When you’re working on a project that requires precision, strength, และ machinability, choosing the right material becomes absolutely crucial. CuZn35Pb2 is one such brass alloy that has become a go-to for engineers and manufacturers across various industries. Known for its excellent machinability, corrosion-resistant properties, และ cost-effectiveness, CuZn35Pb2 is a versatile and reliable material.
In this comprehensive guide, we’ll cover everything you need to know about CuZn35Pb2—from its composition, properties, และ standards to its applications, advantages, และ limitations. Whether you’re new to brass alloys or a seasoned professional, this guide will provide you with deep insights into how CuZn35Pb2 can elevate your next project.
ภาพรวม
CuZn35Pb2 is a lead-containing brass alloy comprising copper (Cu), zinc (Zn), and a small percentage of lead (Pb). This composition makes it highly machinable, allowing for smooth cutting, drilling, และ forming processes in complex designs. The lead content also reduces friction during machining, which minimizes tool wear and increases production efficiency.
This material is widely used in industries requiring precision parts, such as automotive, plumbing, electrical, และ machinery manufacturing. Its combination of strength, ductility, และ corrosion resistance makes it ideal for high-performance applications.
Key Features :
- High machinability, due to lead content, allows for easier and faster production.
- ความต้านทานการกัดกร่อนที่ดี, especially in mild environments like freshwater and mildly acidic conditions.
- Moderate strength that balances toughness and ductility, ideal for parts that require both durability and flexibility.
- Good formability, making it perfect for cold working operations like bending and drawing.
- Cost-effective, offering a great balance between performance and price when compared to more expensive alloys.
Composition and Properties
Understanding the chemical composition and mechanical properties of CuZn35Pb2 is essential to determining its suitability for various applications. Below, we’ll explore the alloy’s composition and mechanical properties, which are the foundation of its performance.
องค์ประกอบทางเคมี
| องค์ประกอบ | Percentage (%) |
|---|---|
| ทองแดง (Cu) | 63 – 65 |
| สังกะสี (Zn) | 33 – 35 |
| Lead (Pb) | 1.8 – 2.2 |
| Iron (Fe) | ≤ 0.05 |
| Other Elements | Trace amounts |
Mechanical and Physical Properties
| คุณสมบัติ | ค่า |
|---|---|
| แรงดึง | 300 – 450 MPa |
| ความแข็งแรงของผลผลิต | 150 – 280 MPa |
| การยืดตัว | 20 – 30% |
| ความหนาแน่น | 8.5 g/cm³ |
| Hardness (HB) | 80 – 110 HB |
| การนำความร้อน | 120 W/m·K |
| การนำไฟฟ้า | 24% IACS |
| จุดหลอมเหลว | 900 – 950°C |
Notable Properties :
- Exceptional Machinability: Thanks to lead, it is highly machinable. This means you can drill, cut, and shape it easily, which is a huge advantage for industries that need to produce parts quickly and efficiently.
- ความต้านทานการกัดกร่อน: It performs well in non-aggressive environments like freshwater and mildly acidic environments. However, it may not be the best choice for seawater or highly corrosive conditions.
- Moderate Strength: While not the strongest brass alloy available, CuZn35Pb2 offers a good balance of ductility and durability, making it ideal for parts that need to hold up under stress but also require flexibility.
- High Formability: CuZn35Pb2 can be easily shaped through cold working methods, making it perfect for designs that require bending, stamping, or drawing.
แอปพลิเคชัน
Given its machinability, strength, และ corrosion resistance, it is used in a wide range of applications across industries. Let’s break down where this alloy really shines.
แอปพลิเคชันทั่วไป
| อุตสาหกรรม | แอปพลิเคชันทั่วไป |
|---|---|
| เกี่ยวกับยานยนต์ | Fuel connectors, valve components, electrical terminals |
| Plumbing | Fittings, faucets, valve bodies, connectors |
| Electrical | Switch components, terminals, connectors |
| Machinery | Gears, bushings, fasteners, couplings |
| การบินและอวกาศ | Sensor housings, hydraulic components |
| เครื่องอุปโภคบริโภค | Decorative hardware, door handles, locks |
Why CuZn35Pb2 Excels in These Applications
- เกี่ยวกับยานยนต์: CuZn35Pb2 is often used in fuel connectors and valve components due to its strength and machinability. It can withstand the high-pressure environments common in automotive systems, while still being easy to manufacture.
- Plumbing: The alloy’s corrosion resistance in freshwater environments makes it ideal for fittings, faucets, และ valve bodies. Additionally, CuZn35Pb2’s formability means it can be shaped into complex components without cracking.
- Electrical: With decent electrical conductivity and machinability, CuZn35Pb2 is frequently used in switch components and electrical terminals. It allows for intricate designs while maintaining reliability.
- Machinery: CuZn35Pb2’s machinability and moderate strength make it a reliable material for gears, bushings, และ fasteners—parts that need to endure stress but also require precision.
Specifications, Sizes, and Standards
It is available in various sizes, grades, และ forms to suit different applications. Below is a detailed look at its specifications and the standards it adheres to.
Common Specifications and Standards
| ข้อมูลจำเพาะ | คำอธิบาย |
|---|---|
| ASTM B16 | Standard for free-cutting brass rod, bar, and shapes |
| EN 12164 | European standard for copper and copper alloys |
| DIN 17660 | German standard for wrought copper alloys |
| JIS H3250 | Japanese standard for brass rods |
Available Sizes and Forms
| รูปร่าง | ช่วงขนาด |
|---|---|
| Rods | Diameter: 5 mm to 150 mm |
| Sheets/Plates | Thickness: 0.5 mm to 50 mm |
| Tubes | Diameter: 6 mm to 100 mm |
| Wires | Diameter: 0.5 mm to 10 mm |
Most suppliers offer cut-to-size services to accommodate specific needs. This ensures that the material is ready to use, allowing for greater flexibility in the manufacturing process.
ซัพพลายเออร์และราคา
Pricing for CuZn35Pb2 varies depending on several factors, including form, quantity, supplier location, และ market conditions. Below, we’ll explore typical pricing ranges and list some well-known suppliers.
ซัพพลายเออร์และราคา
| ผู้จัดหา | ที่ตั้ง | Price Range (per kg) | เวลานำ |
|---|---|---|---|
| ThyssenKrupp Materials | ประเทศเยอรมนี | $10 – $25 | 1-3 weeks |
| Aviva Metals | สหรัฐอเมริกา | $12 – $28 | 2-4 weeks |
| Shanghai Metal Corp | จีน | $8 – $20 | 3-5 weeks |
| Smiths Metal Centres | สหราชอาณาจักร | £9 – £22 | 1-2 weeks |
Factors Influencing CuZn35Pb2 Pricing
- รูปร่าง: Whether you purchase CuZn35Pb2 as rods, sheets, or tubes can significantly affect the price. Typically, more processed forms or custom-cut sizes are more expensive.
- Supplier Location: Shipping costs and import duties can impact the final price, especially when ordering internationally.
- Market Conditions: The prices for copper and zinc, the primary components of CuZn35Pb2, fluctuate based on global supply and demand, influencing the cost of the alloy.
Advantages and Limitations
Like any material, it has its strengths and weaknesses. Below, we’ll outline the advantages and limitations to help you determine if it’s the right material for your project.
Advantages and Limitations
| Advantages | ข้อ จำกัด |
|---|---|
| Outstanding machinability: Lead content allows for easy cutting, drilling, and shaping. | Not suitable for high-corrosion environments: CuZn35Pb2 may struggle in extreme conditions like seawater or aggressive chemicals. |
| ความต้านทานการกัดกร่อนที่ดี: Performs well in freshwater and mildly acidic environments. | Lead content: Some industries, like food and water distribution, limit the use of lead-containing materials. |
| Cost-effective: Offers a good balance of performance and price, making it a budget-friendly option for many applications. | Moderate strength: CuZn35Pb2 may not be the best choice for high-stress applications requiring higher strength. |
| Excellent formability: Can be easily bent, stamped, and drawn into complex shapes. | Environmental concerns: The lead content can raise environmental and health concerns, especially during disposal or recycling. |
| Versatile applications: Suitable for a wide range of industries, from automotive to plumbing. | Lower electrical conductivity: While decent, CuZn35Pb2’s conductivity is lower than that of pure copper. |
Comparing CuZn35Pb2 with Other Brass Alloys
When selecting the best material for your project, it’s important to compare CuZn35Pb2 with other brass alloys to see how it measures up in terms of properties, performance, และ cost.
CuZn35Pb2 Compared to Other Brass Alloys
| คุณสมบัติ | CuZn35Pb2 | CuZn39Pb2 | CuZn36Pb3 | CuZn37 (CW508L) |
|---|---|---|---|---|
| แรงดึง | 300 – 450 MPa | 320 – 450 MPa | 330 – 470 MPa | 330 – 450 MPa |
| ความสามารถกล | ยอดเยี่ยม | ยอดเยี่ยม | ยอดเยี่ยม | ดี |
| ความต้านทานการกัดกร่อน | ดี | ดี | ดี | ปานกลาง |
| การนำไฟฟ้า | 24% IACS | 25% IACS | 24% IACS | 27% IACS |
| Formability | ยอดเยี่ยม | ดี | ดี | ดีมาก |
Key Comparisons
- CuZn35Pb2 vs. CuZn39Pb2: Both alloys offer excellent machinability, but CuZn39Pb2 has slightly better corrosion resistance, making it a better choice for environments where corrosion protection is a top concern.
- CuZn35Pb2 vs. CuZn36Pb3: CuZn36Pb3 offers higher tensile strength than CuZn35Pb2, which can be beneficial for more demanding applications. However, CuZn35Pb2 is still the preferred choice for precision machining due to its higher lead content and superior formability.
- CuZn35Pb2 vs. CuZn37 (CW508L): CuZn37 provides better formability, making it ideal for applications requiring significant bending or drawing. However, CuZn35Pb2 excels in machinability, making it the better choice for high-precision parts.
คำถามที่พบบ่อย (คำถามที่พบบ่อย)
To help you get a clearer understanding of CuZn35Pb2, here are some frequently asked questions about the alloy, along with detailed answers.
| คำถาม | คำตอบ |
|---|---|
| What is CuZn35Pb2 used for? | It is widely used in industries like automotive, plumbing, และ machinery for applications such as fuel connectors, valve bodies, และ fittings. |
| How much lead is in CuZn35Pb2? | It contains between 1.8% and 2.2% lead, which significantly enhances its machinability. |
| Is CuZn35Pb2 easy to machine? | Yes, it is known for its exceptional machinability, making it easy to cut, shape, and form into intricate parts. |
| Can CuZn35Pb2 be used in plumbing applications? | Yes, it is commonly used in plumbing for fittings, valves, และ connectors due to its corrosion resistance in freshwater environments. |
| What is the tensile strength of CuZn35Pb2? | It has a tensile strength ranging from 300 to 450 MPa, depending on the form and processing method. |
| Is CuZn35Pb2 environmentally friendly? | While it offers many advantages, the presence of lead raises some environmental concerns, particularly in industries with strict regulations on lead usage. |
บทสรุป
It is a versatile and highly machinable brass alloy that offers a unique combination of strength, corrosion resistance, และ formability. Its lead content makes it an ideal material for precision machining, allowing manufacturers to produce high-quality parts with ease and efficiency.
While it may not be suitable for high-corrosion environments or lead-sensitive industries, it excels in applications where machinability and formability are top priorities. Industries such as automotive, plumbing, และ machinery manufacturing rely on CuZn35Pb2 to deliver precision and durability.
By understanding the composition, properties, และ applications of CuZn35Pb2, you can confidently choose this alloy for your next project, knowing that it will provide the performance and reliability you need.
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