Zirconium / Zr 702

Alternative and trade names
Zr 702, Zirkonium
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Description

Zirconium has a passivating oxide layer (ZrO2), which renews itself on contact with aqueous media keep telling yourself. Among other advantages, features zirconium Zr702 resistance to almost all organic acids, mineral acids and alkaline solutions. Zirconium 702 is good for welding and fully recyclable. At low temperatures, it is also very ductile.

Related Standards

Equivalent Materials

This material data has been provided by Hempel Special Metals.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyTemperatureValue

Density

23.0 °C

6.51 g/cm³

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Thermal

PropertyValue

Melting point

1852 °C

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Chemical properties

PropertyValueComment

Carbon

0.05 %

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max.

Chromium

0.2 %

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max., Cr + Fe

Hafnium

4.5 %

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max.

Hydrogen

5E-3 %

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max.

Iron

0.2 %

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max., Cr + Fe

Nitrogen

0.03 %

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max.

Oxygen

0.16 %

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max.

Zirconium

99.2 %

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min., Zr+Hf

Technological properties

Property
Application areas

Zr702 zirconium is used in chemical plants in valves, pipes, heat exchangers and pumps. These systems are, for example, apparatus for the production of acetic acid, hydrochloric acid or urea. Even in the medical field Zr702 is used because it is biocompatible and shows no toxic effects. Another application of zirconium 702 is the nuclear technology.

Welding

Matching welding consumables should be used. Quality 4.8 of welding gases (eg argon with a purity of 99.998%) are recommended.