Nickel Alloy Invar Plate 4J36 Invar 36 Sheet

1 . Description:

4J36 alloy is also called INVAR alloy. The Curie point of the alloy is about 230℃. Below this temperature, the alloy is ferromagnetic and has a very low expansion coefficient. Above this temperature, the alloy is non-magnetic. , The expansion coefficient increases. The alloy is mainly used to manufacture components with approximately constant dimensions within the range of temperature changes, and is widely used in the radio industry, precision instruments, meters and other industries.

4J36 can be welded by oxyacetylene welding, arc welding, electric welding and hydrogen atom welding. Since the coefficient of expansion is related to the chemical composition of the alloy, the alloy composition should be avoided as much as possible due to welding. Therefore, it is best to use argon arc welding. The filler metal for welding should preferably contain 0.5% to 1.5% of titanium to reduce welding pores and crack.

2 . Heat treatment process

Stress relief annealing	Heat to 530~550℃, keep for 1~2 h. Cool in the furnace
annealing	Heating to 830~880℃ ,keep holding for 30 min. Furnace cooling
Stabilization	(1) Heat to 830 ℃ in a protective atmosphere, hold for 20min. ~ 1h, quench (2)Temper
Precautions	(1) The alloy cannot be hardened by heat treatment (2)Surface treatment can be sandblasted, polished and pickled

3 . Supply category

Type	Size
Wire	D= 0.1~8mm
Strip	W= 5~250mm	T= 0.1mm
Foil	W= 10~100mm	T= 0.01~0.1
Bar	Dia= 8~100mm	L= 50~1000

4 . 4J36 Chemical composition, %

Ni	35~37	Fe	Bal.	Co	-	Si	≤0.3
Mo	-	Cu	-	Cr	-	Mn	0.2~0.6
C	≤0.05	P	≤0.02	S	≤0.02

5 . 4J36 Coefficient of expansion

θ/℃	α1/10-6℃-1	θ/℃	α1/10-6℃-1
20~-60	1.8	20~250	3.6
20~-40	1.8	20~300	5.2
20~-20	1.6	20~350	6.5
20~-0	1.6	20~400	7.8
20~50	1.1	20~450	8.9
20~100	1.4	20~500	9.7
20~150	1.9	20~550	10.4
20~200	2.5	20~600	11.0

Bloom(Suzhou) Materials Co., Ltd ，which located in the beautiful city of Zhangjiagang , Suzhou,China. 
Bloom Company is a technology research and development enterprises which integrats technology research and development, production and trade.It mainly dealing two types of products based on the alloy materials. Spot welding accessories and twin extruder spare parts. 

With independent research and development team, Bloom focuses on technological innovation. It has provided super wear resistance, corrosion resistance, high temperature resistant core parts for many twin screw extruder users both at home and abroad and blending modification of enterprises. With continuous pursuit of technological innovation, we committed to providing customers with high quality products and services. In the global market, Our products are widely used in all fields such as plastics, miners, energy, aviation and etc. High-quality products can be developed according to customer needs combined with the actual working conditions. Whether it is high temperature, high corrosion conditions, or high torque, high strength mechanical needs, Bloom’s products can perform the task excellently. It can achieve excellent performance, stable quality, reasonable price, timely delivery, perfect after-sales.
We will advance with the times with the management idea of cooperation, win-win, integrity and open, to provide customers better products and more efficient service. Share a brilliant tomorrow with you!

Products Scope of Bloom Alloy

Nickel and iron base  Alloy(KCF alloy, Nickel alloy)

Spot Welding Accessories(Electrodes, Cap tips , Guide Pins and so on)
Twin Screw Extruder Spare Parts
Parallel Twin Screw Extruder Parts 
Conical Screw Extruder Parts

Other Precision Alloy Materials and Parts

Service  of Bloom

Alloy Material  Self Production

Non-Standard Product Reseach and Test

Precision Machinning

Spot Welding Parts offering

Twin Screw Extruder Spare Parts Supply

Logistics Service

After sales service

Advantages of Bloom 

Experienced Engineers in Alloy Businss
More then 20 years experience in alloy materials offering

High Quality Control System

Authorized Certificates

Guaranteed Delivery and Quality

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Bloom is engaged in offering special and high quality performance alloy and parts to the whole world, Choose Bloom, Choose a sucessful business partener!