Description

4J*3、4J*4（YB/T********3）
*Ceramvar alloy, ASTM F***6, (Fe-Ni**-Co*5), Chinese 4J*3/4J*4

Introduction
4J*3/4J*4 alloy is a kind of iron-nickel alloy, also known as expansion alloy, it is one kind of material with special expansion performance and other properties. According to its main chemical we can separate into "Fe-Ni，Fe-Ni-CO，Fe-Cr and Fe-Ni-Cr".  According to its chemical and the different coefficients of expansion, The products are widely used in electric vacuum industry included ranges of glass, ceramics, mica and other\'s material matching sealing. It is indispensable for manufacture high power transmitting tubes, switch tubes, magnetrons, kinescope, integrated electric road, tube, a sealing plug, sealed relay and indispensable transistors sealing structure materials for UHF satellite and television broadcasting.

Specification: 
Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube 

Size Range: 
*Sheet**-thickness 0.*5mm~3.5mm, width:≤350mm,Condition: cold rolled, bright, bright annealed 
*Plate**-thickness 3.5mm~*0.0mm,width:≤**0mm,Condition: cold rolled, hot rolled, annealed 
*Round Wire**-Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed 
*Flat Wire**-Dia 0.5mm~Dia 5.0mm,length:≤***0mm,Condition:flat rolled, bright annealed 
*Bar**-Dia 5.0mm~Dia 8.0mm,length:≤***0mm,Condition:cold drawn,bright, bright annealed 
       Dia 8.0mm~Dia *2.0mm,length:≤***0mm,Condition:hot rolled,bright, bright annealed 
       Dia *2.0mm~Dia **0.0mm,length:≤***0mm,Condition:hot forging,peeled, turned, hot treated 
Capillary**-OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2**0mm,Condition: cold drawn, bright, bright annealed 
Pipe**-OD **0mm~8.0mm,ID 8.0mm~*29mm,length:≤4**0mm,Condition: cold drawn, bright, bright annealed
Note: we could do any other products with specified technical standard, say, ASTM,SAE,DIN,S.E.W.,JIS,ISO,IEC,NF,BS,ΓОСТ.PLS contact us for more information