Nilo42 Feni Constant Expansion Glass Sealed Alloy Plate 4j42

• Classification: Low Expansion Alloy
• Density: 8.12g/cm3
• Resisivity: 0.61
• Curie Point: 360
• State: Soft
• Brand: 4j42
• Model NO.: Nilo42
• OEM: Yes
• Stock: Seyn
• Sample: Free
• Surface: Bright
• Elongation a (%): 23
• Tensile RM (MPa): 934
• Reduction in Cross Section on Fracture Z: 14
• Impact Kv/Ku: 22
• Application: Boiler Plate
• Size: 0.01-3mm*0.3-600mm
• Transport Package: Export Packing
• Specification: Can discuss
• Trademark: HUONA
• Origin: Shanghai
• HS Code: 750522000
• Production Capacity: 50 Ton/Month

Product Description

Nilo42 FeNi Constant Expansion Glass Sealed alloy plate 4j42
(Common Name: 42H Glass Sealing 42, Nilo42, N42, FeNi42)

4J42 alloy is mainly composed of iron, nickel elements. It is characterized with a fixed coefficient of expansion.Increase the thermal expansion coefficient and the Curie point with increase of nickel content.
4J42 alloy is widely used the structure of the sealing material in the electric vacuum industry.
 
Normal composition%

Ni	41.5~42.5	Fe	Bal.	Co	-	Si	≤0.3
Mo	-	Cu	-	Cr	-	Mn	≤0.8
C	≤0.05	P	≤0.02	S	≤0.02	Al	≤0.1

 
Typical Physical properties

Density (g/cm3)	8.12
Electrical resistivity at 20ºC(Om*mm2/m)	0.61
Thermal conductivity, λ/ W/(m*ºC)	14.6
Curie point   Tc/ ºC	360
Elastic Modulus,  E/ Gpa	147

 
Coefficient of expansion

θ/ºC	α1/10-6ºC-1	θ/ºC	α1/10-6ºC-1
20~100	5.6	20~400	5.9
20~200	4.9	20~450	6.9
20~300	4.8	20~500	7.8
20~350	4.95	20~600	9.2

 
Typical Mechanical properties

Tensile Strength	Elongation
Mpa	%
490	35

 

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

Alloys Name	Type	Dimension
OhmAlloy-4J42	Wire	D= 0.1~8mm
OhmAlloy-4J42	Strip	W= 5~250mm	T= 0.1mm
OhmAlloy-4J42	Foil	W= 10~100mm	T= 0.01~0.1mm
OhmAlloy-4J42	Bar	Dia= 8~100mm	L= 50~1000

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 we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.

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.