4J40

• 

• Material:	4J40
  Other Brands:	4J40
  Source Stock:	Customized
  Supplier:	Shanghai Hite Special Alloy Co., Ltd.
  Contacts:	Mr.KayDuan
  Email:	sales02@hitealloy.com

• 4J40 Details

  
  
  

  4J40 alloy, also known as iron nickel alloy or lubrication alloy, is a high-performance alloy material. It is composed of elements such as iron, nickel, cobalt, copper, and chromium, and has excellent thermal expansion performance. It is widely used in industries, aerospace, military, and other fields.

  
  

  Characteristic:

  4J40 alloy has the characteristics of relatively small thermal expansion coefficient, good wear resistance, good corrosion resistance, and good weathering resistance. Its characteristics enable it to maintain long-term stability under conditions such as high temperature, high pressure, high speed, and strong corrosiveness. In addition, 4J40 alloy also has high strength and fatigue resistance, can withstand extreme pressure and stress, and is not prone to fracture and deformation.

  
  

  Heat treatment:

  During the heat treatment process of 4J40 alloy, factors such as temperature, time, and cooling need to be controlled. In general, annealing treatment is required before processing to eliminate internal stress and improve the toughness and plasticity of the alloy. After heat treatment, mechanical processing is also required to obtain alloy materials with excellent mechanical properties and wear resistance.

  
  

  Chemical composition under YB/T5241-2005 standard:

  Grade	chemical composition,%
  4J40	C	P	S	Si
  	≤0.05	≤0.02	≤0.02	≤0.15
  	Mn	Ni	Co	Fe
  	≤0.25	32.4~33.4	7.0~8.0	Remainder

  
  

  Typical average linear expansion coefficient value α,10-6/℃:

  Grade	20℃~50℃	20℃~100℃	20℃~200℃	20℃~300℃	20℃~400℃	20℃~500℃
  4J40	1.4	1.3	1.2	1.7	4.5	-

  
  

  Performance and purpose:

  4J40 alloy has good thermal conductivity, conductivity, and welding performance, and can be used in almost all environments, including high-temperature, high-pressure, and highly corrosive environments. It is widely used in fields such as aviation, aerospace, nuclear energy, chemical engineering, communication, etc., such as manufacturing high-performance equipment such as navigators, flight instruments, inertial navigation, etc. It also has high application value in manufacturing radio components, valves, pumps, etc.