components: Employed in manufacturing various parts, such as fittings and connectors, that require good strength and durability.
- Furniture and Fixtures: Utilized in decorative elements and hardware for its aesthetic appeal and ease of machining.
- Instrumentation: Suitable for precision instruments and gauges that need reliable performance.
- Heat Exchangers: Used in applications where thermal conductivity and corrosion resistance are essential.
- Industrial Applications: Employed in various industrial piping systems for transporting fluids and gases.
- Electrical Applications: Used for electrical connectors and terminals due to its conductivity.
- Marine Hardware: Suitable for components exposed to seawater in marine environments due to its corrosion resistance.
- Handrails and Architectural Elements: Commonly used in the construction of handrails and other architectural features for both functionality and visual appeal.
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