Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of C34500 Leaded Brass Rod, Bar & Wire Supplier | UNS C34500 / CuZn35Pb2 in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
C34500 leaded brass is a high-performance copper-zinc-lead alloy designed for applications requiring excellent machinability, stable mechanical performance and good cold forming capability. Compared with ordinary brass materials, UNS C34500 brass alloy offers improved chip breaking, faster cutting efficiency and better surface finish during high-speed CNC machining operations.
Xi'an Dongmeng Group Co., Ltd is a professional supplier and manufacturer of C34500 brass rods, brass bars, brass wires and customized brass profiles for global industrial customers. Our products are widely used in CNC machining factories, valve manufacturing, electrical components, precision connectors, hydraulic fittings and industrial hardware industries.
As a reliable brass alloy supplier, we provide custom dimensions, OEM machining services, export packaging solutions and full material traceability to meet international industrial standards.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Why C34500 Leaded Brass Is Popular in CNC Machining
One of the main advantages of C34500 brass alloy is its excellent machining performance. The lead content inside the alloy helps improve chip control, cutting speed and tool life during precision processing.
Benefits of C34500 brass in machining applications:
Excellent chip breaking performance
Reduced tool wear
High-speed CNC machining compatibility
Smooth surface finish
Stable dimensional tolerance
Excellent threading performance
Suitable for automatic lathe processing
Ideal for drilling, tapping and turning
Because of these characteristics, C34500 leaded brass is widely used for high-volume production of precision industrial components.
Key Advantages of C34500 Brass
Excellent Machinability
C34500 has a machinability rating around 90, making it suitable for high-speed turning, drilling, threading and CNC machining.
Good Cold Forming Performance
ASTM B453 notes that C34500 and related copper-zinc-lead alloys are suitable for applications requiring machining before cold-forming processes such as swaging, flaring, severe knurling and thread rolling.
Stable Mechanical Properties
Typical mechanical values include tensile strength around 372 MPa / 54 ksi, yield strength around 234 MPa / 34 ksi, and Rockwell B hardness around 66, depending on temper and product form.
Tag-Style Introduction
Product Name: C34500 Leaded Brass
Alias: UNS C34500 / CuZn35Pb2 / Leaded Brass Alloy
Material Type: Copper-Zinc-Lead Alloy
Forms: Rod / Bar / Wire / Hex Bar / Square Bar / Flat Bar
Standards: ASTM B453 / SAE J461 / SAE J463
Features: Excellent Machinability / Good Cold Forming / Stable Performance
Applications: CNC Machining / Valve Components / Brass Fittings / Precision Parts
Processing Services: Cutting / CNC Machining / OEM Customization
Export Markets: Europe / North America / Southeast Asia / Middle East
Chemical Composition of C34500 Brass Alloy
| Element | Content |
|---|---|
| Copper, Cu | 62.0–65.0% |
| Lead, Pb | 1.5–2.5% |
| Iron, Fe | ≤0.15% |
| Zinc, Zn | Remainder |
C34500 is officially classified as a leaded brass alloy, not phosphor bronze. Its copper, lead and zinc range matches Copper Development Association and ASTM B453 data.
Mechanical Properties
| Property | Typical Value |
| Tensile Strength | 370 – 450 MPa |
| Yield Strength | 200 – 250 MPa |
| Elongation | 15 – 30% |
| Hardness | HRB 60 – 75 |
| Density | 8.47 g/cm³ |
| Electrical Conductivity | Approx. 26% IACS |
Mechanical properties may vary depending on temper, product form and processing condition.
Physical Properties
| Property | Value |
| Melting Point | 900 – 940°C |
| Thermal Conductivity | Approx. 120 W/m·K |
| Electrical Resistivity | Approx. 0.065 µΩ·m |
| Modulus of Elasticity | Approx. 105 GPa |
| Thermal Expansion | 20.5 µm/m·K |
Corrosion Resistance
C34500 leaded brass offers good corrosion resistance in normal industrial and atmospheric environments. The alloy performs well in applications involving moisture, mild chemicals and general industrial service conditions.
Typical corrosion-resistant applications include:
Plumbing fittings
Industrial connectors
Pneumatic systems
Hydraulic fittings
Brass valve components
Mechanical fasteners
For highly corrosive marine or acidic environments, other copper alloys may be recommended depending on service conditions.
Cold Forming & Thread Rolling Performance
Unlike some free-machining brass alloys that are optimized only for machining, C34500 brass also provides good cold forming capability.
Suitable forming operations include:
Thread rolling
Swaging
Knurling
Flaring
Light bending
Secondary forming
This makes C34500 an excellent material for manufacturers requiring both machining and post-processing operations.
Welding & Brazing Characteristics
C34500 brass can be brazed and soldered for selected industrial applications. However, due to the lead content, welding operations should be carefully controlled.
Recommended processing methods:
Brazing
Soft soldering
Mechanical assembly
Precision machining connection
For structural welding applications, alternative copper alloys may be more suitable.
Available Forms & Specifications
| Form | Standard Dimensions | Notes |
|---|---|---|
| Sheet / Plate | 0.2–10 mm thickness | Custom cut-to-size available |
| Rod / Bar | 3–120 mm diameter | Hot-rolled & cold-drawn options |
| Tube | 6–60 mm OD | Seamless & welded options |
| Wire | 0.5–10 mm diameter | High surface finish |
Tolerances: ASTM B103 / ASTM B505 standards
Surface Finish: Mill finish, polished, or custom machined
Manufacturing Capabilities
Xi'an Dongmeng Group Co., Ltd provides complete brass alloy processing services:
Brass rod manufacturing
Brass bar cutting
CNC machining
Precision sawing
Surface polishing
OEM customized processing
Export packaging
Bulk container shipment
We support both small trial orders and large industrial procurement projects.
Products Applications
CNC Machining Industry
Applications:
CNC turned parts
Precision machined components
Automatic lathe products
Brass threaded parts
Benefits:
High machining speed
Stable dimensional accuracy
Excellent chip control
Electrical & Hardware Industry
Applications:
Electrical connectors
Brass terminals
Precision hardware
Fasteners
Benefits:
Good conductivity
Excellent machinability
Reliable mechanical properties
Valve & Fluid Control Industry
Applications:
Valve stems
Brass connectors
Hydraulic fittings
Pneumatic fittings
Benefits:
Leak resistance
Stable brass composition
Precision machining performance
Industrial Equipment Manufacturing
Applications:
Industrial bushings
Precision sleeves
Mechanical accessories
Equipment fittings
Benefits:
Long service life
Easy machining
Stable processing quality
Product Standards
Our C34500 brass products can be supplied according to:
ASTM B453
SAE J461
SAE J463
UNS C34500
Customer technical drawings
OEM specifications
Phosphor Bronze Alloy Comparison: C34000 vs C34200 vs C34500
| Feature | C34000 | C34200 | C34500 |
|---|---|---|---|
| Type | Copper-Tin Alloy | Copper-Tin-Lead Alloy | Copper-Tin-Lead Alloy (higher Pb) |
| Lead Content | ≤0.05% | 0.05–0.35% | 0.5–1.5% |
| Tin Content | 9–10% | 8–9% | 8–10% |
| Phosphorus Content | 0.03–0.35% | 0.03–0.35% | 0.03–0.35% |
| Tensile Strength | 550–650 MPa | 500–600 MPa | 480–580 MPa |
| Yield Strength | 350–450 MPa | 300–400 MPa | 280–400 MPa |
| Elongation | 8–15% | 8–12% | 8–12% |
| Hardness | 120–150 HB | 120–150 HB | 120–150 HB |
| Electrical Conductivity | 15–18 % IACS | 13–16 % IACS | 12–16 % IACS |
| Machinability | Moderate | Good | Excellent |
| Corrosion Resistance | High | High | High |
| Applications | Bearings, Springs, Electrical Connectors | Bearings, Gears, Electrical Components, Springs | Precision Bearings, Gears, Springs, Electrical Components, High-Speed Machined Parts |
| Standards | ASTM B103/B505, UNS C34000 | ASTM B103/B505, UNS C34200 | ASTM B103/B505, UNS C34500 |
Inspection & Quality Assurance
To ensure stable product quality and export reliability, all materials undergo strict quality inspection before shipment.
Inspection procedures include:
Chemical composition analysis
Spectrometer testing
Hardness testing
Tensile strength testing
Surface inspection
Dimensional inspection
Straightness inspection
Packaging inspection
Third-party inspection services such as SGS, BV and TUV are also supported.
Packaging & Shipping
We provide professional export packaging solutions for international transportation.
Packaging methods:
Wooden case packaging
Waterproof packaging
PVC protective wrapping
Steel strip bundling
Export fumigation support
Customized labels & marks
Shipping methods:
Sea freight
Air freight
Railway transportation
Express delivery
Product Delivery Standards
Packing: Anti-oxidation paper, pallets, or wooden crates for export
Marking: ASTM / UNS grade, size, batch number, heat number
Lead Time: 2–4 weeks depending on order quantity
Customization: Cutting, machining, polishing available
Why Choose Xi'an Dongmeng Group Co., Ltd
Professional Copper Alloy Supplier
We specialize in brass, bronze, copper and industrial metal materials for global industrial customers.
OEM Customization Support
Custom sizes, precision cutting and machining services are available according to customer drawings.
Stable Product Quality
Strict quality inspection ensures reliable material performance and dimensional consistency.
Rich Export Experience
We provide international export packaging and support customers in Europe, America, Southeast Asia and the Middle East.
Fast Delivery
Large inventory and flexible production scheduling help shorten delivery times.
Technical Support
Our engineering team can assist with alloy selection and machining recommendations.
For C34500 Phosphor Bronze inquiries, pricing, or custom orders:
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: How does C34500 differ from C34200 in machinability?
A1: C34500 has a higher lead content (0.5–1.5%), which significantly improves chip formation, tool life, and machining precision, while maintaining high strength and corrosion resistance.
Q2: Can C34500 be used in high-load or high-speed bearing applications?
A2: Yes, its combination of wear resistance, fatigue strength, and machinability makes it suitable for bearings, bushings, and gears in both moderate and high-load conditions.
Q3: How does C34500 perform in corrosive environments?
A3: It maintains good corrosion resistance in industrial atmospheres, marine, and mild acidic conditions, though extreme environments may require protective coatings.
Q4: What standards ensure the quality of C34500?
A4: ASTM B103 (sheet/plate), ASTM B505 (rod/bar), UNS C34500, ISO 4332. Certificates such as ISO 9001, SGS, and TUV ensure traceability, chemical composition, and mechanical property verification.
Q5: Is C34500 suitable for soldering or brazing?
A5: Yes, brazing and soldering are recommended. Fusion welding requires careful heat control to avoid reducing mechanical properties.
Q6: Which forms are recommended for precision machined components?
A6: Cold-drawn rods and wires provide superior surface finish, tensile strength, and fatigue resistance, ideal for springs, precision gears, and electrical connectors.
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