ZR702 Zirconium Alloy Products

Chemical Compositions of Zirconium Alloys:

Grade:

ZR702

ZR705

UNS Designation:

R60702

R60705

Element, wt%:

Zirconium + Hafnium min:

99.2

95.5

Hafnium max:

4.5

4.5

Iron & Chromium, max:

0.20

0.20

Tin:

-

-

Hydrogen, max:

0.005

0.005

Nitrogen, max:

0.025

0.025

Carbon, max:

0.05

0.05

Niobium:

-

2.0-3.0

Oxygen:

0.16

0.18

Thermal Properties:

Alloy:

ZR702

ZR705

Melting Point:

1852ºC

1840ºC

Specific Heat, KJ/Kg-K: (0-100ºC)

0.2847

0.2805

Vapor Pressure:

2000ºC:

0.01

-

3600ºC:

900

-

Thermal Conductivity: (300-800K)

22 (13)

17.1 (10)

Coefficient of Thermal Expansion:

5.8 (3.2)

3.6 (2.0)

149ºC:

6.3 (3.5)

4.9 (2.7)

260ºC:

7.0 (3.9)

5.6 (3.1)

371ºC:

7.4 (4.1)

5.9 (3.3)

Latent Heat of Fusion: (Cal/gm)

60.4

-

Latent Heat of Vaporisation: (Cal/gm)

1550

-