4J36 Tube

4J36 is a low expansion alloy

4J36 is a special low-expansion iron-nickel alloy with an ultra-low expansion coefficient. The Curie point of the alloy is about 230°C, the alloy is ferromagnetic below 230°C, and non-magnetic above 230°C. This alloy is mainly used to manufacture components with close and constant dimensions within the temperature range, and is widely used Wireless point industry, precision instruments, meters, etc.

It has an extremely low coefficient of thermal expansion between -250°C and +200°C.

Has good plasticity and toughness.

 

Similar Grades

United States: UNS K93600, UNS K93601

France: Fe-Ni36

Germany: W.Nr.1.3912

 

Executive Standard

YB/T 5241

standard as required

 

Typical values(Weight %)

Ni	Fe	C	Si	Mn	P	S
		≤
35.0-37.0	Remain	0.05	0.30	0.60	0.015	0.01

 

Mechanical Properties (Annealed State)

Temperature ℃	Yield Strength R p0.2/MPa	Tensile Strength R m/ MPa	Elongationδ5 /%
-250	880	1000	40
0	310	520	40
300	95	410	50
600	95	210	70

 

Corrosion Resistance

Corrosion resistant in dry air at room temperature.

In other harsh environments, such as humid air, corrosion (rusting) may occur.

 

Application Field

● Production, storage and transportation of liquefied gas

● Measuring and control instruments whose operating temperature is below +200°C, such as thermostats

● Bushings for screw connectors between metal and other materials

● Bimetallic and temperature controlled bimetallic

● Tempering molds for CRP parts in the aviation industry

● Frames for electronic control units of satellites and missiles below -200°C

● Auxiliary electron tube in the electromagnetic lens of the laser control device

 

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