Zinc alloys and standards
TENZA cast, a.s. is a specialist in zinc alloys and high-pressure die castings. We process alloys such as Zamak, ZnAl4Cu, ZnAl4Cu3, and ZnAl4 in accordance with ČSN standards 423558, 423560, and 423562. We manufacture precision zinc castings for the automotive, electrical engineering, and mechanical engineering industries.
Precision and Quality of Zinc Castings
Zinc alloys (Zn) are among the most widely used materials in high-pressure die casting. Thanks to their mechanical properties, high strength, and ability to reproduce fine details, they are applied across a broad range of industrial sectors.
The most commonly used alloys belong to the Zamak (Zamac) group and their modifications, manufactured in compliance with both international and Czech technical standards.
Most Commonly Used Zinc Alloys
Zamak (ZnAl4Cu1, ZnAl4Cu, ZnAl4Cu3, ZnAl4)
- Alloys containing aluminum (Al) and copper (Cu),
- Excellent strength and dimensional stability,
- Suitable for complex and highly detailed castings,
- Easy surface finishing – electroplating and painting.
Specification and Designation
- Z410, Z400, Z430 (též Zn 410, Zn 400, Zn 430 / ZP 410, ZP 400, ZP 430),
- Corresponding Czech technical standards:
- ČSN 423558 – ZnAl4Cu1,
- ČSN 423560 – ZnAl4Cu3,
- ČSN 423562 – ZnAl4.
Properties and Applications of Individual Alloys
|
Alloy |
Standard (ČSN) |
Chemical composition |
Typical applications |
Properties |
|
ZnAl4Cu1 (Zamak 410) |
ČSN 423558 |
Zn + 4 % Al + 1 % Cu |
Precision castings, electrical engineering components |
High strength, good dimensional stability |
|
ZnAl4Cu3 (Zamak 430) |
ČSN 423560 |
Zn + 4 % Al + 3 % Cu |
Mechanical engineering parts, automotive components |
Higher hardness, increased wear resistance |
|
ZnAl4 (Zamak 400) |
ČSN 423562 |
Zn + 4 % Al |
Design parts, decorative elements |
Good ductility, easy surface finishing |
Advantages of Zinc Alloy Castings
- Excellent mechanical properties,
- Capability to produce highly complex shapes,
- High dimensional accuracy with minimal tolerances,
- Long service life,
- Efficient serial production.
Zinc Castings in Practice
Our zinc castings are primarily used in:
- Automotive industry – brackets, mounts, functional components,
- Electrical engineering – housings, terminals, connectors,
- Mechanical engineering – structural elements, gears, levers,
- Consumer goods industry – decorative and design components.
TENZA cast, a.s. – Your Supplier of Zinc Alloys
We are specialists in zinc alloys and high-pressure die castings. With modern technology and in-depth knowledge of applicable standards, we deliver products that meet even the most demanding requirements.