Home > Low Expansion Alloys >

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry

Product Categories

Ohmalloy Material Co.,Ltd

Trust Seal

Verified Supplier

Credit Check

Supplier Assessment

Contact Now

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry

Name: 4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
Brand: OHMALLOY
Price: 1 USD

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry Manufactures

Brand Name : OHMALLOY

Model Number : 4J50

Certification : ISO，SGS

Place of Origin : China(Shanghai)

MOQ : 20kg

Price : negotiable

Supply Ability : 5000kg/month

Delivery Time : 7-20 Days after your deposit recieved

Packaging Details : In Wooden Box

Contact Now

OhmAlloy-4J33 (Expansion alloy)

(Common Name: 33НК, 4J33, KV-4, Ni33Co17)

4J33 alloy has a close Linear expansion coefficient with 95% Al2O3 ceramic in the range of -60 to 600 degrees Celsius. it is an Important sealing structural material in the electric vacuum industry; Mainly used for matching and ceramic sealing.

Normal composition%

Ni	32.0~33.6	Fe	Bal.	Co	14.0~15.2	Si	≤0.3
Mo	-	Cu	-	Cr	-	Mn	≤0.5
C	≤0.05	P	≤0.02	S	≤0.02

Typical Physical properties

Density (g/cm3)	8.27
Electrical resistivity at 20℃(Ωmm²/m)	0.46
Thermal conductivity, λ/ W/(m*℃)	17.6
Curie point T_c/ ℃	440
Elastic Modulus, E/ Gpa	139

Coefficient of expansion

θ/℃	α₁/10^-6℃^-1	θ/℃	α₁/10^-6℃^-1
20~300	6.3	20~400	6.1
20~500	6.9	20~600	8.3

Typical Mechanical properties

Tensile Strength	Elongation
Mpa	%
539	32

The heat treatment process
Stress relief annealing	Heating to 470~540℃. Keep 1~2h, cooling in the air
Annealing	Heating to 750~ 900℃ In the medium vacuum
Holding time, h	15min. ~ 1 hour
cooling	In the air

Style of suppDly

Alloys Name	Type	Dimension
OhmAlloy-4J33	Wire	D= 0.1~8 mm
OhmAlloy-4J33	Strip	W= 5~250 mm	T= 0.1 mm
OhmAlloy-4J33	Foil	W= 10~100 mm	T= 0.01~0.1 mm
OhmAlloy-4J33	Bar	Dia= 8~100 mm	L= 50~1000 mm

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry

Product Tags:

invar alloy

kovar alloy

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry Images

Inquiry Cart 0

Send your message to this supplier


*From:	Your email address is incorrect!
*To:	Ohmalloy Material Co.,Ltd
*Subject:	Subject is empty!
*Message:	For the best results, we recommend including the following details: -Self introduction -Required specifications -Inquire about price/MOQ Characters Remaining: (0/3000) Please enter 20 to 3000 characters to contact this supplier!