• Electric Vacuum Kovar 4J29 K94610 Precision Alloy
  • Electric Vacuum Kovar 4J29 K94610 Precision Alloy
  • Electric Vacuum Kovar 4J29 K94610 Precision Alloy
  • Electric Vacuum Kovar 4J29 K94610 Precision Alloy
  • Electric Vacuum Kovar 4J29 K94610 Precision Alloy
  • Electric Vacuum Kovar 4J29 K94610 Precision Alloy
Electric Vacuum Kovar 4J29 K94610 Precision Alloy

Electric Vacuum Kovar 4J29 K94610 Precision Alloy

Product Details:

Place of Origin: China
Brand Name: DLX
Model Number: 4j29(kovar)

Payment & Shipping Terms:

Minimum Order Quantity: 50
Price: $18-$35
Packaging Details: Wooden Case& carton
Delivery Time: 7-21 days
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 300 tons per month
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Detail Information

Certificate: ISO9001 Shape: Sheet
Ni (Min): 28.5 Size: Customized
Color: Nickel,silver Ultimate Strength (≥ MPa):: 570
Elongation (≥ %): 30 % Application:: Glass To Metal Sealing
Brand Name:: DLX
High Light:

Kovar Precision Alloy

,

4J29 Alloys Containing Iron

,

K94610 Precision Alloy

Product Description

Electric Vacuum Kovar 4J29 K94610 Precision Alloy 0


Electric Vacuum Kovar 4J29 K94610 Precision Alloy 1


  • Precision Alloy Kovar 4J29 plate/sheet​

 

 

Precision Alloy Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Precision Alloy Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Precision Alloy its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.

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

 

Basic performance: Precision Alloy is divided into low-expansion alloy and fixed-expansion alloy, the latter is also known as sealing alloy. Precision Alloy Expansion alloy besides has the specific thermal expansion coefficient, according to the different USES also requires a good sealing property, weldability and corrosion resistance, machinability and cutting, and in the use of expansion characteristics caused by the temperature range there is no obvious change of phase transformation, Precision Alloy product is commonly bar, sheet, strip, wire and tube and so on.
Precision Alloy Expansion alloy applications: Precision Alloy is widely used in glass, metal and ceramic sealing in avionics and instruments, electric vacuum industry and other electronic devices, electric light source and other fields.

 

 

 

 

 

 

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

 

Electric Vacuum Kovar 4J29 K94610 Precision Alloy 2Electric Vacuum Kovar 4J29 K94610 Precision Alloy 3Electric Vacuum Kovar 4J29 K94610 Precision Alloy 4Electric Vacuum Kovar 4J29 K94610 Precision Alloy 5Electric Vacuum Kovar 4J29 K94610 Precision Alloy 6Electric Vacuum Kovar 4J29 K94610 Precision Alloy 7

 

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