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Bright Surface High Temp Alloys 4J29 Kovar Capillary Tube

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Bright Surface High Temp Alloys 4J29 Kovar Capillary Tube

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Brand Name : OHMALLOY

Model Number : Inconel600

Certification : ISO ROHS

Place of Origin : China(Shanghai)

MOQ : 20kg

Price : negotiable

Payment Terms : , L/C, T/T

Supply Ability : 20000T/Year

Delivery Time : 7-20days after your deposit received

Packaging Details : IN Wooden box

UNS : NO6600

Surface : Bright

Werkstoff Nr. : W.Nr.2.4816

Power or not : Not

Type : Seamless

Craft : Cold Drawing

Shape : Tube

Thickness : 0.01~50mm

OD : 0.20~360mm

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4J29 KOVAR CAPILLARY TUBER

Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 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.

Kovar alloy 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.

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.
Kovar K94610 1.3981

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 a,10-6/°C
20-200°C 20-300°C 20-400°C 20-450°C 20-500°C 20-600°C 20-700°C 20-800°C
Kovar 5.9 5.3 5.1 5.3 6.2 7.8 9.2 10.2

Bright Surface High Temp Alloys 4J29 Kovar Capillary Tube


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High Temp Alloys Capillary Tube

      

Kovar Capillary Tube

      

Bright Surface High Temp Alloys Tube

      
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