C90300 High Tin Bronze Product Introduction:
• Composition: 86-89% copper, 7.5-9% tin, other elements
• Key features:
- High strength and excellent wear resistance
- Good corrosion resistance
- Suitable for heavy load and low-speed applications
• Main applications: - Bearings and gears
- Marine propeller hubs
- Komponen injap
• Processing characteristics: - Excellent casting properties
- Good machinability
• 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:
| unsur | Julat Peratusan | Function |
|---|---|---|
| Tembaga | 86.0 – 89.0% | Base metal, provides ductility and conductivity |
| Timah (Sn) | 7.5 – 9.0% | Increases strength and wear resistance |
| Plumbum (Pb) | 0.30 – 1.5% | Improves machinability |
| Zink (Zn) | 1.0 – 3.0% | Enhances fluidity in casting, deoxidizer |
| Nikel (Ni) | 1.0% max | Improves corrosion resistance |
| Besi (Fe) | 0.20% max | Grain refiner, increases strength |
| Fosforus (P) | 0.05 – 0.35% | Deoxidizer, improves fluidity |
| Antimoni (Sb) | 0.20% max | Enhances strength and hardness |
| Sulfur (S) | 0.05% max | Impurity, controlled to minimize negative effects |
| Aluminium (Al) | 0.005% max | Deoxidizer |
| Silikon (Si) | 0.005% max | Improves wear resistance |
Sifat Mekanikal
The mechanical properties of C90300 contribute to its suitability for various industrial applications:
| Harta benda | Nilai |
|---|---|
| Kekuatan Tegangan (min) | 40 ksi (276 MPa) |
| Kekuatan Hasil (min) | 20 ksi (138 MPa) |
| Pemanjangan (min) | 20% |
| Kekerasan Brinell | 70 HB (typical) |
| Ketumpatan | 0.319 lb/in³ (8.83 g/cm³) |
| Modulus Keanjalan | 15.5 x 10^6 psi (107 GPa) |
Prestasi pada Suhu Berbeza
C90300 maintains its properties across a range of temperatures:
| Julat Suhu | Ciri-ciri Prestasi |
|---|---|
| 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 |
Aplikasi Industri
C90300 finds use in various industries due to its unique properties:
| industri | Aplikasi |
|---|---|
| Marin | Propeller hubs, bushings, valve components |
| Automotif | Thrust washers, bushings, wear plates |
| Industrial Machinery | Gears, bearings, wear strips |
| Minyak dan Gas | Pump components, valve seats |
| Pembinaan | Bridge bearings, heavy equipment components |
| Aeroangkasa | Komponen gear pendaratan, sesendal |
Shape and Size Availability
C90300 is available in various forms to suit different manufacturing needs:
| Borang | Julat Saiz | Nota |
|---|---|---|
| Round Bars | 10mm – 300mm diameter | Standard lengths up to 3.6m |
| Hollow Bars | 20mm – 250mm OD, 10mm – 200mm ID | Custom lengths available |
| Pinggan | 5mm – 100mm thickness | Width up to 1.2m, length up to 3m |
| tiub | 15mm – 200mm OD, 1.5mm – 25mm wall thickness | Standard lengths up to 3m |
| Castings | Custom sizes | Sand, centrifugal, and continuous casting available |
| Penempaan | Up to 1000kg | Custom shapes possible |
Piawaian Pengeluaran
C90300 complies with several important standards:
| Standard | Penerangan |
|---|---|
| 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:
| Negara/Wilayah | Standard | Equivalent/Similar Grade |
|---|---|---|
| USA | ASTM/UNS | C90300 |
| Eropah | DALAM | CuSn8 |
| Jepun | DIA | CAC903 |
| China | GB | ZCuSn8Pb1 |
| UK | BS | PB3 |
| Jerman | DARI | G-CuSn8 |
Welding Characteristics
Welding C90300 requires specific techniques:
| Kaedah Kimpalan | Kesesuaian | Nota |
|---|---|---|
| Kimpalan Arka Tungsten Gas (GTAW) | Cemerlang | Preferred for thin sections and precision work |
| Kimpalan Arka Logam Gas (GMAW) | bagus | Suitable for thicker sections |
| Kimpalan Arka Logam Terlindung (SMAW) | Adil | Requires proper electrode selection |
| Kimpalan Oksiasetilena | miskin | Not recommended due to high heat input |
| Kimpalan Rintangan | Adil | Permohonan terhad |
Processing Characteristics
C90300 can be processed using various methods:
| Proses | Kesesuaian | Nota |
|---|---|---|
| Pemesinan | Cemerlang | Good machinability, produces smooth finishes |
| Membentuk | Adil | Limited cold formability due to high tin content |
| Pemutus | Cemerlang | Widely used in casting applications |
| Menempa | Adil | Hot forging possible, limited cold forging |
| Rawatan Haba | bagus | Can be strengthened through heat treatment |
Menggilap
Polishing C90300 can enhance its appearance and surface properties:
| Polishing Method | Effectiveness | Nota |
|---|---|---|
| Mechanical Polishing | Cemerlang | Achieves high luster |
| Chemical Polishing | bagus | Suitable for complex shapes |
| Electro-polishing | Sangat Baik | Provides smooth, bright finish |
| Buffing | Cemerlang | For final finish and high shine |
Rawatan Haba
Heat treatment can modify the properties of C90300:
| Rawatan Haba | Tujuan | Proses |
|---|---|---|
| Penyepuhlindapan | Stress relief, softening | Heat to 550-650°C, slow cool |
| Rawatan Penyelesaian | Homogenization | Heat to 760-780°C, water quench |
| Pengerasan Umur | Increase strength and hardness | Heat to 350-400°C for 2-4 hours, air cool |
Pemprosesan Sejuk
Cold working can alter the mechanical properties of C90300:
| Cold Working Method | Effect on Properties |
|---|---|
| Berguling Sejuk | Increases strength, reduces ductility |
| Lukisan Sejuk | Improves surface finish, dimensional accuracy |
| Penempaan Sejuk | Limited applicability, may require intermediate annealing |
| Shot Peening | Improves fatigue resistance |
Kelebihan dan Kekurangan
C90300 tin bronze has several pros and cons:
| Kelebihan | Keburukan |
|---|---|
| Kekuatan tinggi | Higher cost compared to lower tin bronzes |
| Rintangan haus yang sangat baik | Limited formability |
| Good corrosion resistance | Lower electrical conductivity than pure copper |
| Low friction coefficient | Potential for dezincification in certain environments |
| Good machinability | Not suitable for high-speed applications |
| Suitable for heavy loads | May require special welding procedures |
Produk dan Perbandingan Serupa
C90300 is part of a family of tin bronzes. Here’s a comparison with similar alloys:
| Aloi | Cu % | Sn % | Elemen lain | Perbezaan Utama |
|---|---|---|---|---|
| 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 | Dalam | 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 |
Kesimpulan
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.
