Chemical Requirement

Element

Composition%

Grade

R60700

R60702

R60704

R60705

R60706

Zr+hf min

99.2

99.2

97.5

95.5

95.5

Hf max

4.5

4.5

4.5

4.5

4.5

Iron+chromium

0.2max

0.2max

0.2to0.4

0.2max

0.2max

Tin

…

…

1.0to2.0

…

…

Hydrogen max

0.005

0.005

0.005

0.005

0.005

Nitrogen max

0.025

0.025

0.025

0.025

0.025

Carbon max

0.05

0.05

0.05

0.05

0.05

Niobon max

…

…

…

2.0to3.0

2.0to3.0

Oxygen max

0.10

0.16

0.18

0.18

0.16

Classfication

Low oxygen zr

Unalloyed zr

Zr-tin

Zr-niobium

Zr-niobium