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Carbide wire drawing dies
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Carbide wire drawing dies

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Grade Recommendation and classification as per the inner size

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Domestic Grade Chemical composition Mechanical Prioerties
Hardness Bending Strength Compression Strength Density
WC Co+Rare Metal HRA N/㎜2 N/㎜2 g/cm3
YG6X 94 6 91 1560 5460 14.8-15.1
YG6A 93 7 91.5 1680 5400 14.9-15.2
YG6 94 6 89.5 1670 5200 14.7-15.1
YG8M 93 7 89.5 1720 4900 14.7-14.8
YG8 92 8 89 1840 4800 14.6-14.9

 

 

Inner sizmm

Size of cabidmm

Recommendation steel sizemm

Tolerance (mm)

0.15--0.5

9*6

25*12

-0.01/0

0.5--2.6

13*10

30*16

-0.01/0

0.8--3.5

16*13

32*23

-0.01/0

1.0--3.5

16*14

32*23

-0.01/0

1.5--6.5

20*17

40*25

-0.01/0

1.8--6.5

22*18

40*26

-0.02/0

3.0--9.5

25*20

50*28

-0.02/0

5.5--12.5

30*22

70*35

-0.02/0

8.5--16.5

35*25

75*35

-0.02/0

12.5--16.5

38*25

80*35

-0.02/0

16.5--21.5

40*25

85*35

-0.02/0

21.5--24.5

50*28

110*45

-0.03/0

24.5--34.5

60*35

120*50

-0.03/0

34.5--43.5

70*35

130*60

-0.035/0

43.5--45.5

80*35

140*60

-0.035/0

45.5--51.00

90*35

150*60

-0.05/0

51.00--56.00

100*40

160*75

-0.05/0

57.00---65.00

110*40

170*75

-0.05/0

66.00--69.00

120*45

180*80

-0.05/0

70.00-76.00

130*50

190*85

-0.05/0

 

 

High hardness and good wear resistance: Hardness at room temperature can reach HRA78-89, good red hardness under high temperature, 600℃ over high-speed steel, 1000℃ over the room temperature of carbon steel.

High mechanical strength: The compressive strength of up to 6000MN/㎡, 900℃,the bending strength can still above 6000MN/㎡. 

High modulus of elasticity: Good rigidity at room temperature, no significant plastic deformation. Young’s modulus is 2-3 times than steel.

Corrosion resistance and good oxidation resistance: acid, alkali, at 6 00—800℃ without significant oxidation.

The linear expansion coefficient is small: in the range of 20 to 400℃ for steel 0.35-0.65 . 

Conductivity: similar with iron and ferroalloy.

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