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Request for Quotation
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Data Sheet:
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Kovar - Alloy K |
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Kovar Chemical Composition (Basic) Density 8.36
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| Weight
% |
Ni |
Fe |
Co |
C |
Mn |
Si |
Al |
Cr |
Mg |
Zr |
Ti |
Cu |
Mo
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| Alloy K
Kovar |
29.0
|
53.0
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17.0
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0.04 max
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0.50 max
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0.20 max
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0.10 max
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0.20 max
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0.10 max
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0.10 max
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0.10 max
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0.20 max
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0.20 max
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Kovar
(Alloy K) is a nickel-iron-cobalt
controlled-expansion alloy containing 29% nickel. Its coefficient of expansion,
which decreases with rising temperature to the inflection point, matches the
expansion rate of borosilicate glasses and alumina ceramics. Used for glass-to-metal seals in
applications requiring high reliability or resistance to thermal shock. Examples
are high-power transmitting valves, transistor leads and headers,
integrated-circuit lead frames, and photography flash bulbs.
AVAILABILITY
Alloy K
(Kovar) is
available in Bar, Rod, Tube,
Sheet, Strip, Coil, Plate and Wire. For all stock availability contact Sales.
Alloy
K Tube is available the following size ranges.
Outside
Diameter - 0.25mm (0.010") up to 16.00mm (0.625")
Wall
- 0.05mm (0.002") up to 1.00mm (0.040")
Straight
Lengths - 1.00mm (0.040") up to 5000.00mm
(197")
Coils
Lengths - 5 Metres to 15
Metres
Standard
Tolerance- OD &ID +/-0.03mm (0.0012")
Wall +/- 10%
Tight
Tolerance - OD&ID +/- 0.015mm
(0.0006")
Wall +/-3%
Some
thin wall tubes up to 25.40 mm (1.000") can be supplied.
SPECIFICATIONS
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UNS
K94610
Werkstoff
Nr 1.3981
DIN
17745
ASTM
F 15
AMS
7726 Wire
AMS
7727 Bars and Forgings
AMS
7728 Sheet, Strip and Plate
MIL-I-23011
class 1
AFNOR
NF A54-301
S.E.W
385
DILVER
P
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Registered
Names
Kovar ®
Nicoseal
®
Nicosel
®
Rodar
®
Telcoseal ®
Sealvar ®
Alloy 29-17 ®
Nilo K ®
Dilver ®
Pernifer 29-18 ®
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TYPICAL MECHANICAL PROPERTIES
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Kovar - Alloy K
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Yield
Strength (0.1% Offset)
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Tensile
Strength
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Elongation
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| psi |
MPa |
psi |
MPa |
(%)
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| 49,000 |
340 |
75,000 |
520 |
42 |
Mechanical
Properties in the Annealed Condition.
AVAILABILITY
We are experts in difficult to obtain sizes contact Sales
for many other sizes and forms.
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ASTM F15 Alloy
/ Kovar STRIP
KOVAR COIL THICKNESS
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| .004 |
.0142 |
.045 |
| .0045 |
.0145 |
.050 |
| .005 |
.015 |
.059 |
| .006 |
.020 |
.060 |
| .007 |
.025 |
.062 |
| .008 |
.030 |
.064 |
| .0098 |
.035 |
.070 |
| .010 |
.040 |
.082 |
| .012 |
.043 |
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ALL COIL SLIT TO YOUR WIDTH
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OTHER SIZES AVAILABLE UPON REQUEST
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ASTM F15 Alloy
/ Kovar SHEET COLD ROLLED
KOVAR BRIGHT ANNEALED
MIL I 23011C, CL. 1
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THICKNESS |
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WIDTHS |
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LENGTHS |
| .015 |
X |
12, 13, 24" |
X |
72 |
| .020 |
X |
12, 13, 24" |
X |
72 |
| .025 |
X |
12, 13, 24" |
X |
72 |
| .030 |
X |
12, 13, 24" |
X |
72 |
| .035 |
X |
12, 13, 24" |
X |
72 |
| .040 |
X |
12, 13, 24" |
X |
72 |
| .050 |
X |
12, 13, 24" |
X |
72 |
| .060 |
X |
12, 13, 24" |
X |
72 |
| .062 |
X |
12, 24" |
X |
72 |
| .072 |
X |
12, 24" |
X |
72 |
| .075 |
X |
12, 24" |
X |
72 |
| .080 |
X |
12, 24" |
X |
72 |
| .090 |
X |
Random Width |
X |
72 |
| .092 |
X |
Random Width |
X |
72 |
| .100 |
X |
Random Width |
X |
72 |
| .115 |
X |
Random Width |
X |
72 |
| .125 |
X |
Random Width |
X |
72 |
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OTHER SIZES AVAILABLE UPON
REQUEST
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ASTM F15 Alloy
/ Kovar COIL
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| .004 x 12 x COIL |
.0125 x 12 x COIL |
| .0045 x 12 x COIL |
.0142 x 12 x COIL |
| .005 x 12 x COIL |
.0145 x 12 x COIL |
| .006 x 12 x COIL |
.015 x 12 x COIL |
| .007 x 12 x COIL |
.020 x 12 x 72 |
| .008 x 12 x COIL |
.025 x 12 x 72 |
| .0095 x 12 x COIL |
.030 x 12 x 72 |
| .010 x 12 x COIL |
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OTHER SIZES AVAILABLE UPON REQUEST
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ASTM F15 Alloy
/ Kovar PLATE - HOT ROLLED
KOVAR / MIL I 23011C CLASS 1
NI/IRON/COBALT ALLOY
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| .150 x 15 x 72 |
.500 x 15 x 72 |
| .164 x 15 x 72 |
.515 x 15 x 72 |
| .187 x 15 x 72 |
.540 x 15 x 72 |
| .210 x 15 x 72 |
.587 x 15 x 72 |
| .235 x 15 x 72 |
.625 x 15 x 72 |
| .250 x 15 x 72 |
.687 x 15 x 72 |
| .260 x 15 x 72 |
.700 x 15 x 72 |
| .281 x 15 x 72 |
.750 x 15 x 72 |
| .312 x 15 x 72 |
.850 x 15 x 72 |
| .320 x 15 x 72 |
.860 x 15 x 48 |
| .375 x 15 x 72 |
.875 x 15 x 48 |
| .390 x 15 x 72 |
1.00 x 15 x 31 |
| .400 x 15 x 72 |
1.50 x 15 x 31 |
| .425 x 15 x 72 |
2.00 x 15 x 24 |
| .437 x 15 x 72 |
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OTHER SIZES ALSO AVAILABLE
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OTHER
SIZES AVAILABLE UPON REQUEST
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ASTM F15
Alloy / KOVAR ROD / BAR
CERTIFIED
TO -196 DEGREES C
WITH NO
PHASE TRANSFORMATION
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DIAMETERS
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| .040 |
.187 |
.500 |
1.375 |
| .050 |
.200 |
.562 |
1.500 |
| .060 |
.203 |
.625 |
1.625 |
| .062 |
.218 |
.750 |
1.750 |
| .100 |
.250 |
.875 |
2.0 |
| .125 |
.312 |
1.0 |
2.125 |
| .156 |
.375 |
1.125 |
2.5 |
| .178 |
.437 |
1.250 |
3.0 |
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AVAILABLE UP TO 6"
DIA.
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OTHER
SIZES OF KOVAR AVAILABLE UPON REQUEST
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Availability :
Kovar rod
Kovar bar
Kovar sheet
Kovar plate
Kovar wire
Kovar tube
Disclaimer
Every effort is made to ensure that
technical specifications are accurate. However, technical specifications
included herein should be used as a guideline only. All specifications are
subject to change without notice.
Sell
your Surplus Stock Online at 4metal.co.uk
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