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Zirconium Welding Pipe Zr702 ASTM B523 , ASTM B658, material Zr702 , Zr705 for aircraft, aerospace, chemical and heatexchanger high quality Zirconium Welding Pipe.
Known as Zr702, the zirconium (UNS R60702) is a hafnium-containing commercial grade of zirconium which is widely used in industrial applications such as chemical processing equipment. Due to the exceptional corrosion resistance of zirconium to an extensive range of media, zirconium tubes (usually Zr702) are widely used for the construction of heat exchangers, coolers, condensers, heaters, piping and other boiler & pressure vessel equipment under harsh conditions. The annealed zirconium tubes shall be manufactured to ASTM B523/ ASME SB-523 in either seamless or welded type.
Referenced Documents
ASTM Standards: 3
B 614 Practice for Descaling and Cleaning Zirconium and
Zirconium Alloy Surfaces
E 8 Test Methods for Tension Testing of Metallic Materials E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications 2.2 ANSI Standard:
B36.19 Stainless Steel Pipe4
ASME Standard:
ASME Boiler and Pressure Vessel Code, Section VIII5
ASME Boiler and Pressure Vessel Code, Section IX5
Compostion:
| Grade | Element composition (%) < | ||||||||
| Zr+Hf | Hf | Fe+Cr | Sn | H | N | C | Nb | O | |
| R60702 | 99.2 | 4.5 | 0.20 | -- | 0.005 | 0.025 | 0.05 | -- | 0.16 |
| R60704 | 97.5 | 4.5 | 0.20~0.40 | 1.0~2.0 | 0.005 | 0.025 | 0.05 | -- | 0.18 |
| R60705 | 95.5 | 4.5 | 0.2 | -- | 0.005 | 0.025 | 0.05 | 2.0~3.0 | 0.18 |
Machanical Properties:
| Material | State | Rm (≥)/MPa | Rp0.2 (≥)/MPa | A50mm (≥)/% |
| Zirconium 702 (UNS R60702) | Annealed | 379 | 207 | 16 |
| Zirconium 704 (UNS R60704) | Annealed | 413 | 241 | 14 |
| Zirconium 705 (UNS R60705) | Annealed | 552 | 379 | 16 |
Applications: marine, aerospace, vacuum salt making, automotive industry, paper and textile industry, power industry, metallurgy industry, chlor-alkali industry, chemical fertilizer Industry, seawater desalination, instrument manufacturing, chlor-alkali manufacturing equipment, power equipment and other industries.
According to the heat exchange area and pressure, there are usually size:
57×3,57×2.5,45×2.5,38×2.5,38×2,32×2.5,30×1.5,25×2,25×1.5mm etc., can be produced according to user requirements. In addition, we can also provide a variety of shaped pipe fittings, such as serpentine tubes, U-shaped tubes, etc.
Features: It has strong corrosion resistance, good thermal conductivity and long service life.
Testing :
