Leaded brass hollow rods are precision manufactured, copper-zinc alloy bars with a central hole that are manufactured for parts that require efficient machining and dimensional uniformity. They are cleaner and have a controlled lead content which helps reduce the need to break the chips, cutting friction, and tool wear, and allow for faster cutting speeds with cleaner surface finishes. The material can also be saved in hollow manufacturing, eliminating the center drilling needed for manufacturing tubular or annular parts. These rods can be manufactured to any required dimension and specification and are available as grades such as C34500, C36000, C37700, C35300, and IS 319. USA Piping Solutionis a manufacturer and supplier of leaded brass hollow rods for precision engineering, automotive, plumbing, hardware and general industrial purposes with reliable material traceability and quality control.
Chemical Compositions of Leaded Brass Hollow Rods
| Sub-Grade | UNS / Alloy | Copper (Cu) % | Lead (Pb) % | Iron (Fe) % | Zinc (Zn) % | Aluminum (Al) % | Other Elements |
|---|---|---|---|---|---|---|---|
| High Leaded Brass | C34500 | 62.0 – 65.0 | 1.5 – 2.5 | 0.15 Max | Remainder | — | Total Impurities: 0.50% Max |
| Forging Brass | C37700 | 58.0 – 61.0 | 1.5 – 2.5 | 0.30 Max | Remainder | — | Total Impurities: 0.50% Max |
| Threaded Rolling Brass | C35300 | 60.0 – 63.0 | 1.5 – 2.5 | 0.15 Max | Remainder | — | Total Impurities: 0.50% Max |
| Free Machining Brass | C36000 | 60.0 – 63.0 | 2.5 – 3.7 | 0.35 Max | Remainder | — | Total Impurities: 0.50% Max |
| Architectural Bronze | C38000 | 56.0 – 60.0 | 1.5 – 2.5 | 0.10 – 0.50 | Remainder | — | Sn/Ni Traces |
| Free Cutting Muntz | C37000 | 59.0 – 62.0 | 0.8 – 1.5 | 0.10 Max | Remainder | — | Total Impurities: 0.50% Max |
| IS 319 Brass | Gr. 1 / CuZn39Pb3 | 60.0 – 63.0 | 2.5 – 3.5 | 0.35 Max | Remainder | — | Total Impurities: 0.70% Max |
| Aluminium Bronze | C95200 | 86.0 Min | — | 2.5 – 4.0 | — | 8.5 – 10.5 | Total Impurities: 0.50% Max |
Types of Leaded Brass Hollow Rods
Architectural Brass Hollow Bar
CW713R Brass Hollow Bar
Forging Brass Hollow Rods
Free Cutting Muntz Brass Hollow Bar
Free Machining Brass Hollow Rods
High Leaded Brass Hollow Rods
IS 319 Brass Hollow Bar
Threaded Rolling Brass Hollow Rods
Applications and Industrial Uses of Leaded Brass Hollow Rods
- Valve Components
- Plumbing Fittings
- Bushings and Bearings
- Automotive Components
- Fasteners
- Hydraulic and Pneumatic Components
- Electrical and Electronic Hardware
- Precision Engineering Components
Frequently Asked Questions
What is the main benefit of using hollow brass rods over solid brass bars?
Hollow brass rods eliminate center drilling, reducing material waste, machining time, tool wear, and production costs.
Why is lead added to brass alloys?
Lead improves machinability by acting as a chip breaker and lubricant, producing shorter chips and smoother machining.
What is the difference between High Leaded Brass (C34500) and Free Machining Brass (C36000)?
C36000 has higher lead content and offers maximum machinability, while C34500 has higher copper content and is better for forming and thread rolling.
Which leaded brass grade is best for hot forging?
C37700 Forging Brass is widely used for hot forging because of its excellent hot-working properties.
Can leaded brass hollow rods be used in potable water systems?
Standard leaded brass may not be suitable for potable water systems. Low-lead or lead-free brass should be used where regulations require it.
How does Aluminum Bronze (C95200) differ from Leaded Brass grades?
C95200 is a copper-aluminum alloy with higher strength and better seawater corrosion resistance than standard leaded brass grades.