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Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Specifications
Brand Name :
TANKII
Model Number :
Kovar
Certification :
SGS
Place of Origin :
China
MOQ :
100KG
Price :
negotiable
Payment Terms :
L/C, T/T, Western Union
Supply Ability :
200Tons per month
Delivery Time :
7-20 work days
Packaging Details :
wooden case
Material :
Ni: 29% Co:18%
Shape :
Wire, strip, sheet, rod
Thickness :
0.05-5mm
Width :
400mm
Resistivity :
0.48 μΩ·m
Standard :
UNS K94610
Description

Ni29Co18 Kovar Expansion Alloy Strip Fe Ni Co Alloy for Sealing Glass Elements of Vacuum Relays

Description

Kovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).

Kovar (ASTM F15) has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements

Chemical Composition

Grade C% P% S% Mn% Si% Cu% Cr% Mo% Ni% Co% Fe%
Kovar Max 0.03 Max 0.020 Max 0.020 Max 0.50 Max 0.30 Max 0.20 Max 0.20 Max 0.20 28.5-29.5 16.8-17.8 Bal.

Specifications

Grade UNS Werkstoff Nr. ASTM
Kovar K94610 1.3981 F15

Physical Properties

Grade Density Melting Point
Kovar 8.17 g/cm3 1449°C

Mechanical Properties

Grade Tensile Strength N/mm²
Soft 1/4 Hard 1/2 Hard 3/4 Hard Full Hard
Kovar Strip <570 520-630 590-700 600-770 >700
Kovar Wire <585 585-725 655-795 725-860 >860

Coefficient of Expansion

Alloy Linear Coefficient of Thermal Expansion ā,10-6/℃
20-200℃ 20-300℃ 20-400℃ 20-450℃ 20-500℃ 20-600℃ 20-700℃ 20-800℃
Kovar 5.9 5.3 5.1 5.3 6.2 7.8 9.2 10.2

Size Range

Kovar Wire: ￠0.1mm-￠9mm
Kovar Bar: ￠11mm-￠200mm
Kovar Strip: 75-110mm*0.15-22mm.

Invar 36, also known as FeNi36, is iron-nickel alloys have low coefficients of expansion over only a rather narrow range of temperature. It has a low coefficient of expansion from cryogenic temperatures to about 260℃. In the dry air at home temperature, invar 36 has good resistance to corrosion. But in moist air, it may go corrosion.

Invar 36 is suitable for the applications who require low coefficient of expansion, such as production, storage and transportation of liquid gas, temperature regulation devices working below 200℃, aperture mask, unit frameworks working below -200℃ and so on.

Chemical Composition

Grade C% Si% P% S% Mn% Ni% Fe%
Invar 36 Max 0.05 Max 0.30 Max 0.020 Max 0.020 0.20-0.60 35.0-37.0 Bal.

Specifications

Grade UNS Werkstoff Nr. Strip/Sheet
Invar 36 K93600 1.3912 ASTM B388/B753

Physical Properties

Grade Density Melting Point
Invar 36 8.1 g/cm3 1430°C

Coefficient of Expansion

Alloy

Linear Coefficient of Thermal Expansion ā,10-6/℃
20-50℃ 20-100℃ 20-200℃ 20-300℃ 20-400℃ 20-500℃
Invar 36 0.6 0.8 2.0 5.1 8.0 10.0

Size Range

Invar 36 wire, bar, rod, strip, forging, plate, sheet, tube, fastener and other standard forms are available.

Product tags

high modulus sealant

,

thermal fuse cutoffs

,

soldering aluminum radiator
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Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements

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Product Detail
Brand Name :
TANKII
Model Number :
Kovar
Certification :
SGS
Place of Origin :
China
MOQ :
100KG
Price :
negotiable
Contact Supplier
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements
Ni29Co18 Kovar Expansion FeCrAl Alloy Strip For Vacuum Relays Sealing Glass Elements

Shanghai Tankii Alloy Material Co.,Ltd

Verified Supplier
11 Years
shanghai, shanghai
Since 1981
Business Type :
Manufacturer, Exporter
Main Products :
Copper Nickel Alloy Wire, Electric Resistance Wire, Thermocouple Bare Wire
Total Annual :
8000000-100000000
Employee Number :
90~100
Certification Level :
Verified Supplier
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