|
HAFNIUM
(Hf)
GENERAL
PROPERTIES
|
Symbol:
|
Hf
|
|
Atomic
Number:
|
72
|
|
Atomic
Weight:
|
178.49
|
|
Density:
|
13.31
gm/cc
|
|
Melting
Point:
|
2227
oC
|
|
Boiling
Point:
|
4602
oC
|
|
Thermal
Conductivity:
|
0.230
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
|
35.1
microhm-cm @ 25 oC
|
|
Electronegativity:
|
1.3
Paulings
|
|
Specific
Heat:
|
0.035
Cal/g/oK
@ 25 oC
|
|
Heat
of Vaporization:
|
155
K-Cal/gm atom at 4602 oC
|
|
Heat
of Fusion:
|
6.0
Cal/gm mole
|
|
Thermal
Neutron Cross Section:
|
115
Barns
|
MATERIAL
OVERVIEW
Characteristics:
Generally similar to zirconium. Gray crystals. Good
corrosion resistance and high strength.
Hazards:
Explosive in powder form, either dry or wet with less
than 25% water. Tolerance, 0.5 mg/m3.
Toxic by inhalation. Compounds
are also toxic.
TYPICAL
ANALYSES
Impurities
in ppm excl. Zirconium
|
Material
/ Purity:
|
2N8
|
3N
|
|
Al
|
310
|
25
|
|
B
|
-
|
<0.2
|
|
Cd
|
-
|
<1
|
|
Ca
|
-
|
15
|
|
Cl
|
100
|
165
|
|
Co
|
-
|
<5
|
|
Cr
|
-
|
<10
|
|
Cu
|
-
|
<40
|
|
Fe
|
-
|
65
|
|
Mg
|
570
|
<30
|
|
Mn
|
-
|
<30
|
|
Mo
|
-
|
<10
|
|
Na
|
-
|
<10
|
|
Si
|
-
|
<40
|
|
Ni
|
25
|
-
|
|
Si
|
25
|
-
|
|
Sn
|
-
|
<10
|
|
Ti
|
25
|
<20
|
|
U
|
28
|
-
|
|
V
|
-
|
<5
|
|
W
|
-
|
<10
|
WIRE
|
Material
|
Purity
|
|
Hafnium
Wire .003” to .090”
|
2N8,
3N
|
Wire
diameters are available in increments of .001”.
Wire is spooled to order and sold by the foot or
meter.
ROD
|
Material
|
Purity
|
|
Hafnium
Rod .0625”
|
2N8,
3N
|
|
Hafnium
Rod .125”
|
2N8,
3N
|
|
Hafnium
Rod .250”
|
2N8,
3N
|
|
Hafnium
Rod .500”
|
2N8,
3N
|
|
Hafnium
Rod .625”
|
2N8,
3N
|
|
Hafnium
Rod .750”
|
2N8,
3N
|
|
Hafnium
Rod 1”
|
2N8,
3N
|
Additional
diameters can be drawn in 2-3 days.
Rod is cut to order and sold by the inch or foot.
FOIL
|
Material
|
Purity
|
|
Hafnium
Foil .001”
|
2N8,
3N
|
|
Hafnium
Foil .002”
|
2N8,
3N
|
|
Hafnium
Foil .003”
|
2N8,
3N
|
|
Hafnium
Foil .004”
|
2N8,
3N
|
|
Hafnium
Foil .005”
|
2N8,
3N
|
|
Hafnium
Foil .006”
|
2N8,
3N
|
|
Hafnium
Foil .007”
|
2N8,
3N
|
|
Hafnium
Foil .008”
|
2N8,
3N
|
|
Hafnium
Foil .009”
|
2N8,
3N
|
Foil
is cut to order and sold by the square inch or square
foot.
SHEET
|
Material
|
Purity
|
|
Hafnium
Sheet .010” to 0.5”
|
2N8,
3N
|
Sheet
thicknesses are available in increments of .001”.
Sheet is cut to order and sold by the square inch or square foot.
SPUTTERING TARGETS
|
Material
|
Purity
|
|
Hafnium
Sputtering Target
2"D X .125"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 2"D X .250"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target
3"D X .125"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 3"D X .250"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 4"D X .125"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 4"D X .250"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 5"D X .125"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 5"D X .250"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 6"D X .125"T
|
2N8,
3N
|
|
Hafnium
Sputtering Target 6"D X .250"T
|
2N8,
3N
|
|
