1J50 HiperCo50A Round Bar Permalloy Soft Magnetic Precision Alloy
Λεπτομέρειες:
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Τόπος καταγωγής: | Κίνα |
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Μάρκα: | JX |
Πιστοποίηση: | ISO |
Αριθμό μοντέλου: | Αξιόπιστη και ποιοτική χάραξη φύλλου διαστολής Kovar |
Πληρωμής & Αποστολής Όροι:
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Ποσότητα παραγγελίας min: | 100 κιλά |
Τιμή: | Negotiable |
Συσκευασία λεπτομέρειες: | Τυποποιημένη ξύλινη θήκη |
Χρόνος παράδοσης: | 35 ημέρες |
Όροι πληρωμής: | L/C, T/T |
Δυνατότητα προσφοράς: | 3000Τ |
Λεπτομερής ενημέρωση |
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Product Type: | Reliable Quality Kovar Expansion Alloy Sheet Engrave | Material: | Feni Alloy |
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Carbon Content: | low | Transport Package: | wooden case |
Shape: | round bar | Condition: | soft |
Surface: | Bright | Origin: | China |
Υψηλό φως: | Kovar Expansion Alloy Sheet,Engrave Feni Alloy Sheet,1/4 Hard Feni Alloy Sheet |
Περιγραφή προϊόντων
Kovar Sheet not only has thermal expansion similar to glass, but its nonlinear thermal expansion curve can often be made to match a glass, thus allowing the joint to tolerate a wide temperature range. Chemically, it bonds to glass via the intermediate oxide layer of nickel oxide and cobalt oxide; the proportion of iron oxide is low due to its reduction with cobalt. The bond strength is highly dependent on the oxide layer thickness and character. The presence of cobalt makes the oxide layer easier to melt and dissolve in the molten glass. A grey, grey-blue or grey-brown color indicates a good seal. A metallic color indicates lack of oxide, while black color indicates overly oxidized metal, in both cases leading to a weak joint.
Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.
Kovar Sheet Normal composition%
Ni | 28.5~29.5 | Fe | Bal. | Co | 16.8~17.8 | Si | ≤0.3 |
Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Code of condition | Condition | Wire | Strip |
R | Soft | ≤585 | ≤570 |
1/4I | 1/4 Hard | 585~725 | 520~630 |
1/2I | 1/2 Hard | 655~795 | 590~700 |
3/4I | 3/4 Hard | 725~860 | 600~770 |
I | Hard | ≥850 | ≥700 |
Density (g/cm3) | 8.2 |
Electrical resistivity at 20ºC(Om*mm2/m) | 0.48 |
Temperature factor of resistivity(20ºC~100ºC)X10-5/ºC | 3.7~3.9 |
Curie point Tc/ ºC | 430 |
Elastic Modulus, E/ Gpa | 138 |
Kovar Expansion Alloy Sheet Picture:
Coefficient of expansion
θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
20~60 | 7.8 | 20~500 | 6.2 |
20~100 | 6.4 | 20~550 | 7.1 |
20~200 | 5.9 | 20~600 | 7.8 |
20~300 | 5.3 | 20~700 | 9.2 |
20~400 | 5.1 | 20~800 | 10.2 |
20~450 | 5.3 | 20~900 | 11.4 |
θ/ºC | 100 | 200 | 300 | 400 | 500 |
λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
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