4J33

• 

• Material:	4J33
  Other Brands:	4J33, 33HК, Ni33Co17, KV-4, Ni33Co17
  Source Stock:	Customized
  Supplier:	Shanghai Hite Special Alloy Co., Ltd.
  Contacts:	Mr.KayDuan
  Email:	sales02@hitealloy.com

• 4J33 Details

  
  
  

  The density of 4J33 precision alloy is 8.27g/cm3, and the material is a ceramic sealing alloy, belonging to the iron nickel cobalt constant expansion ceramic sealing alloy. 4J33 precision alloy and 4J34 precision alloy are ceramic sealing alloys developed based on the characteristics of ceramics in China. In the temperature range of -60 ℃ to 600 ℃, 4J33 precision alloy has a linear expansion coefficient similar to 95% AI2O3 ceramic. In use, the selected ceramic should match the expansion coefficient of the alloy.

  
  

  The heat treatment of 4J33 precision alloy can be divided into stress relief annealing, intermediate annealing, and melting using non vacuum induction furnaces, vacuum induction furnaces, or arc paths. The surface treatment of 4J33 precision alloy can be achieved by sandblasting, polishing, and pickling. This combination of fittings has good electroplating performance, and the surface can be plated with metals such as gold, silver, nickel, chromium, etc. The cutting characteristics of 4J33 precision alloy are similar to that of austenitic stainless steel. When machining, high-speed steel or hard alloy cutting tools are used, and low-speed cutting is used. Coolants can be used during cutting, which has good grinding performance.

  
  

  Chemical composition under YB/T5231-2005 standard:

  Grade 4J33	chemical composition,%
  	C	P	S	Mn	Si
  	≤0.05	≤0.02	≤0.02	≤0.5	≤0.3
  Cu	Cr	Mo	Ni	Co	Fe
  -	-	-	32.1~33.6	14~15.2	Remainder

  
  

  Tensile strength under YB/T5231-2005 standard:

  delivery condition	Tensile strength of strip ,N/mm2	Tensile strength of wire ,N/mm2
  Soft	＜570	＜585
  Hard	＞700	＞860

  
  

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

  Grade	20℃~100℃	20℃~200℃	20℃~300℃	20℃~400℃
  4J33	-	7.1	6.5	6.3
  20℃~450℃	20℃~500℃	20℃~600℃	20℃~700℃	20℃~800℃
  -	7.1	8.5	-	-

  
  

  4J32 precision alloy products include plates, strips, wires, pipes, and bars, and can also be customized according to requirements.