Khoom Description

Kovar Alloy, tseem hu ua ASTM F15, NILO® K, Pernifer® 2918, Rodar® thiab Dilver® P1 yog cov tswj kev nthuav dav hlau. Nws yog Nickel Iron alloy nrog 29% Nickel, 17% Cobalt thiab qhov seem tshuav yog Hlau. Cov yam ntxwv nthuav dav ntawm Kovar phim ob qho tib si borosilicate (Pyrex) iav thiab alumina ceramics, ua rau nws yog ib qho ntawm cov neeg nyiam tshaj plaws ntawm kev tswj kev nthuav dav hlau rau kev siv hermetic sealing. Kovar yog tsim los xyuas kom meej cov khoom zoo rau machining thiab sib sib zog nqus nqus, thiab yog cov khoom tsis muaj porosity. Koj yuav pom Kovar siv hauv cov raj fais fab, microwave tubes, transistors, diodes, hybrid tej pob khoom, thiab lwm yam cuab yeej tshawb fawb.

Kovar alloy yog lub tshuab nqus tsev melted, hlau-nickel-cobalt, tsis tshua muaj expansion alloy uas nws cov tshuaj muaj pes tsawg leeg yog tswj nyob rau hauv nqaim txwv kom paub meej meej uniform thermal expansion zog. Kev tswj kom zoo yog ua haujlwm nyob rau hauv kev tsim cov hlau no los xyuas kom meej lub cev thiab cov cuab yeej cuab tam kom yooj yim hauv kev sib sib zog nqus nqus, stamping thiab machining.

Daim ntawv thov

Kovar alloy tau siv los ua hermetic ntsaws ruaj ruaj nrog lub zog Pyrex tsom iav thiab cov ntaub ntawv ceramic.

Cov hlau no tau pom dav siv hauv cov raj fais fab, microwave tubes, transistors thiab diodes. Hauv kev sib xyaw ua ke, nws tau siv rau lub pob tiaj tiaj thiab pob khoom dual-hauv-kab.

Tshuaj compostion

Element	Min	Max
Cov pa roj carbon	--	0.02
Nickel	--	29.0
Hlau	Tshuav
Silicon	--	0.20
Manganese	--	0.30
Cobalt	--	17.0

Specification

Khoom npe: 4j29 kovar raj Qib: Nickel Base Alloy Ni (Min): 28.5% Loj: Customized Size Density: 8.36 g/cm³ Melting Point: 1449 degree Linear expansion coefficient: 4.6 x 10^(-6) / degree (20-200 degree ) Tensile Strength: yam tsawg 485 MPa Yield Strength: yam tsawg 275 MPa Elongation: yam tsawg 20%

Lub ntsiab lus coefficient ntawm thermal expansion li annealed

Kub		Coefficient
77 degree F rau	25 degree rau	10(-6)/ degree F	10(-6)/ degree
212 392 572 662 752 842 932 1112 1292 1472 1652	100 200 300 350 400 450 500 600 700 800 900	3.25 2.89 2.85 2.72 2.81 2.92 3.41 4.34 5.06 5.73 6.25	5.86 5.20 5.13 4.89 5.06 5.25 6.15 7.80 9.12 10.31 11.26

Peb kuj muab lwm yam alloys nrog ntau hom thiab tus qauv, txais tos koj nug txhua lub sijhawm rau Yitech.

Hom alloy	Lub npe lag luam	UNS No.	Specifications	Daim Ntawv Thov Kev Pab
Hom alloy	Lub npe lag luam	UNS No.	Specifications	Qws	Sawb	Hlau	Daim ntawv
Ni29Co17	Cov	K94610	ASTM F15	√	√	√	√
FeNi36	Ib 36	K93603	ASTM 1684, UAS 1684	√	√		√
FeNi32Co5	Super Invar 32-5	ib 93500	TIAB SA 1684	√	√		√
FeNi27Co25	Ceramvar	F1466	TIAB SA 1466	√	√	√	√
FeNi42	alloy 42	K94100	ASTM F30	√	√		√
FeNi46	alloy 46	K94600	ASTM F30	√	√		√
FeNi48	Alloy 48	K94800	ASTM 30	√	√		√
FeNi50	alloy 52	K95050	ASTM F30