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Tungsten Black Wire

Type & Application

Type Application

STW91 For making filament, shock-resistance filament and other high-temperature-resistance devices, ect.

STW71 For making auto lamp filament and other anti-shock devices.

STW61 For making coiled-coil filament, ect.

STW31 For making coiled-coil or trispiral CFL filament, incandescent filament and support, ect.

STW41 For making stranded tungsten wire, tungsten heater element, ect.

STW42 For making stranded tungsten wire, tungsten heater element and other no special temperature required devices, ect.

STW11 For making electrode and lead, ect.

Chemical Composition (%)

W

Fe

Mo

Others

≥99.95

≤0.0020

≤0.0030

≤0.0010

Note: "K" is not regarded as impurity.
Product Feature

All wires showed here are doped tungsten wires and manufactured by the high tech of doping, acid washing, isostatic pressing, PLC controlled direct-sintering, swaging and auto feeding. The products are featured with minimumde formation at hight emperatures, high recrystalliztion temperatures, uniformity in dimension and excellent coilability. For tungsten rod weighing 3kg/pc, its rough welding tungsten wire weighing 5kg/pc. Customers are allowed to choose various types of tungsten wire in accordance with their specific applications.

Diameter Tolerance

Dia. µ

Weight

mg/200mm

Tolerance

Weight

Dia.

0 level

Ⅰlevel

Ⅱ level

Ⅰlevel

Ⅱ level

10<d≤18

0.3~0.98

----

± 3

± 4
---- ----

18<d≤40 > 0.98~4.85
± 2
± 2.5 ± 3 ---- ----

40<d≤80 > 4.85~19.39 ± 1.5 ± 2.0 ± 2.5 ---- ----

80<d≤300 > 19.39~272.71 ± 1.0 ± 1.5 ± 2.0 ---- ----

300<d≤350 > 272.71~371.19 ---- ± 1.0 ± 1.5 ----
----

350<d≤500
----
---- ± 1.5 ± 2.0

500<d≤1800
----
---- ± 1.0 ± 1.5

Note: The diameter range shall be determined by the customers.

Chemical analysis report of one of our W doped wire

Customer ---

Commodity Tungsten Wire

Date May, 14, 1999

Brand ---

Lot No. X735

Application ---

Specification Ø 0.63mm ×3 ± 2%

Quantity 2.70 Kg

Appearance OK

Greed Testing for Ø 1.25mm ---

Sag Value for Ø 0.4mm ---

Tensile Strength ---

elongation ---

Other ---

Mo K Other Elements (ppm max)

Al As Bi Ca Cd Co Cr Cu Fe Mg Mn

≥ 99.95% 65ppm 12 10 1 10 1 5 1 1 13 5 5

Mo Na Ni P Pb S Sb Si Sn Ti V

20 3 5 5 1 5 2 10 1 5 5

Standard Tungsten Wire

Specification

Type

Tolerance

mg or %

Dia.(mm)

Weight
Mg/200m

Black

Cleaned

CLR. not anneal

0.0150

0.68

nsv

-
-
0.66-0.70

0.0195

1.15

asv
- -
1.12-1.18

0.0240

1.74

ndg

-

-

1.70-1.78

0.0315

3.01

ndg

-

-

2.94-3.08

0.0335

3.40

nsg

-

-

3.32-3.49

0.0350

3.71

-

asv

-

3.62-3.80

0.0365

4.04

ndg

-

-

3.94-4.14

0.0420

5.34

-

asv

-

5.23-5.45

0.0460

6.41

-

asg

-

6.28-6.54

0.0447

6.05

ndg

-

-

5.93-6.17

0.0575

10.02

ndg

-

-

9.82-10.22

0.0655

13.05

-

adg

-

12.79-13.31

0.0690

14.43

-

adg

-

14.14-14.72

0.1030

32.40

-

asg

-

31.80-33.00

0.1620

9.52

-

asge

-

78.33-80.71

0.1730

89.65

-

ashe

-

88.80-90.50

0.1860

106.10

-

ashe

-

104.00-108.20

0,1900

109.39

fd

-

-

107.75-111.03

0.1970

117.20

-

ashe

-

114.90-119.50

0.0550

4.08

-

-

-

+/- 1.5%

0.059

5.68

-

-

-

+/- 1.5%

0.068

7.55

-

-

-

+/- 1.5%

0.080

10.45

-

-

-

+/- 1.5%

0.083

11.25

-

-

-

+/- 1.5%

0.120

23.51

-

-

-

+/- 1.5%

0.130

27.59

-

-

-

+/- 1.5%

0.220 65.31
-

-

-
+/- 1.5%

0.210
72.01
-

-

-
+/- 1.5%

0.220
79.03
-

-

-
+/- 1.5%

0.260
110.38
-

-

-
+/- 1.5%

0.310
156.91
-

-

-
+/- 1.5%

0.380 231.20 - - - +/- 1.5%

This type is our standard products, if you are interested in it or you have any question, please let us know the details of your requirements and this type number. Or please fill in the form given in our Terms & Conditions.

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Type	Application
STW91	For making filament, shock-resistance filament and other high-temperature-resistance devices, ect.
STW71	For making auto lamp filament and other anti-shock devices.
STW61	For making coiled-coil filament, ect.
STW31	For making coiled-coil or trispiral CFL filament, incandescent filament and support, ect.
STW41	For making stranded tungsten wire, tungsten heater element, ect.
STW42	For making stranded tungsten wire, tungsten heater element and other no special temperature required devices, ect.
STW11	For making electrode and lead, ect.

Dia. µ	Weight mg/200mm	Tolerance
		Weight			Dia.
		0 level	Ⅰlevel	Ⅱ level	Ⅰlevel	Ⅱ level
10<d≤18	0.3~0.98	----	± 3	± 4	----	----
18<d≤40	> 0.98~4.85	± 2	± 2.5	± 3	----	----
40<d≤80	> 4.85~19.39	± 1.5	± 2.0	± 2.5	----	----
80<d≤300	> 19.39~272.71	± 1.0	± 1.5	± 2.0	----	----
300<d≤350	> 272.71~371.19	----	± 1.0	± 1.5	----	----
350<d≤500	----	----			± 1.5	± 2.0
500<d≤1800	----	----			± 1.0	± 1.5

Customer	---
Commodity	Tungsten Wire
Date	May, 14, 1999
Brand	---
Lot No.	X735
Application	---
Specification	Ø 0.63mm ×3 ± 2%
Quantity	2.70 Kg
Appearance	OK
Greed Testing for Ø 1.25mm	---
Sag Value for Ø 0.4mm	---
Tensile Strength	---
elongation	---
Other	---

Mo	K	Other Elements (ppm max)
Mo	K	Al	As	Bi	Ca	Cd	Co	Cr	Cu	Fe	Mg	Mn
≥ 99.95%	65ppm	12	10	1	10	1	5	1	1	13	5	5
		Mo	Na	Ni	P	Pb	S	Sb	Si	Sn	Ti	V
		20	3	5	5	1	5	2	10	1	5	5

Specification		Type			Tolerance mg or %
Dia.(mm)	Weight Mg/200m	Black	Cleaned	CLR. not anneal	Tolerance mg or %
0.0150	0.68	nsv	-	-	0.66-0.70
0.0195	1.15	asv	-	-	1.12-1.18
0.0240	1.74	ndg	-	-	1.70-1.78
0.0315	3.01	ndg	-	-	2.94-3.08
0.0335	3.40	nsg	-	-	3.32-3.49
0.0350	3.71	-	asv	-	3.62-3.80
0.0365	4.04	ndg	-	-	3.94-4.14
0.0420	5.34	-	asv	-	5.23-5.45
0.0460	6.41	-	asg	-	6.28-6.54
0.0447	6.05	ndg	-	-	5.93-6.17
0.0575	10.02	ndg	-	-	9.82-10.22
0.0655	13.05	-	adg	-	12.79-13.31
0.0690	14.43	-	adg	-	14.14-14.72
0.1030	32.40	-	asg	-	31.80-33.00
0.1620	9.52	-	asge	-	78.33-80.71
0.1730	89.65	-	ashe	-	88.80-90.50
0.1860	106.10	-	ashe	-	104.00-108.20
0,1900	109.39	fd	-	-	107.75-111.03
0.1970	117.20	-	ashe	-	114.90-119.50
0.0550	4.08	-	-	-	+/- 1.5%
0.059	5.68	-	-	-	+/- 1.5%
0.068	7.55	-	-	-	+/- 1.5%
0.080	10.45	-	-	-	+/- 1.5%
0.083	11.25	-	-	-	+/- 1.5%
0.120	23.51	-	-	-	+/- 1.5%
0.130	27.59	-	-	-	+/- 1.5%
0.220	65.31	-	-	-	+/- 1.5%
0.210	72.01	-	-	-	+/- 1.5%
0.220	79.03	-	-	-	+/- 1.5%
0.260	110.38	-	-	-	+/- 1.5%
0.310	156.91	-	-	-	+/- 1.5%
0.380	231.20	-	-	-	+/- 1.5%