C90300 High Tin Bronze Product Introduction:
• Composition: 86-89% copper, 7.5-9% tin, other elements
• Key features:
- High strength and excellent wear resistance
- Ketahanan korosi yang baik
- Suitable for heavy load and low-speed applications
• Main applications: - Bearings and gears
- Marine propeller hubs
- Valve components
• Processing characteristics: - Excellent casting properties
- Kemampuan mesin yang baik
• Complies with international standards like ASTM B505, B271
• Wide temperature range applicability, from low to moderate temperatures
• Available in various forms: bars, plates, tubes, castings
C90300 Tin Bronze Product Introduction
C90300 is a high-tin bronze alloy known for its excellent wear resistance, high strength, and good corrosion resistance. This versatile material is widely used in various industrial applications, particularly where high load-bearing capacity and low-speed operations are required.
Komposisi kimia
The chemical composition of C90300 is crucial to its performance characteristics:
| Elemen | Percentage Range | Fungsi |
|---|---|---|
| Copper (Cu) | 86.0 – 89.0% | Base metal, provides ductility and conductivity |
| Tin (Sn) | 7.5 – 9.0% | Increases strength and wear resistance |
| Lead (Pb) | 0.30 – 1.5% | Improves machinability |
| Zinc (Zn) | 1.0 – 3.0% | Enhances fluidity in casting, deoxidizer |
| Nickel (Ni) | 1.0% max | Improves corrosion resistance |
| Iron (Fe) | 0.20% max | Grain refiner, increases strength |
| Phosphorus (P) | 0.05 – 0.35% | Deoxidizer, improves fluidity |
| Antimony (Sb) | 0.20% max | Enhances strength and hardness |
| Sulfur (S) | 0.05% max | Impurity, controlled to minimize negative effects |
| Aluminum (Al) | 0.005% max | Deoxidizer |
| Silicon (Si) | 0.005% max | Improves wear resistance |
Peralatan mekanis
The mechanical properties of C90300 contribute to its suitability for various industrial applications:
| Property | Nilai |
|---|---|
| Tensile Strength (min) | 40 ksi (276 MPa) |
| Yield Strength (min) | 20 ksi (138 MPa) |
| Elongation (min) | 20% |
| Kekerasan Brinell | 70 HB (typical) |
| Kepadatan | 0.319 lb/in³ (8.83 g/cm³) |
| Modulus Elastisitas | 15.5 x 10^6 psi (107 GPa) |
Performance at Different Temperatures
C90300 maintains its properties across a range of temperatures:
| Temperature Range | Performance Characteristics |
|---|---|
| Low Temperature (-50°C to 0°C) | Maintains ductility and strength |
| Room Temperature (0°C to 30°C) | Optimal performance for most applications |
| Elevated Temperature (30°C to 200°C) | Gradual decrease in strength, still suitable for many applications |
| High Temperature (200°C to 300°C) | Significant decrease in strength, limited applications |
Industry Applications
C90300 finds use in various industries due to its unique properties:
| Industry | Aplikasi |
|---|---|
| Marine | Propeller hubs, bushings, valve components |
| Otomotif | Thrust washers, bushings, wear plates |
| Mesin Industri | Gears, bearings, wear strips |
| Oil and Gas | Pump components, valve seats |
| Konstruksi | Bridge bearings, heavy equipment components |
| luar angkasa | Landing gear components, bushings |
Shape and Size Availability
C90300 is available in various forms to suit different manufacturing needs:
| Membentuk | Size Range | adalah Baja Struktural Kekuatan Tinggi Paduan Rendah Standar GB Cina |
|---|---|---|
| Round Bars | 10mm – 300mm diameter | Standard lengths up to 3.6m |
| Hollow Bars | 20mm – 250mm OD, 10mm – 200mm ID | Custom lengths available |
| piring | 5mm – 100mm thickness | Width up to 1.2m, length up to 3m |
| tabung | 15mm – 200mm OD, 1.5mm – 25mm wall thickness | Standard lengths up to 3m |
| Castings | Custom sizes | Sand, centrifugal, and continuous casting available |
| tempa | Up to 1000kg | Custom shapes possible |
Production Standards
C90300 complies with several important standards:
| Standar | Keterangan |
|---|---|
| ASTM B505 | Standard Specification for Copper Alloy Continuous Castings |
| ASTM B271 | Standard Specification for Copper-Base Alloy Centrifugal Castings |
| ASTM B584 | Standard Specification for Copper Alloy Sand Castings for General Applications |
| SAE J461 | Copper-Base Alloy Castings |
| MIL-C-22229 | Military Specification: Castings, Bronze |
International Standards and Corresponding Grades
C90300 has equivalent or similar grades in different countries:
| Country/Region | Standar | Equivalent/Similar Grade |
|---|---|---|
| Amerika Serikat | ASTM/UNS | C90300 |
| Eropa | PADA | CuSn8 |
| Jepang | JIS | CAC903 |
| Cina | GB | ZCuSn8Pb1 |
| Inggris | BS | PB3 |
| Jerman | DARI | G-CuSn8 |
Welding Characteristics
Welding C90300 requires specific techniques:
| Welding Method | Kesesuaian | adalah Baja Struktural Kekuatan Tinggi Paduan Rendah Standar GB Cina |
|---|---|---|
| Gas Tungsten Arc Welding (GTAW) | Bagus sekali | Preferred for thin sections and precision work |
| Gas Metal Arc Welding (GMAW) | Bagus | Suitable for thicker sections |
| Shielded Metal Arc Welding (SMAW) | Adil | Requires proper electrode selection |
| Pengelasan Oxyacetylene | Miskin | Not recommended due to high heat input |
| Resistance Welding | Adil | Limited applications |
Processing Characteristics
C90300 can be processed using various methods:
| Proses | Kesesuaian | adalah Baja Struktural Kekuatan Tinggi Paduan Rendah Standar GB Cina |
|---|---|---|
| permesinan | Bagus sekali | Good machinability, produces smooth finishes |
| Membentuk | Adil | Limited cold formability due to high tin content |
| Casting | Bagus sekali | Widely used in casting applications |
| Penempaan | Adil | Hot forging possible, limited cold forging |
| Perawatan panas | Bagus | Can be strengthened through heat treatment |
pemolesan
Polishing C90300 can enhance its appearance and surface properties:
| Polishing Method | Effectiveness | adalah Baja Struktural Kekuatan Tinggi Paduan Rendah Standar GB Cina |
|---|---|---|
| Mechanical Polishing | Bagus sekali | Achieves high luster |
| Chemical Polishing | Bagus | Suitable for complex shapes |
| Electro-polishing | Very Good | Provides smooth, bright finish |
| Buffing | Bagus sekali | For final finish and high shine |
Perawatan panas
Heat treatment can modify the properties of C90300:
| Perawatan panas | Purpose | Proses |
|---|---|---|
| anil | Stress relief, softening | Heat to 550-650°C, slow cool |
| Perawatan Solusi | Homogenization | Heat to 760-780°C, water quench |
| Age Hardening | Increase strength and hardness | Heat to 350-400°C for 2-4 hours, air cool |
Cold Processing
Cold working can alter the mechanical properties of C90300:
| Cold Working Method | Effect on Properties |
|---|---|
| Cold Rolling | Increases strength, reduces ductility |
| Cold Drawing | Improves surface finish, dimensional accuracy |
| Penempaan Dingin | Limited applicability, may require intermediate annealing |
| Shot Peening | Improves fatigue resistance |
Advantages and Disadvantages
C90300 tin bronze has several pros and cons:
| Keuntungan | Metode pemotongan |
|---|---|
| Kekuatan tinggi | Higher cost compared to lower tin bronzes |
| Ketahanan aus yang sangat baik | Limited formability |
| Ketahanan korosi yang baik | Lower electrical conductivity than pure copper |
| Low friction coefficient | Potential for dezincification in certain environments |
| Kemampuan mesin yang baik | Not suitable for high-speed applications |
| Suitable for heavy loads | May require special welding procedures |
Similar Products and Comparison
C90300 is part of a family of tin bronzes. Here’s a comparison with similar alloys:
| paduan | Cu % | Sn % | Other Elements | Key Differences |
|---|---|---|---|---|
| C90300 | 86-89 | 7.5-9 | Zn, Pb, Ni | Base alloy for comparison |
| C90500 | 86-89 | 9-11 | Ni, Zn | Higher tin, increased hardness |
| C90700 | 88-90 | 10-12 | Ni | Even higher tin, maximum hardness |
| C83600 | 84-86 | 4-6 | Zn, Pb | Lower tin, increased ductility |
| C92200 | 86-90 | 5.5-6.5 | Zn, Pb | Lower tin, better for pressure-tight applications |
Conclusion
C90300 tin bronze is a versatile alloy offering a balanced combination of strength, wear resistance, and corrosion resistance. It excels in applications involving heavy loads and low speeds, such as bearings, gears, and marine components. While it has limitations like higher cost and limited formability, its good machinability and casting properties enhance its manufacturing versatility. When selecting C90300, engineers should consider specific application requirements, operating conditions, and economic factors. Its compliance with international standards and proven performance in various industries make it a reliable choice for many demanding applications in modern engineering and manufacturing.
