C72200, also known as Copper Nickel Zinc Alloy, is a versatile brass alloy known for its excellent corrosion
resistance, good machinability, and electrical conductivity. This alloy is commonly used in various
applications where these properties are beneficial for performance and reliability.
Chemical Composition
C72200 is primarily composed of the following elements:
| Element |
Percentage (%) |
| Copper (Cu) |
81.5 - 83.5 |
| Nickel (Ni) |
1.8 - 2.5 |
| Zinc (Zn) |
10.5 - 12.0 |
| Lead (Pb) |
≤ 0.05 |
| Iron (Fe) |
≤ 0.10 |
| Phosphorus (P) |
≤ 0.02 |
| Others |
≤ 0.50 |
Mechanical Properties
C72200 exhibits good mechanical properties suitable for various applications:
| Property |
Value |
| Tensile Strength |
310 - 485 MPa |
| Yield Strength |
120 - 400 MPa |
| Elongation |
25 - 40% |
| Hardness (Rockwell B) |
60 - 85 |
| Electrical Conductivity |
30 - 35% IACS (International Annealed Copper Standard) |
| Density |
8.73 g/cm³ |
Corresponding Country's Brand
C72200 is recognized under different brands in various countries. Here are some equivalents:
| Country |
Brand Name |
| USA |
C72200 |
| UK |
- |
| Germany |
CuZn19Ni2Pb1Al |
| Japan |
C7220 |
| China |
H80Pb2Zn18 |
Common Questions and Answers
1. What are the primary applications of C72200 in industry?
Answer: C72200 Copper Nickel Zinc Alloy is commonly used in electrical and plumbing
applications due to its good electrical conductivity and corrosion resistance. It is used in electrical
connectors, plumbing fittings, and components requiring machinability.
2. Is C72200 suitable for use in marine environments?
Answer: C72200 exhibits good corrosion resistance, but it may not be as suitable as
specific marine alloys like Copper Nickel alloys (e.g., C70600, C71500) that are specifically designed for
seawater environments. It is more commonly used in fresh water and industrial applications.
3. How does C72200 compare to C23000 (Red Brass)?
Answer: C72200 has a higher copper content and includes nickel and zinc, whereas C23000
(Red Brass) has higher zinc content. C72200 offers better corrosion resistance and electrical conductivity,
making it suitable for more demanding applications requiring these properties.
Summary Table
| Aspect |
Details |
| Chemical Composition |
Cu (81.5-83.5%), Ni (1.8-2.5%), Zn (10.5-12.0%), Pb (≤ 0.05%), Fe (≤ 0.10%), P (≤
0.02%), Others (≤ 0.50%)
|
| Mechanical Properties |
Tensile Strength: 310-485 MPa, Yield Strength: 120-400 MPa, Elongation: 25-40%, Hardness: 60-85
Rockwell B, Electrical Conductivity: 30-35% IACS, Density: 8.73 g/cm³
|
| Country Brands |
USA: C72200, Germany: CuZn19Ni2Pb1Al, Japan: C7220, China: H80Pb2Zn18 |
| Applications |
Electrical connectors, plumbing fittings, industrial components requiring corrosion resistance
and machinability
|
C72200 Copper Nickel Zinc Alloy is a versatile brass alloy known for its corrosion resistance, electrical
conductivity, and machinability, making it suitable for various industrial applications where these
properties are essential for performance and reliability.
