Wolframite Concentrate

Sodium Tungstate

Formula : Na₂WO₄.2H₂O
Specifications

Grade		WO₃ (% min)	Impurities (% max )					Wster Insoluble
Grade		WO₃ (% min)	Mo	As	Al	Fe	Si	Wster Insoluble
High-Pure Grade		69	0.02	0.01	0.025	0.005	0.04	0.01% max
Common	I	68	0.02	0.015		0.025	0.04
Common	II	68	0.05	0.015

Packing : In sealed plastic bags with outer iron drums of 100kg or 200kg net each. We can meet your special requirements.

Calcium Tungstate

Formula : CaWO₄
Specifications

Grade	WO₃(% min )	Impurities (% max )
Grade	WO₃(% min )	S	P	As	Mo	Cu	Sn	Si	Sb	Zn	Fe	Pb
Grade-1	77	0.2	0.02	0.02	0.02	0.02	0.01	0.2	0.03	0.02	0.05	0.02
Grade-2	75	0.25	0.03	0.04	0.04	0.03	0.02	0.5	0.05	0.03	0.07	0.03

Packing : In sealed plastic bags with outer iron drums of 100/200 kgs net each. We can meet your special requirements.

Tungstic Acid

Specifications

Grade	WO₃ (% min)	Impurities (% max)
Grade	WO₃ (% min)	Al	Co	Cu	Mg	Mn	Ti
	90.00	0.001	0.001	0.001	0.001	0.001	0.001

Impurities (% max)
Sb	Sn	V	S	P	K	Na	Si	Mo
0.001	0.001	0.001	0.005	0.005	0.005	0.006	0.006	0.02

Impurities (% max )				Apparent density(g/cm³)	lgniting loss(%)
As	Ni	Fe	Ca	Apparent density(g/cm³)	lgniting loss(%)
0.015	0.002	0.003	0.01	0.5~1.0	<10(9)

Packing : In sealed double plastic bags with outer iron druns of 50kgs net each.

Ammonium Paratungstate

Formula : 5(NH₄)₂O.12WO₃.5H₂O
Specifications (Based on WO₃)

Grade	WO3 (% min)	Impurities (% max )
Grade	WO3 (% min)	As	Fe	Ca	(K+Na)	Co	Mg
Special	88.8	0.001	0.001	0.001	0.002	0.0005	0.0005
1st	88.5	0.001	0.001	0.001	0.002	0.001	0.0005

Impurities (% max )
Mn	Ni	Si	Ti	Mo	Cu	V	P
0.0005	0.0005	0.002	0.0005	0.002	0.0005	0.0005	0.0007
--	0.0007	0.002	0.001	0.005	0.0007	0.001	0.0007

Impurities (% max )
S	Cr	Al	Sb	Pb	Sn	Bi	Cd
0.0007	0.0003	0.0003	0.0002	0.0001	0.0001	0.0001	0.0001
0.0007	--	0.0005	0.0005	0.0001	0.0001	0.0001	0.0001

lgniting loss(%)	Apparent density(g/cm³)	Screen size (mesh)
11.2	2~2.4	-80,100%
11.5	2~2.4

Packing : In sealed plastic bags with outer iron drums of 100 or 200 kgs net each. We can meet your special requirements.

Tungsten Trioxide

Formula : WO₃
Specifications

Grades	WO³ (% min)	Impurities (% max )
Grades	WO³ (% min)	Al	As	Bi	Ca	Mg	Cu	K	Na
WO₃-1	99.95	0.0005	0.001	0.0001	0.0015	0.0005	0.0003	0.001	0.001
WO₃-2	99.5	0.0015	0.01	--	0.01	0.01	--	0.005	0.005

Impurities (% max )
Fe	Mn	Mo	Ni	P	Pb	S	Sb	Si	Sn	Ti
0.001	0.0005	0.002	0.0007	0.0007	0.0001	0.0007	0.0003	0.001	0.0001	0.001
0.04	--	0.03	--	0.004	--	0.006	--	0.005	--	--

Physical specifications

Grades	WO₃ (% min )	Apparent density (g/cm³)	Average size (Fsss.)u	Screen size (mesh) 100%
WO₃-1	99.95	2~2.8	7~16	-40
WO₃-2	99.5	0.6~1.0	0.6~1.5

Packing : In iron drum lined with two plastic bags of 100 or 200 kgs net each.
Note : Any particular requirements to the products can be discussed.

Blue Tungsten Oxide

Formula : WO_3-x
Specifications

Grades	purity (%min )	Impurities ( % max )
Grades	purity (%min )	Al	As	Bi	Ca	Mg	Cd	Co	Cr	Cu	Fe
LWO_x-1	99.95	0.0005	0.001	0.0001	0.001	0.0007	0.0003	0.0005	0.0005	0.0005	0.0015
LWO_x-2	99.95	0.001	0.0015	0.0003	0.002	0.001	0.0003	0.001	0.001	0.001	0.002

Impurities (% max )
K	Na	Mn	Mo	Ni	P	Pb	S	Sb	Si	Sn	Ti	V
0.0015	0.001	0.0005	0.002	0.0012	0.0007	0.0001	0.0007	0.0003	0.001	0.0003	0.0007	0.0007
0.002	0.0015	0.001	0.003	0.0015	0.001	0.0003	0.001	0.0005	0.002	0.0005	0.001	0.001

Packing : In double plastic bags with outer iron drums of 100 or 200 kgs net each.
Note : Any particular requirements to the products can be discussed.

Tungsten Powder

Formula : W
Specifications

Grades	W (% min)	Impurities (% max )
Grades	W (% min)	Al	As	Bi	Ca	Mg	Cd	Co	Cr	Cu	Fe
FW-1	99.9	0.001	0.0012	0.0001	0.002	0.001	0.0003	0.001	0.0015	0.0008	0.004
FW-2	99.8	0.0015	0.0015	0.0003	0.003	0.0015	0.0003	0.001	0.0015	0.001	0.008

Impurities ( % max )
K	Na	Mn	Mo	Ni	P	Pb	Sb	Si	Sn	Ti	V	C
0.002	0.002	0.0007	0.004	0.002	0.001	0.0001	0.0003	0.002	0.0001	0.0008	0.0008	0.005
0.003	0.003	0.001	0.01	0.004	0.002	0.0003	0.0005	0.004	0.0003	0.001	0.001	0.01

Divided into 14 grades according to Fsss.size

Grades	Fsss	O₂ ( % max )
W-0	0.40~0.69	0.3
W-1	0.70~0.99	0.3
W-2	1.00~1.49	0.25
W-3	1.50~1.99	0.2
W-4	2.00~2.49	0.15
W-5	2.50~2.99	0.15
W-6	3.00~3.49	0.1
W-7	3.50~3.99	0.1
W-8	4.00~4.49	0.07
W-9	4.50~4.99	0.07
W-10	5.00~6.99	0.05
W-11	7.00~8.99	0.05
W-12	8.99~14.99	0.05
W-13	15.00~25.00	0.05

Packing : In iron drums lined with double plastic bags of 50 or 100 kgs net each.
Note : Any particular rtequirements to the products can be discussed.

Tungsten Carbide Power

Formula : WC
Specifications

Grades	WC (%min)	C %		Impurities (% max )
Grades	WC (%min)	Total C (%)	Free c(%)	Al	As	Bi	Ca	Mg	Cd	Cr	Cu
FWC-1	99.8	6.08~6.18	0.08	0.001	0.001	0.0002	0.0045	0.001	0.0002	0.006	0.0008
FWC-2	99.7	6.08~6.18	0.08	0.001	0.0015	0.0003	0.005	0.0015	0.0003	0.007	0.001

Impurities (% max )
Fe	K	Na	Mn	Mo	Ni	P	Pb	S	Sb	Si	Sn	V
0.03	0.0015	0.001	0.001	0.004	0.006	0.001	0.0002	0.001	0.0005	0.0035	0.0002	0.0008
0.05	0.002	0.0015	0.0015	0.01	0.007	0.0015	0.0003	0.0015	.0.0005	0.005	0.0003	0.001

Divided into 12 grades according to Fsss.size

Grades	Fsss	O2 (% max)
WC-2	1.00~1.49	0.18
WC-3	1.50~1.99	0.15
WC-4	2.00~2.49	0.12
WC-5	2.50~2.99	0.10
WC-6	3.00~3.49	0.08
WC-7	3.50~3.99	0.08
WC-8	4.00~4.49	0.08
WC-9	4.50~4.99	0.08
WC-10	5.00~6.99	0.08
WC-11	7.00~8.99	0.08
WC-12	9.00~14.99	0.08
WC-13	15.00~25.00	0.08

Packing : In iron drums lined with two plastic bags of 50/100 kgs net each.
Note : Any particular requirements to the products can be discussed.

Tungsten Wire

Specifications

Type, Composition and Applications
Type		W (%, min )			Applications
WAL₁		99.92			Filaments for high temperature,vibration resistant:doublespiral lamp filaments: grid cathodes: folding lamp filaments and stranded wire etc.
WAL₂		99.92			Lamp filaments: thermal filaments: grid cathodes: tungsten stranded wire and tungsten heaters etc.
W₁		99.95			Electrodes: heating components and stranded tungsten tungsten wires etc.
W₂		99.92			Grid siderods: leading wire and stranded tungsten wire etc.
Diameter, Weight and Allowed deviation
Diameter (µm)	Weight (mg/200mm)	Allowable deviation of weight			Allowable deviation of diameter (%)
		Grade-0	Grade-I	Grade-II	Grade-I	Grade-II
5≤d≤10	0.075~0.30	--	±4	±5	--	--
10≤d≤18	>0.30~0.98	--	±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