Feni Expansion Alloy 4j50, Vacovit 500, Nilo51, Ns-1

• Product Type: Wire
• Material: Fenico
• Carbon Content: Low Carbon
• PCD: 98mm
• ET: 0
• Hole: 0
• Model NO.: 4J50
• Status: Annealling Bright
• Type: Strip,Sheet
• Density: 8.21g/cm3
• Resistivity: 0.44ohmmm2/M
• Common Name: Kovar, Nilo K, Kv-1, Dilver Po, Vacon 12
• Curie Point: 500
• Elastic Modulus: 158
• Transport Package: Wooden Case
• Specification: >10mm
• Trademark: UALLOY
• Origin: Hangzhou
• HS Code: 7226999001
• Production Capacity: 5000tons/Year

Product Description

FeNi Expansion Alloy 4J50,Vacovit 500,Nilo51,Ns-1

4J50 the other common Name: 50H, N50, Vacovit 500, FeNi50, Nilo51, Ns-1

4J50 is mainly composed of iron, nickel elements. It is characterized with a fixed coefficient of expansion.
 

FeNi Glass Sealing Alloys
Grade	4J42,4J45,4J50,4J52,4J54
Size	Strip:(0.03-0.1)mm*(180-250)mm (0.1-1.0)mm*(10-250)mm (1.0-3.0)mm*(100-250)mm Wire:0.1-6.0mm Bar:20-100mm(Hot forging)        2.0-20mm(Cold drawing)
Features	It has a certain linear expansion coefficient in a certain temperature rang
Application	Used as soft glass or ceraimc sealing material in the electric vacuum industry.

Normal composition%

Grade	C	P	S	Mn	Si	Al	Ni	Co	Fe
4J42	≤0.05	≤0.02	≤0.02	≤0.8	≤0.3	≤0.1	41.5-42.5	≤1.0	Bal.
4J45	≤0.05	≤0.02	≤0.02	≤0.8	≤0.3	≤0.1	44.5-45.5	/	Bal.
4J50	≤0.05	≤0.02	≤0.02	≤0.8	≤0.3	≤0.1	49.5-50.5	/	Bal.
4J52	≤0.05	≤0.02	≤0.02	≤0.6	≤0.3	/	51.5-52.5	/	Bal.
4J54	≤0.05	≤0.02	≤0.02	≤0.6	≤0.3	/	53.5-54.5	/	Bal.

4J50 Typical Physical properties

Density (g/cm3)	8.21
Electrical resistivity at 20ºC(ohm.mm^2/m)	0.44
Thermal conductivity, λ/ W/(m*ºC)	16.7
Curie point   Tc/ ºC	500
Elastic Modulus,  E/ Gpa	158

4J50 Coefficient of expansion

θ/ºC	α1/10^-6ºC^-1	θ/ºC	α1/10^-6ºC^-1
20~100	9.8	20~400	9.4
20~200	9.8	20~450	9.4
20~300	9.5	20~500	9.7
20~350	9.4	20~600	10.6

 The heat treatment process

Annealing	Heated to 900 ±20ºC in a hydrogen atmosphere
Holding time, h	1 hour
cooling	With speed not more than 5 ºC / min. cooling to below 200 ºC

Style of supply

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FAQ

1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If the size is not in stoct, our MOQ will be about 30kgs.

2. How can you pay for small sample amount?
We have Western union account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.