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ISO/TR 15608 Material Group 61

Material Group 61 ISO/TR 1568: Pure zirconium

Features of pure Zirconium

Zirconium, a reactive metal, ha s high affinity for oxygen that results in the formation of a protective oxide layer in air at room temperature. This protective oxide gives this alloy their superior corrosion resistance and this oxide layer can be enhanced through a heat process.

This material exhibit good ductility even at cryogenic temperatures and good strength comparable with other common engineering alloys.

Applications of pure Zirconium

One of the major applications of Zirconium is as a corrosion-resistant material of construction for the chemical processing industry. Zirconium exhibits excellent resistance to corrosive attack in most organic and inorganic acids, salt solutions, strong alkalis, and some molten salts. Some of the more important areas in the chemical processing industry where Zirconium is being used include Reboilers, Evaporators, Tanks, Packings, Trays, Reactor Vessels, Pumps, Valves and Piping.

This material is ideal for heat exchanger applications. The linear coefficient of thermal expansion of this material is nearly one-third of the value for stainless steel giving this material superior dimensional stability at elevated temperatures.

Zirconium is weldable and the stress relief heat treatment after welding (PWHT) should be performed within 14 days after welding.

Name / GradeNumberStandardProductRemarks
R60702
R60702
R60702
R60702
702C
R60702
R60702
R60702
R60702
R60702
ASTM B-493
ASTM B-523
ASTM B-653
ASTM B-658
ASTM B-752
Forging
Smls. & welded tube
Smls. & welded fittings
Smls. & welded pipe
Casting
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
Zircaloy-2R60802ASTM B-351
ASTM B-352
ASTM B-353
Bar
Plate
Seamless and welded tube
Zircaloy-4R60804ASTM B-351
ASTM B-352
ASTM B-353
Bar
Plate
Seamless and welded tube
Table: Typical materials