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
- Valve components
• Processing characteristics: - Excellent casting properties
- Khả năng gia công tốt
• 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.
Thành phần hóa học
The chemical composition of C90300 is crucial to its performance characteristics:
| Yếu tố | Phạm vi phần trăm | Hàm số |
|---|---|---|
| Đồng | 86.0 – 89.0% | Base metal, provides ductility and conductivity |
| Tín (Sn) | 7.5 – 9.0% | Increases strength and wear resistance |
| Lead (Pb) | 0.30 – 1.5% | Improves machinability |
| Kẽm (Zn) | 1.0 – 3.0% | Enhances fluidity in casting, deoxidizer |
| Niken (Ni) | 1.0% max | Improves corrosion resistance |
| Sắt (Fe) | 0tối đa 0,20% | Grain refiner, increases strength |
| Phốt pho (P) | 0.05 – 0.35% | Deoxidizer, improves fluidity |
| Antimony (Sb) | 0tối đa 0,20% | Enhances strength and hardness |
| Lưu huỳnh (S) | 0.05% max | Impurity, controlled to minimize negative effects |
| Nhôm (Al) | 0tối đa 0,005% | Deoxidizer |
| Silic (Si) | 0tối đa 0,005% | Improves wear resistance |
Tính chất cơ học
The mechanical properties of C90300 contribute to its suitability for various industrial applications:
| Tài sản | Giá trị |
|---|---|
| Độ bền kéo (phút) | 40 ksi (276 MPa) |
| Sức mạnh năng suất (phút) | 20 ksi (138 MPa) |
| Độ giãn dài (phút) | 20% |
| Brinell độ cứng | 70 HB (typical) |
| Tỉ trọng | 0.319 lb/in³ (8.83 g/cm³) |
| Mô đun đàn hồi | 15.5 x 10^6 psi (107 GPa) |
Hiệu suất ở nhiệt độ khác nhau
C90300 maintains its properties across a range of temperatures:
| Phạm vi nhiệt độ | Đặc tính hiệu suất |
|---|---|
| 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 |
Ứng dụng công nghiệp
C90300 finds use in various industries due to its unique properties:
| Ngành công nghiệp | Các ứng dụng |
|---|---|
| Hàng hải | Propeller hubs, bushings, valve components |
| Ô tô | Thrust washers, bushings, wear plates |
| Máy móc công nghiệp | Gears, bearings, wear strips |
| Dầu khí | Pump components, valve seats |
| Sự thi công | Bridge bearings, heavy equipment components |
| Không gian vũ trụ | Các bộ phận của bộ phận hạ cánh, ống lót |
Hình dạng và kích thước sẵn có
C90300 is available in various forms to suit different manufacturing needs:
| Mẫu đơn | Phạm vi kích thước | Ghi chú |
|---|---|---|
| Round Bars | 10mm – 300mm diameter | Standard lengths up to 3.6m |
| Hollow Bars | 20mm – 250mm OD, 10mm – 200mm ID | Custom lengths available |
| Tấm | 5mm – 100mm thickness | Width up to 1.2m, length up to 3m |
| Ống | 15mm – 200mm OD, 1.5mm – 25mm wall thickness | Standard lengths up to 3m |
| Castings | Custom sizes | Sand, centrifugal, and continuous casting available |
| Sự rèn luyện | Up to 1000kg | Custom shapes possible |
Tiêu chuẩn sản xuất
C90300 complies with several important standards:
| Tiêu chuẩn | Sự miêu tả |
|---|---|
| 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:
| Quốc gia/Khu vực | Tiêu chuẩn | Equivalent/Similar Grade |
|---|---|---|
| Hoa Kỳ | ASTM/UNS | C90300 |
| Châu Âu | TRÊN | CuSn8 |
| Nhật Bản | JIS | CAC903 |
| Trung Quốc | GB | ZCuSn8Pb1 |
| Vương quốc Anh | BS | PB3 |
| nước Đức | TỪ | G-CuSn8 |
Đặc điểm hàn
Welding C90300 requires specific techniques:
| Welding Method | Sự phù hợp | Ghi chú |
|---|---|---|
| Gas Tungsten Arc Welding (GTAW) | Xuất sắc | Preferred for thin sections and precision work |
| Gas Metal Arc Welding (GMAW) | Tốt | Suitable for thicker sections |
| Shielded Metal Arc Welding (SMAW) | Hội chợ | Requires proper electrode selection |
| Hàn oxyacetylene | Nghèo | Not recommended due to high heat input |
| Nó có tính dẫn điện tốt và chống ăn mòn | Hội chợ | Limited applications |
Processing Characteristics
C90300 can be processed using various methods:
| Tiến trình | Sự phù hợp | Ghi chú |
|---|---|---|
| Sử dụng các điện cực cơ bản hợp kim Crom-Niken-Molypden cho | Xuất sắc | Good machinability, produces smooth finishes |
| Hình thành | Hội chợ | Limited cold formability due to high tin content |
| Đúc | Xuất sắc | Widely used in casting applications |
| Rèn | Hội chợ | Hot forging possible, limited cold forging |
| Xử lý nhiệt | Tốt | Can be strengthened through heat treatment |
Đánh bóng
Polishing C90300 can enhance its appearance and surface properties:
| Polishing Method | Effectiveness | Ghi chú |
|---|---|---|
| Mechanical Polishing | Xuất sắc | Achieves high luster |
| Chemical Polishing | Tốt | Suitable for complex shapes |
| Electro-polishing | Rất tốt | Provides smooth, bright finish |
| Buffing | Xuất sắc | For final finish and high shine |
Xử lý nhiệt
Heat treatment can modify the properties of C90300:
| Xử lý nhiệt | Purpose | Tiến trình |
|---|---|---|
| Ủ | Stress relief, softening | Heat to 550-650°C, slow cool |
| Giải pháp điều trị | 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 |
Chế biến lạnh
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 |
| Rèn nguội | Limited applicability, may require intermediate annealing |
| Shot Peening | Improves fatigue resistance |
Ưu điểm và nhược điểm
C90300 tin bronze has several pros and cons:
| Thuận lợi | Nhược điểm |
|---|---|
| Cường độ cao | Higher cost compared to lower tin bronzes |
| Khả năng chống mài mòn tuyệt vời | Limited formability |
| Good corrosion resistance | Lower electrical conductivity than pure copper |
| Low friction coefficient | Potential for dezincification in certain environments |
| Khả năng gia công tốt | Not suitable for high-speed applications |
| Suitable for heavy loads | May require special welding procedures |
Sản phẩm tương tự và so sánh
C90300 is part of a family of tin bronzes. Here’s a comparison with similar alloys:
| Hợp kim | Cu % | Sn % | Other Elements | Sự khác biệt chính |
|---|---|---|---|---|
| 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 | 12-10 | 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 |
Phần kết luận
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.
