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Note: according to customers demand processing production

Electrical contacts with tungsten round piece of technical conditions


Chemical composition

W Fe Mo other
≥99.97%
≤0.01%
≤0.01%
≤0.01



Physical properties

 


Straight path(mm)
Hard degrees(kg/mm2)
Crystal digits(pee/mm2)
<3.0 >470 >12000
3.0-<4.0 >460 >10000
4.0-<5.0 >450 >8000
5.0-<7.0 >430 >6000
7.0-<9.0 >410 >6000

 

Surface quality state


roughnessA
B
striation
rounds
0.2um
5.0um
2.0um

 

precision

diameter
thickness
Parallel degree
Spherical radius
rounds
±0.05mm
±0.05mm
±0.02mm
按有關附圖

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