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
- 良好な機械加工性
• 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.
化学組成
The chemical composition of C90300 is crucial to its performance characteristics:
| 要素 | Percentage Range | Function |
|---|---|---|
| 銅 | 86.0 – 89.0% | Base metal, provides ductility and conductivity |
| 錫(Sn) | 7.5 – 9.0% | Increases strength and wear resistance |
| 鉛(Pb) | 0.30 – 1.5% | Improves machinability |
| 亜鉛(Zn) | 1.0 – 3.0% | Enhances fluidity in casting, deoxidizer |
| ニッケル(Ni) | 1.0% max | Improves corrosion resistance |
| 鉄(Fe) | 0最大.20% | Grain refiner, increases strength |
| リン(P) | 0.05 – 0.35% | Deoxidizer, improves fluidity |
| Antimony (Sb) | 0最大.20% | Enhances strength and hardness |
| 硫黄(S) | 0.05% max | Impurity, controlled to minimize negative effects |
| アルミニウム(Al) | 0最大.005% | Deoxidizer |
| シリコン（Si） | 0最大.005% | Improves wear resistance |
機械的性質
The mechanical properties of C90300 contribute to its suitability for various industrial applications:
| 財産 | 価値 |
|---|---|
| 引張強さ(分) | 40 ksi (276 MPa) |
| 降伏強さ (分) | 20 ksi (138 MPa) |
| 伸び(分) | 20% |
| ブリネル硬度 | 70 HB (typical) |
| 密度 | 0.319 lb/in³ (8.83 g/cm³) |
| 弾性率 | 15.5 x 10^6 psi (107 GPa) |
さまざまな温度でのパフォーマンス
C90300 maintains its properties across a range of temperatures:
| 温度範囲 | 性能特性 |
|---|---|
| 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 |
産業用途
C90300 finds use in various industries due to its unique properties:
| 業界 | アプリケーション |
|---|---|
| マリン | Propeller hubs, bushings, valve components |
| 自動車 | Thrust washers, bushings, wear plates |
| 産業機械 | Gears, bearings, wear strips |
| オイルとガス | Pump components, valve seats |
| 工事 | Bridge bearings, heavy equipment components |
| 航空宇宙 | 着陸装置コンポーネント、ブッシュ |
形状とサイズの入手可能性
C90300 is available in various forms to suit different manufacturing needs:
| 形状 | サイズ範囲 | 注意事項 |
|---|---|---|
| Round Bars | 10mm – 300mm diameter | Standard lengths up to 3.6m |
| Hollow Bars | 20mm – 250mm OD, 10mm – 200mm ID | Custom lengths available |
| プレート | 5mm – 100mm thickness | Width up to 1.2m, length up to 3m |
| チューブ | 15mm – 200mm OD, 1.5mm – 25mm wall thickness | Standard lengths up to 3m |
| Castings | カスタムサイズ | Sand, centrifugal, and continuous casting available |
| 鍛造品 | Up to 1000kg | Custom shapes possible |
製造基準
C90300 complies with several important standards:
| 標準 | 説明 |
|---|---|
| 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:
| 国/地域 | 標準 | Equivalent/Similar Grade |
|---|---|---|
| アメリカ合衆国 | ASTM/UNS | C90300 |
| ヨーロッパ | で | CuSn8 |
| 日本 | 彼 | CAC903 |
| 中国 | GB | ZCuSn8Pb1 |
| イギリス | BS | PB3 |
| ドイツ | から | G-CuSn8 |
溶接特性
Welding C90300 requires specific techniques:
| 溶接方法 | 適合性 | 注意事項 |
|---|---|---|
| Gas Tungsten Arc Welding (GTAW) | 素晴らしい | Preferred for thin sections and precision work |
| Gas Metal Arc Welding (GMAW) | 良い | Suitable for thicker sections |
| 被覆アーク溶接(SMAW) | 公平 | Requires proper electrode selection |
| 酸素アセチレン溶接 | 貧しい | Not recommended due to high heat input |
| 抵抗溶接 | 公平 | Limited applications |
Processing Characteristics
C90300 can be processed using various methods:
| プロセス | 適合性 | 注意事項 |
|---|---|---|
| 機械加工 | 素晴らしい | Good machinability, produces smooth finishes |
| 形にする | 公平 | Limited cold formability due to high tin content |
| 鋳造 | 素晴らしい | Widely used in casting applications |
| 鍛造 | 公平 | Hot forging possible, limited cold forging |
| 熱処理 | 良い | Can be strengthened through heat treatment |
研磨
Polishing C90300 can enhance its appearance and surface properties:
| 研磨方法 | Effectiveness | 注意事項 |
|---|---|---|
| 機械研磨 | 素晴らしい | Achieves high luster |
| Chemical Polishing | 良い | Suitable for complex shapes |
| 電解研磨 | とても良い | Provides smooth, bright finish |
| バフ掛け | 素晴らしい | For final finish and high shine |
熱処理
Heat treatment can modify the properties of C90300:
| 熱処理 | 目的 | プロセス |
|---|---|---|
| アニーリング | Stress relief, softening | Heat to 550-650°C, slow cool |
| 溶体化処理 | Homogenization | Heat to 760-780°C, water quench |
| Age Hardening | 強度と硬度を高める | Heat to 350-400°C for 2-4 hours, air cool |
冷間加工
Cold working can alter the mechanical properties of C90300:
| Cold Working Method | Effect on Properties |
|---|---|
| 冷間圧延 | Increases strength, reduces ductility |
| 冷間引抜 | Improves surface finish, dimensional accuracy |
| 冷間鍛造 | Limited applicability, may require intermediate annealing |
| Shot Peening | Improves fatigue resistance |
長所と短所
C90300 tin bronze has several pros and cons:
| 利点 | 短所 |
|---|---|
| 高強度 | Higher cost compared to lower tin bronzes |
| Excellent wear resistance | Limited formability |
| Good corrosion resistance | Lower electrical conductivity than pure copper |
| Low friction coefficient | Potential for dezincification in certain environments |
| 良好な機械加工性 | Not suitable for high-speed applications |
| Suitable for heavy loads | May require special welding procedures |
類似製品と比較
C90300 is part of a family of tin bronzes. Here’s a comparison with similar alloys:
| 合金 | 銅% | Sn % | Other Elements | 主な違い |
|---|---|---|---|---|
| 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 | で | 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 |
結論
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.
