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In Stock Fe-Ni-Co Constant-Expansion Sealing Kovar Alloy 4j29 Bar

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In Stock Fe-Ni-Co Constant-Expansion Sealing Kovar Alloy 4j29 Bar

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Brand Name :	Victory
Model Number :	Kovar 4J29
Price :	10 - 499 kilograms $35.00
Payment Terms :	L/C, T/T, Western Union, MoneyGram
Supply Ability :	300 tons per month
Delivery Time :	7-21 days
Certification :	CE,ROHS,ISO 9001

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In Stock Fe-Ni-Co Constant-Expansion Sealing Kovar Alloy 4j29 Bar

ASTM F15 precision alloy kovar material 4J29 round bar rod price per kg

Glass sealed and controlled expansion Kovar alloys
* kovar alloy, ASTM F15, Nilo-K, UNS K94610 (FeNi29Co17), Chinese 4J29
*Specifications:ASTM F15; DIN 17745; S.E.W. 385; Werkstoff Nr. 1.3981; AFNOR NF A54-301

Kovar Alloy, also know as ASTM F-15, NILO K, Pernifer 2918, Rodar, and Dilvar P1 is Nickel-Iron-Cobalt, controlled expansion alloy containing 29% Nickel.
It’s coefficient of expansion (which decreases with rising temperature to the inflection point), matches the expansion rate ofborosilicate glasses and aluminia ceramics.
Applications include glass to metal seals in applications requiring high reliability or resistance to thermal shock, ie.high~power transmitting valves, transistor leads and heaters and photography flash bulbs.

Alloy Type	Trade Name	UNS No.	Specifications	Forms Of Supply
Alloy Type	Trade Name	UNS No.	Specifications	Rod	Strip	Wire	Sheet
Ni29Co17	Kovar	K94610	ASTM F15	√	√	√	√
FeNi36	Invar 36	K93603	ASTM 1684	√	√		√
FeNi32Co5	Super Invar 32-5	KI93500	ASTMF1684	√	√		√
FeNi27Co25	Ceramvar	F1466	ASTMF1466	√	√	√	√
FeNi42	Alloy 42	K94100	ASTM F30	√	√		√
FeNi46	Alloy 46	K94600	ASTM F30	√	√		√
FeNi48	Alloy 48	K94800	ASTMF30	√	√		√
FeNi50	Alloy 52	K95050	ASTM F30	√	√	√	√

Item	1J33	3J01	3J9	4J29	4J32	4J33	4J45	FeNi50	Invar36
C	≤0.05	≤0.05	0.22-0.26	≤0.03	≤0.05	≤0.03	≤0.05	≤0.05	≤0.1
Mn	≤0.05	≤1.00	1.80-2.20	≤0.5	0.2-0.6	≤0.5	≤0.8	≤0.8	≤0.5
Fe	Rest
P	≤0.020	≤0.020	≤0.03	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02	≤0.006
S	≤0.020	≤0.020	≤0.020	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02	≤0.04
Si	0.30-0.6	≤0.80	1.30-1.70	≤0.3	≤0.2	≤0.3	≤0.3	≤0.3	≤0.35
Ni	32.8-33.8	34.5-36.5	9.0-10.5	28.5-29.5	31.5-33	28.5-29.5	44.5-45.5	49.5-50.5	35-38
Al	1.0-2.0	1.00-1.80	--	--	--	--	≤0.1	≤0.1	--
Co	--	--	--	16.8-17.8	3.2-4.2	16.8-17.8	-	-	-
Ti	-	2.70-3.20	-	-	-	-	-	-	-
Cu	-	--	--	--	≤0.2	0.4-0.8	≤0.2	--	--
Cr	--	11.5-13.0	19.0-20.5	≤0.2	--	≤0.2	--	--	--
Mo	--	--	1.60-1.85	≤0.2	--	≤0.2	--	--	--

In Stock Fe-Ni-Co Constant-Expansion Sealing Kovar Alloy 4j29 Bar

Kovar (also known as KV-1 or ASTM F15) is a nickel-iron alloy that finds wide applications in the field of electronics due to its thermal expansion coefficient that matches that of borosilicate glass. Here are some of the application areas of Kovar:

1. Electronic device packaging: Kovar is widely used in the packaging of semiconductor devices, integrated circuits, and other electronic components to provide stable packaging and protect electronic components from environmental influences.
2. Optoelectronics: Kovar finds widespread application in lasers, photodetectors, and other optical components due to its excellent thermal expansion coefficient and stability.
3. Aerospace: Kovar is widely used in guidance systems, navigation systems, and other devices in the aerospace field due to its high strength, corrosion resistance, and high-temperature resistance.
In summary, Kovar finds wide applications in the packaging of electronic components or protection of optoelectronic components due to its thermal expansion coefficient that matches that of borosilicate glass.

In Stock Fe-Ni-Co Constant-Expansion Sealing Kovar Alloy 4j29 Bar

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