$12-45 /Kilogram
| Payment Type: | L/C,T/T,D/P,D/A,Paypal |
| Incoterm: | FOB,CFR,CIF,EXW |
| Min. Order: | 30 Kilogram |
| Transportation: | Ocean,Land,Air |
| Port: | any port in China |
Place Of Origin: China
Powder Or Not: Not Powder
Grade: Kovar Alloy Sheet
Shape: Sheet
Application: Glass Sealing,Electric Vacuum Components Etc
Chemical Composition: Ni,Cr,Fe,Co,Cu,C,Mn,Si,P,S,Mo
Standard: Aisi,Astm,Sus,Jis,Gb
| Selling Units | : | Kilogram |
| Package Type | : | All our products are packed, stored, transported according to the international regulation.Or as customer's requirement provide special packing. |
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4J29 Kovar alloy sheet is a iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties.
4J29 Kovar alloy sheet has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.
Specification
| GB/T | ASTM | UNS | W.Nr |
| 4J29 | F15 | K94610 | 1.3981 |
Chemical composition
| Grade | % | Ni | Cr | Fe | Co | Cu | C | Mn | Si | P | S | Mo |
| Kovar | Min | 28.5 |
| Bal. | 16.8 |
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| Max | 29.5 | 0.2 | 17.8 | 0.20 | 0.03 | 0.50 | 0.30 | 0.02 | 0.02 | 0.20 |
Coefficient of linear expansion
| Grade | a/10-6·K-1 a/10-6·K-1 | ||
| Kovar | 200-300°C | 20-400°C | 20-450°C |
| / | 4.6-5.2 | 5.1-5.5 | |
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