C69300, also known as Copper-Zinc-Lead Alloy, is a brass alloy known for its excellent machinability and
corrosion resistance. This alloy is commonly used in various applications where these properties are
essential for performance and reliability.
Chemical Composition
C69300 is primarily composed of the following elements:
| Element |
Percentage (%) |
| Copper (Cu) |
60.0 - 63.0 |
| Zinc (Zn) |
34.0 - 36.0 |
| Lead (Pb) |
2.5 - 3.5 |
| Iron (Fe) |
≤ 0.35 |
| Nickel (Ni) |
≤ 0.25 |
| Aluminum (Al) |
≤ 0.05 |
| Others |
≤ 0.50 |
Mechanical Properties
C69300 exhibits excellent mechanical properties suitable for various applications:
| Property |
Value |
| Tensile Strength |
290 - 490 MPa |
| Yield Strength |
150 - 420 MPa |
| Elongation |
15 - 30% |
| Hardness (Rockwell B) |
60 - 90 |
| Electrical Conductivity |
27 - 35% IACS (International Annealed Copper Standard) |
| Density |
8.53 g/cm³ |
Corresponding Country's Brand
C69300 is recognized under different brands in various countries. Here are some equivalents:
| Country |
Brand Name |
| USA |
C69300 |
| UK |
- |
| Germany |
CuZn34Pb2 |
| Japan |
C6930 |
| China |
H68Pb2 |
Common Questions and Answers
1. What are the primary applications of C69300 in industry?
Answer: C69300 is commonly used in applications requiring excellent machinability and
corrosion resistance. It finds applications in plumbing fittings, electrical connectors, valves, and
components requiring precision machining.
2. Is C69300 suitable for drinking water applications?
Answer: Yes, C69300 is suitable for drinking water applications due to its corrosion
resistance and compliance with drinking water standards. It is often used in plumbing fittings and valves
where contact with potable water is necessary.
3. How does C69300 compare to other brass alloys in terms of machinability?
Answer: C69300 exhibits excellent machinability, making it easy to cut, drill, and shape
using standard machining techniques. This property makes it ideal for applications requiring intricate
machining operations.
Summary Table
| Aspect |
Details |
| Chemical Composition |
Cu (60.0-63.0%), Zn (34.0-36.0%), Pb (2.5-3.5%), Fe (≤ 0.35%), Ni (≤ 0.25%), Al (≤
0.05%), Others (≤ 0.50%)
|
| Mechanical Properties |
Tensile Strength: 290-490 MPa, Yield Strength: 150-420 MPa, Elongation: 15-30%, Hardness: 60-90
Rockwell B, Electrical Conductivity: 27-35% IACS, Density: 8.53 g/cm³
|
| Country Brands |
USA: C69300, Germany: CuZn34Pb2, Japan: C6930, China: H68Pb2 |
| Applications |
Plumbing fittings, electrical connectors, valves, components requiring excellent machinability
and corrosion resistance
|
C69300 Copper-Zinc-Lead Alloy is a versatile brass alloy known for its excellent machinability and corrosion
resistance, making it suitable for a wide range of industrial and plumbing applications where reliability
and ease of machining are crucial.
