Nickel Alloy UNS KOVAR 4J29 tube / pipe with high quality
2021-06-02 12:04:46
Model NO.: NiCoFe
Sample: Small Order Accepted
standard: GB/ASTM/JIS/BIS/DIN
State: Soft 1/4hard 1/2hard hard T-hard
surface: Bright
OEM: YES
MOQ: 100kilograms
Trademark: TANKII
Transport Package: Wooden Cases
Specification: SGS
Origin: Shanghai
HS Code: 75052200
Nickel Alloy UNS KOVAR 4J29 tube / pipe with high qualityRelative Grade:
29H Kovar Nilo K KV-1 Dilver P0 Vacon 1229H-B Rodar Telcaseal KV-2 Dilver P1 Silvar 48
Specification:Â Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/TubeÂ
products description 4J29 barÂ
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
Specifications
Physical Properties
Mechanical Properties
Coefficient of Expansion
Size Range:Â
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
| 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. |
| Grade | UNS | Werkstoff Nr. | ASTM | |
| Kovar | K94610 | 1.3981 | F15 | Â |
| Grade | Density | Melting Point |
| Kovar | 8.17 g/cm3 | 1449°C |
| 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 |
| Alloy | Linear Coefficient of Thermal Expansion Ä,10-6/ºC | |||||||
| 20-200ºC | 20-300ºC | 20-400ºC | 20-450ºC | 20-500ºC | 20-600ºC | 20-700ºC | 20-800ºC | |
| Kovar | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
Size Range:Â
*Sheet---Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealedÂ
*Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealedÂ
*Flat Wire---Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealedÂ
*Bar---Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealedÂ
Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealedÂ
Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treatedÂ
*Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealedÂ
*Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed
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