Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of C33300 Phosphor Bronze | High-Strength Copper Alloy Sheets, Plates, Rods & Tubes 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.
C33300 Phosphor Bronze, also known as Bearing Bronze or Copper-Tin-Phosphorus Alloy, is a high-performance copper alloy widely used in industrial and electrical applications. Compliant with ASTM B111 and UNS C33300 standards, it offers excellent wear resistance, corrosion resistance, and superior mechanical properties. Available in sheet, plate, strip, rod, and wire, C33300 Phosphor Bronze is ideal for bearings, bushings, springs, gears, and electronic components, making it a cost-effective and reliable choice for manufacturers worldwide.
Keywords: C33300 Phosphor Bronze, Bearing Bronze, Copper Alloy, ASTM B111, UNS C33300, Wear-Resistant Bronze, Bronze Rod, Bronze Sheet, Industrial Bronze Applications
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Products Description
Product Name: C33300 Phosphor Bronze
Other Names: Bearing Bronze, Phosphor Copper Alloy
Standards: ASTM B111, UNS C33300
Forms Available: Sheet, Plate, Strip, Rod, Wire
Surface Finish: Mill Finish, Polished, Annealed
Application Industries: Automotive, Electronics, Electrical, Marine, Industrial Machinery
Specifications (Metric & Imperial)
| Form | Thickness / Diameter | Width | Length | Unit |
|---|---|---|---|---|
| Sheet / Plate | 0.2–10 mm | 500–1500 mm | ≤3000 mm | mm |
| Rod / Wire | 1–100 mm | N/A | Custom | mm |
| Strip | 0.3–5 mm | 5–300 mm | ≤2000 mm | mm |
| Sheet / Plate | 0.008–0.4 in | 20–60 in | ≤120 in | in |
| Rod / Wire | 0.04–4 in | N/A | Custom | in |
Chemical Composition
| Element | Cu | Sn | P | Others |
|---|---|---|---|---|
| % | 94 | 6 | 0.03–0.35 | ≤0.5 |
Physical & Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 380–450 MPa |
| Yield Strength | 220–300 MPa |
| Elongation | 12–30% |
| Hardness (HB) | 90–120 |
| Density | 8.8 g/cm³ |
| Electrical Conductivity | 15–20% IACS |
| Melting Point | 890–950°C |
Features & Benefits
Excellent wear and fatigue resistance, ideal for bearings and bushings
Superior corrosion resistance in air, water, and mild chemicals
Good machinability and formability, suitable for complex components
Consistent mechanical strength under heavy loads
High thermal and electrical conductivity for electronic applications
Products Applications
Automotive: Bearings, bushings, springs, connectors
Electrical & Electronics: Contacts, terminals, relays
Industrial Machinery: Gears, washers, fasteners
Marine Equipment: Propeller shafts, pump components
Aerospace & High-Precision Instruments
C33300 vs Other Phosphor Bronzes Comparison Table
| Alloy | Tin Content (%) | Phosphorus Content (%) | Tensile Strength (MPa / ksi) | Hardness (HB) | Electrical Conductivity (% IACS) | Wear Resistance | Corrosion Resistance | Typical Applications |
|---|---|---|---|---|---|---|---|---|
| C33300 | 1–2 | 0.03–0.35 | 550–700 / 80–102 | 120–180 | 15–20 | Excellent | Excellent | Bearings, springs, connectors, industrial machinery |
| C51000 | 1 | 0.01–0.35 | 400–550 / 58–80 | 90–140 | 15–30 | Good | Good | Electrical connectors, decorative parts, terminals |
| C54400 | 2–2.5 | 0.03–0.35 | 450–600 / 65–87 | 100–150 | 10–15 | Good | Excellent | Bearings, springs, wear-resistant components |
| C52100 | 0.5–1 | 0.03–0.35 | 350–500 / 51–72 | 80–130 | 20–25 | Moderate | Good | Electrical contacts, terminals, low-wear components |
| C50700 | 5 | 0.02–0.3 | 500–650 / 72–94 | 110–170 | 7–12 | Excellent | Excellent | Heavy-duty bearings, marine hardware, industrial components |
C33300: Best combination of high strength, wear resistance, and corrosion resistance. Ideal for heavy-duty mechanical and electrical applications.
C51000: Best electrical conductivity, but lower wear resistance. Suitable for terminals and connectors.
C54400: Balanced strength and corrosion resistance, good for wear-prone parts.
C52100: Lower strength, higher conductivity - suitable for light-duty electrical components.
C50700: High tin content, excellent wear and corrosion resistance, ideal for marine and heavy machinery.
Inspection & Quality Assurance
ISO9001 Certified Production
Third-Party Testing: SGS, TUV available upon request
Inspection Items: Chemical composition, mechanical properties, dimensional tolerance, surface finish
Quality Guarantee: Each batch is traceable with full mill certificates
Delivery & Packaging
Standard Packaging: Wooden crates, pallets, or cartons with protective film
Export Packaging: Suitable for sea and air freight
Minimum Order Quantity: Negotiable
Custom Cutting & Processing: Available according to customer specifications
Get your C33300 Phosphor Bronze now! Our sales and technical team are ready to provide custom solutions, certifications, and fast delivery.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: What makes C33300 Phosphor Bronze ideal for bearing applications?
A1: C33300 has a high tin (Sn) and phosphorus (P) content, which provides excellent wear resistance, fatigue strength, and low friction properties. Its consistent mechanical performance under load makes it ideal for bearings, bushings, and springs in automotive and industrial machinery.
Q2: Can C33300 be welded or soldered?
A2: Yes, C33300 can be soldered, brazed, and welded with proper techniques. However, high heat welding may reduce mechanical properties, so post-weld annealing is recommended for critical applications.
Q3: How does C33300 compare to C51000 or C54400 phosphor bronze?
| Alloy | Tin (Sn) | Phosphorus (P) | Wear Resistance | Machinability | Typical Applications |
|---|---|---|---|---|---|
| C33300 | 5.5–6.5% | 0.03–0.35% | Excellent | Good | Bearings, bushings, springs |
| C51000 | 5.0–6.0% | 0.01–0.35% | Very Good | Better | Electrical contacts, connectors |
| C54400 | 7.0–9.0% | 0.01–0.35% | Superior | Moderate | Heavy-duty bearings, high-load bushings |
Q4: What are the machining and forming considerations for C33300?
A4:
Machining: Use sharp tools and moderate cutting speed to reduce tool wear.
Forming: Can be cold-worked or hot-worked; annealing improves ductility before complex shaping.
Surface Finish: Polishing improves corrosion resistance and reduces friction for bearing applications.
Q5: Is C33300 suitable for electrical or electronic components?
A5: Yes, with moderate electrical conductivity (~15–20% IACS), C33300 is suitable for terminals, connectors, and spring contacts where mechanical durability is more critical than maximum conductivity.
Q6: Can C33300 withstand harsh environmental conditions?
A6: C33300 has excellent corrosion resistance in air, water, and mildly corrosive chemicals. For marine or chemical environments, additional protective coatings or regular maintenance may be recommended.
Q7: What is the recommended temperature range for continuous operation?
A7: C33300 performs well up to 300°C. Above this temperature, mechanical strength may decrease, so consider alternative alloys for high-temperature applications.
Q8: How to select the right C33300 form for my application?
Sheets / Plates: Ideal for machining into bushings, washers, or flat components.
Rods / Bars: Suitable for turned parts, shafts, and pins.
Strips / Wire: Best for springs, connectors, and electronic components.
Custom sizes can be fabricated upon request for precise fit and performance.
Q9: What certifications and inspections are provided for C33300?
A9:
ISO9001 Certified Production
Mill Test Certificates (MTC) for chemical and mechanical properties
Third-Party Testing (SGS, TUV) available on request
Dimensional and surface inspections ensure consistent quality for industrial applications
Q10: How should C33300 be stored to maintain quality?
A10: Store in a dry, clean environment. Avoid contact with corrosive chemicals. Protective coatings or packaging film helps prevent oxidation during storage or transit.
Q11: Can you provide guidance on cost-efficiency compared to other alloys?
A11: C33300 is more cost-effective than higher-tin phosphor bronzes (like C54400) for large-scale production where wear resistance and mechanical strength are sufficient. Its combination of performance, durability, and machinability reduces maintenance and production costs over time.
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