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Zirconium & Zirconium Alloy Forgings

The zirconium & zirconium alloy forgings shall be manufactured to ASTM B493 covering 3 grades: Grade R60702: unalloyed zirconium, Grade R60704: zirconium-zin alloy, Grade R60705: zirconium-niobium alloy. All forgings shall be furnished in annealed conditions.

Zirconium R60702 forged flanges & fittings

Zirconium forged flanges & fittings, ASTM B493 Gr. R60702.

Definition of zirconium & zirconium alloy forgings: parts, including semi-finished products, or complex shapes, produced by hot mechanical work using hammers, presses, or forging machines; a lot shall consist of a material of the same size, shape, condition, and finish produced from the same ingot or powder blend by the same reduction schedule and the same heat treatment parameters. The Zr or Zr alloy forgings shall be furnished with an 8 h period for final continuous anneal.

Chemical Composition of Zirconium & Zirconium Alloy Forging

ElementASTM B493 Zr & Zr Alloy Forging Grades
R60702R60704R60705
Zirconium(+Hf)≥99.2≥97.5≥95.5
Hafnium≤4.5≤4.5≤4.5
Iron+Chromium≤0.20.2~0.4≤0.2
Tin-1.0~2.0-
Hydrogen≤0.005≤0.005≤0.005
Nitrogen≤0.025≤0.025≤0.025
Carbon≤0.05≤0.05≤0.05
Niobium--2.0~3.0
Oxygen≤0.16≤0.18≤0.18
*Unit of all values: %.

Mechanical Properties of Zirconium & Zirconium Alloy Forging

ASTM B493Tensile Strength, min.Yield Strength, min.Elongation
GradeksiMPaksiMPamin. %
R60702553803020516
R60704604153524014
R60705704855538016
*The specimen shall be in annealed condition and tested at room temperature.

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Zirconium & Zirconium Alloy

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