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Kovar Material Precision Metal Bright Kovar Wire For Multipin Headers Seals

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Kovar Material Precision Metal Bright Kovar Wire For Multipin Headers Seals

Brand Name OHMALLOY
Model Number Ohmalloy-Kovar
Certification ISO
Place of Origin China
Minimum Order Quantity 20kg
Payment Terms T/T, L/C,
Packaging Details Wooden-Case
Material Kovar
Type of Material Precision Alloy
Diameter 0.05mm~10mm
Package Spool&Coil
Coil Weight 5~50kg
Common name FeNi29Co17
Application Glass Metal Seal
Chemistry Fe,Ni,Co Alloy
Alloy type Expansion Alloy
Detailed Product Description

Kovar Material Precision Metal Bright Kovar Wire For Multipin Headers Seals

 

Kovar(4J29) Alloy Material Wire
Kovar/4J29/UNS K94610/W.Nr.1.3912

General 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.

Chemical Composition

GradeC%P%S%Mn%Si%Cu%Cr%Mo%Ni%Co%Fe%
KovarMax 0.03Max 0.020Max 0.020Max 0.50Max 0.30Max 0.20Max 0.20Max 0.2028.5-29.516.8-17.8Bal.

Specifications

GradeUNSWerkstoff Nr.ASTM
KovarK946101.3981F15 

Physical Properties

GradeDensityMelting Point
Kovar8.17 g/cm31449°C

Mechanical Properties

GradeTensile Strength N/mm²
Soft1/4 Hard1/2 Hard3/4 HardFull Hard
Kovar Strip<570520-630590-700600-770>700
Kovar Wire<585585-725655-795725-860>860

Coefficient of Expansion

AlloyLinear Coefficient of Thermal Expansion ā,10-6/℃
20-200℃20-300℃20-400℃20-450℃20-500℃20-600℃20-700℃20-800℃
Kovar5.95.35.15.36.27.89.210.2

 

 

 

Product Tags: nickel iron alloy   low expansion alloys  
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