Vacovit 426 Glass Sealing Alloy Sheet

• Customization: Available
• Classification: Low Expansion Alloy
• Density: 8.15 g/cm3
• Model NO.: Vacovit 426
• Resisivity: 0.92
• Curie Point: 270
• State: Soft
• Brand: Vacovit 426
• Chemical Composition: Feni42cr6
• OEM: Yes
• Sample: Free
• Stock: Seyn
• Surface: Bright
• Transport Package: Export Packing
• Specification: Can discuss
• Trademark: HUONA
• Origin: Shanghai
• HS Code: 750522000
• Production Capacity: 50 Ton/Month

Product Description

Vacovit426 Fe-Ni-Cr Glass Sealing Alloy sheet

Vacovit426, 4 j47, 4 j49 at 20 ~ 400 degrees Celsius temperature range, with the expansion coefficient of similar soft glass, used for matching with corresponding soft glass sealing.This kind of alloy containing chromium, after oxidation treatment, the alloy surface generated very dense oxide film, combined with matrix and firm, and soft glass and invasive good.Therefore, to get the sealing side of high strength.Is an important sealing structure in electric vacuum industry material.

Chemical Composition in %, Invar

brand	Chemical composition
	Ni	Cr	Fe	C	P	Mn	B	Al	Si	S
				≤
Vacovit426	41.5~42.5	5.4~6.3	Bal	0.05	0.02	0.25	-	0.2	0.3	0.02
4j47	46.8~47.8	0.8~1.4	Bal	0.05	0.02	0.40	-	-	0.3	0.02
4j49	46.0~48.0	5.0~6.0	Bal	0.05	0.02	0.40	0.02	-	0.3	0.02

 
Basic physical constants and mechanical properties of the alloy:

brand	Density  g / cm3	resistivity	Curie point
Vacovit426	8.15	0.92	270
4j47	8.19	0.55	400
4j49	8.18	0.90	340

 

Typical expansion character(10 -6 / ºC )
Temperature range	20~100	20~200	20~300	20~400	20~500	20~400	20~550	20~600
Expansion coefficient	6.8	7.0	7.7	9.7	11.7	3.2	11.7	12.2

 

Varieties		Steel type      Specifications mm	Precision alloy	Resistance Alloys for electrical heating	Super alloy	Welding wire	Corrosion resistant alloy
Rods	hot rolling rods	Φ8~38mm	available		available		available
	Cold-drawn rods	≤50mm	available		available		available
	Forged rods	Φ38~350mm	available		available		available
Wires	Round wires	Φ0.3~8mm	available	available	available	available	available
	Non-circle wires	Negotiation	available		available		available
Strips	Cold rolling	0.15~4×200mm	available	available	available		available
	Hot rolling	4~22×200mm	available	available	available		available
Plates	Cold rolling	0.5~4×1000×2000mm	available		available		available
	Hot rolling	4~22×1000×2000mm	available		available		available
tubes		Φ4~63×0.5~5mm			available		available
Executive standard: GB, GJB, HB, YB, ASTM, AMSE, negotiation and so on.

 
Ni42Cr6 alloy is glass sealed alloy FeNiCr departments on behalf of the brand.The group alloy via air factory use for a long time, stable performance.Mainly used for making all kinds of electric vacuum components, such as electronic tube anode caps, etc.That should be chosen in the application of matching expansion coefficient of glass and metal.In order to improve the sealing strength of metal and glass allows alloy containing aluminum, cerium.When the heat treatment, grain size is too big, should be avoided to ensure the strip with good deep drawing extension performance and air tightness.