Zirconium tube/pipe is an alloy tube material made from zirconium and other metals.Due to the excellent nuclear and corrosion resistance of zirconium,Zirconium alloy tube/pipe are often used in nuclear fuel assemblies and structures in water-cooled reactors.It’s an important nuclear material.
Zirconium pipe fittings grades |
Zirconium 702 (pure grade) |
Zirconium 704 (Zr - Tin) |
|
Zirconium 705 (Zr - Nb) |
|
Zirconium pipe fittings specification |
ASME B16.5 |
ASTM B653 / 653M |
Mechanical properties:
|
R60702 |
R60704 |
R60705 |
tensile strength |
55[380] |
60[415] |
80[550] |
yield strength |
30[205] |
35[240] |
55[380] |
Tensile ratio |
16 |
14 |
16 |
Process characteristics:
1. The friction coefficient between zirconium and die is high, and it is easy to adhere to the surface of die.
2. The thermal effect of plastic deformation is obvious, and good lubrication condition is required during processing.
3. Processing specifications have a more sensitive effect on the performance of products.Special attention should be paid to the control of cold-working and heat-treatment processes before the finished product to meet the application requirements.
4. The dimension precision and surface quality of tube/pipe are very high.Therefore, the process equipment should have good precision, and the design and manufacture of die and mould should be advanced and reasonable.
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