C34200, also known as Phosphor Bronze with lead, is a high-performance copper alloy engineered for enhanced wear resistance, machinability, and corrosion resistance. Compared to C34000, C34200 contains a small amount of lead, which improves machinability while maintaining excellent strength and fatigue resistance.
It is widely used in bearings, gears, washers, springs, and electrical components. Available in sheets, rods, tubes, and wires, C34200 is a versatile alloy for precision mechanical and industrial applications.
Aliases: C342 Phosphor Bronze, ASTM B103, UNS C34200, commonly recognized in international markets.
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Products Description
C34200 | Phosphor Bronze
Type: Copper-Tin-Lead Alloy
Properties: High Strength • Machinable • Wear Resistant • Corrosion Resistant
Forms: Sheet • Rod • Tube • Wire
Applications: Bearings • Springs • Washers • Electrical Components
Standards: ASTM B103 • ASTM B505 • UNS C34200
Chemical Composition (Typical %)
| Element | Cu | Sn | P | Pb | Zn | Fe | Others |
|---|---|---|---|---|---|---|---|
| Content | Balance | 8–9 | 0.03–0.35 | 0.05–0.35 | ≤0.05 | ≤0.20 | ≤0.05 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 500–600 MPa |
| Yield Strength | 300–400 MPa |
| Elongation | 8–12% |
| Hardness | 120–150 HB |
| Density | 8.8 g/cm³ |
| Electrical Conductivity | 13–16 % IACS |
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.
Key Features
High Strength & Durability
Excellent Machinability (due to lead content)
Wear & Fatigue Resistant
Corrosion Resistant
Good Electrical Conductivity
Products Applications
Bearings, bushings, and washers
Gears and mechanical springs
Electrical connectors and terminals
Marine hardware and fasteners
Industrial machinery components
Inspection & Quality Assurance
Chemical composition testing (spectrometer & wet chemistry)
Mechanical property verification (tensile, hardness, fatigue)
Surface inspection for defects and oxidation
Compliance with ISO 9001, SGS, TUV, and other international certifications
Product Delivery Standards
Packing: Anti-oxidation paper, pallets, or wooden crates
Marking: ASTM / UNS grade, size, batch number, heat number
Lead Time: 2–4 weeks (depending on quantity)
Customization: Cutting, machining, polishing available
For C34200 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 the lead content affect C34200's machinability?
A1: The small addition of lead (0.05–0.35%) acts as a natural lubricant, improving chip formation, tool life, and precision machining, without significantly affecting strength or corrosion resistance.
Q2: Can C34200 be used in high-load bearings?
A2: Yes, it offers high strength and wear resistance, making it suitable for bearings, bushings, and gear components under moderate to heavy loads.
Q3: How does C34200 compare to C34000 in corrosion resistance?
A3: Both alloys are corrosion-resistant; C34200's lead slightly reduces corrosion resistance in extreme environments, but it remains suitable for marine, industrial, and electrical applications.
Q4: What standards govern C34200 quality?
A4: ASTM B103 (sheet/plate), ASTM B505 (rod/bar), UNS C34200, ISO 4332, with traceability via ISO 9001, SGS, TUV certificates.
Q5: Is C34200 suitable for soldering or brazing?
A5: Yes, soldering and brazing are recommended; avoid excessive heat during welding to preserve mechanical properties.
Q6: What forms are recommended for precision spring components?
A6: Cold-drawn rods and wires provide superior tensile strength and fatigue resistance, ideal for springs and fine mechanical parts.
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