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HAFNIUM
(Hf)
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.
GENERAL
PROPERTIES
|
Symbol:
|
Hf
|
|
Atomic
Number:
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72
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|
Atomic
Weight:
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178.49
|
|
Density:
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13.31
gm/cc
|
|
Melting
Point:
|
2227
oC
|
|
Boiling
Point:
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4602
oC
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|
Thermal
Conductivity:
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0.230
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
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35.1
microhm-cm @ 25 oC
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|
Electronegativity:
|
1.3
Paulings
|
|
Specific
Heat:
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0.035
Cal/g/oK
@ 25 oC
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|
Heat
of Vaporization:
|
155
K-Cal/gm atom at 4602 oC
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|
Heat
of Fusion:
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6.0
Cal/gm mole
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|
Thermal
Neutron Cross Section:
|
115
Barns
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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
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Cu
|
-
|
<40
|
|
Fe
|
-
|
65
|
|
Mg
|
570
|
<30
|
|
Mn
|
-
|
<30
|
|
Mo
|
-
|
<10
|
|
Na
|
-
|
<10
|
|
Si
|
-
|
<40
|
|
Ni
|
25
|
-
|
|
Si
|
25
|
-
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|
Sn
|
-
|
<10
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Ti
|
25
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<20
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U
|
28
|
-
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V
|
-
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<5
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W
|
-
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<10
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HAFNIUM
WIRE
|
Material
|
Purity
|
|
Hafnium
Wire .003” to .090”
|
2N8,
3N
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Wire
diameters are available in increments of .001”.
Wire is spooled to order and sold by the foot or
meter.
HAFNIUM
ROD
|
Material
|
Purity
|
|
Hafnium
Rod .0625”
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2N8,
3N
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|
Hafnium
Rod .125”
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2N8,
3N
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Hafnium
Rod .250”
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2N8,
3N
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|
Hafnium
Rod .500”
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2N8,
3N
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Hafnium
Rod .625”
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2N8,
3N
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Hafnium
Rod .750”
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2N8,
3N
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Hafnium
Rod 1”
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2N8,
3N
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Additional
diameters can be drawn in 2-3 days.
Rod is cut to order and sold by the inch or foot.
HAFNIUM
FOIL
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Material
|
Purity
|
|
Hafnium
Foil .001”
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2N8,
3N
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|
Hafnium
Foil .002”
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2N8,
3N
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Hafnium
Foil .003”
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2N8,
3N
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|
Hafnium
Foil .004”
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2N8,
3N
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|
Hafnium
Foil .005”
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2N8,
3N
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Hafnium
Foil .006”
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2N8,
3N
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|
Hafnium
Foil .007”
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2N8,
3N
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|
Hafnium
Foil .008”
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2N8,
3N
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|
Hafnium
Foil .009”
|
2N8,
3N
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Foil
is cut to order and sold by the square inch or square
foot.
HAFNIUM
SHEET
|
Material
|
Purity
|
|
Hafnium
Sheet .010” to 0.5”
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2N8,
3N
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Sheet
thicknesses are available in increments of .001”.
Sheet is cut to order and sold by the square inch or square foot.
HAFNIUM
SPUTTERING TARGETS
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Material
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Purity
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Hafnium
Sputtering Target 2"D X .125"T
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2N8,
3N
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Hafnium
Sputtering Target 2"D X .250"T
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2N8,
3N
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Hafnium
Sputtering Target 3"D X .125"T
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2N8,
3N
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Hafnium
Sputtering Target 3"D X .250"T
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2N8,
3N
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Hafnium
Sputtering Target 4"D X .125"T
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2N8,
3N
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Hafnium
Sputtering Target 4"D X .250"T
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2N8,
3N
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Additional
sizes and sputtering targets produced from compounds
are available
upon request.
HAFNIUM
POWDER, SHOT, PELLETS, & INGOT
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Material
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Purity
|
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Hafnium
Shot .125"
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2N8,
3N
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Hafnium
Pellets .125"D
X .125"L
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2N8,
3N
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Hafnium
Pellets .250"D X .250"L
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2N8,
3N
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Hafnium
Ingot
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2N8,
3N
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Hafnium
Powder-100 Mesh
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2N8,
3N
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Hafnium
Powder-325 Mesh
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2N8,
3N
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Powder,
shot, pellets, and ingots are packaged to order and
sold by the gram or kilogram.
HAFNIUM
COMPOUNDS
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Material
|
Purity
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Hafnium
Boride HfB2
-325 Mesh
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2N5
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Hafnium
Carbide HfC -150 +325 Mesh
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2N5
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Hafnium
Carbide HfC -325 Mesh +10 Microns
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2N5
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Hafnium
Carbide HfC -325 Mesh
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2N5
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Hafnium
Chloride HfCl4
-80 Mesh
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2N
4N
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Hafnium
Fluoride HfF4
1/2"-1/8" Pieces
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3N
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Hafnium
Fluoride HfF4
-60 Mesh
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3N
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Hafnium
Hydride HfH2
-325 Mesh
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2N8
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Hafnium
Oxide HfO2
Tablets
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3N
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Hafnium
Oxide HfO2
1/2"-1/8" Pieces
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3N
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Hafnium
Oxide HfO2
-200 Mesh
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2N
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Hafnium
Oxide HfO2
-325 Mesh
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3N5
5N
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Hafnium
Oxychloride HfOCl2-H2O
-80 Mesh
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2N
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Compounds
are packaged to order and sold by the gram or
kilogram.
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