Supply Tungsten Oxide Sample

Chinatungsten Online supply sample of tungsten oxide with USD90.00 per kilograms when quantity is under 10kgs. Blue tungsten oxide with 12~19um, 99.95%, yellow tungsten oxide with 0.8~1.6um, 99.9%, yellow tungsten oxide with 12~20um, 99.95% and violet tungsten oxide with 10~19um, 95% are four main specifications we supplied. If the specification and price is acceptable, you may inform us to check the stock.

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Supply Tungsten Carbide Powder Sample

Chinatungsten Online supply tungsten carbide powder sample with 99.8% and medium grain size, priced USD90.00 per kilograms, when quantity is under 10kgs. There are other specifications supplied. Sometimes, some users ask for content of carbon and oxygen which we could match. 

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Supply Tungsten Powder Sample

There are several specifications with different grain size of tungsten powder manufactured and supplied by Chinatungsten Online. In order to match testing requirement, we supply tungsten powder sample which is quoted USD90.00/KG, when quantity is under 10kgs. There are many specifications of tungsten powder sample in stock, the most regular is 2~10um with 99.95%. More information, please visit: www.tungsten-powder.com

Tungsten Disulfide (WS2)

Tungsten disulfide (WS2) is dry/solid lubricant powder and is one of the most lubricious substance in world. WS2 offers excellant dry lubricity (COF: 0.03) unmatched to any other substance, including Graphite or Molybdenum Disulfide (MoS2).
Tungsten disulfide (WS2) can also be used in high temperature and high pressure applications. It offers temperature resistance from -450 deg F (-270º C) to 1200 deg F (650º C) in normal atmosphere and from -305 deg F (-188º C) to 2400º F (1316º C) in Vacuum. Load bearing ability of coated film is extremely high at 300,000 psi.
Tungsten disulfide (WS2) can also be used instaed of Molybdenum Disulfide (MoS2). See comparison of WS2 / MoS2
Since the powder offers one of the lowest Coefficient of Friction (Dynamic @ 0.03 & Static @ 0.07), the applications are unlimited and could be tried with every conceivable idea.

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Carbon Content

The carbon content of a WC powder is commonly stated as total carbon and free carbon (uncombined carbon present as graphite or amorphous carbon). The difference between these values accounts for the combined carbon (chemically bound as carbide).
The total carbon content should be theoretically 6.13 wt% carbon, which means that all carbon is chemically combined as WC. However, in practice, a small amount of uncombined carbon is always present (some hundredths of percent).

The proper total carbon depends on further processing of the powder (compact) and is dictated by the hardmetal producer, due to its processing experience (carburizing, neutral, or decarburizing conditions).

The determination method is described in ISO 3907 and ISO 3908 and should result in standard deviation of no more than +0.01 wt%.

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Specification of Tungsten Oxide from National Standard

Specification of tungsten oxide from national standard

Grades		WO3-0 WOX-0	WO3-1 WOX-1	WO3-2 WOX-2
Impurity Content Max.	Al	0.0005	0.001	0.001
	As	0.001	0.001	0.003
	Bi	0.0001	0.0001	0.0005
	Ca	0.001	0.001	0.003
	Co	0.001	0.001	0.002
	Cr	0.001	0.001	0.001
	Cu	0.0003	0.0005	0.001
	Fe	0.001	0.001	0.003
	K	0.001	0.0015	0.002
	Mg	0.0007	0.001	0.002
	Mn	0.001	0.001	0.001
	Mo	0.002	0.005	0.02
	Na	0.001	0.0015	0.003
	Ni	0.0007	0.0007	0.001
	P	0.0007	0.001	0.002
	Pb	0.0001	0.0001	0.0005
	S	0.0007	0.001	0.001
	Sb	0.0005	0.001	0.002
	Si	0.001	0.001	0.003
	Sn	0.0002	0.0005	0.001
	Ti	0.001	0.001	0.002
	V	0.001	0.001	0.002
	WO3 LOI	0.5	0.5	0.5

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Specification of Tungsten Carbide Powder from National Standard

Specification of tungsten carbide powder from national standard

牌号Grades	比表面积/(m2/g)	平均粒度范围(F.S.S.S) /µm	氧含量(Oxygen) /%不大于	总碳(TC)/ %	游离碳(FC) /%不大于	化合碳(CC) /%不小于
FWC02-04	＞	--	0.35	6.20~6.30	0.20	6.07
FWC04-06	1.5~2.5	--	0.30	6.15~6.25	0.15	6.07
FWC06-08	--	≥0.60~0.80	0.20	6.13~6.23	0.12	6.07
FWC08-10	--	＞0.8~1.00	0.18	6.08~6.18	0.08	6.07
FWC10-14	--	＞1.00~1.40	0.15	6.08~6.18	0.06	6.07
FWC14-18	--	＞1.40~1.80	0.15	6.08~6.18	0.06	6.07
FWC18-24	--	＞1.80~2.40	0.12	6.08~6.18	0.06	6.07
FWC24-30	--	＞2.40~3.00	0.10	6.08~6.18	0.06	6.07
FWC30-40	--	＞3.00~4.00	0.08	6.08~6.18	0.06	6.07
FWC40-50	--	＞4.00~5.00	0.08	6.08~6.18	0.06	6.07
FWC50-70	--	＞5.00~7.00	0.05	6.08~6.18	0.06	6.07
FWC70-100	--	＞7.00~10.00	0.05	6.08~6.18	0.06	6.07
FWC100-140	--	＞10.00~14.00	0.05	6.08~6.18	0.06	6.07
FWC140-200	--	＞14.00~20.00	0.05	6.08~6.18	0.06	6.07
FWC200-260	--	＞20.00~26.00	0.05	6.08~6.18	0.06	6.07
FWC260-350	--	＞26.00~35.00	0.08	6.08~6.18	0.06	6.07

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Analyses of tungsten powder from national standard

Analyses of tungsten powder from national standard

Grades		FW-1	FW-2	FWP-1
Impurity Content(%)Max	Fe	F.S.S.S< 10um;0.0050	0.030	0.030
		F.S.S.S≥10um;0.010
	Al	0.0010	0.0040	0.0050
	Si	0.0020	0.0050	0.010
	Mg	0.0010	0.0040	0.0040
	Mn	0.0010	0.0020	0.0040
	Ni	0.0030	0.0040	0.0050
	As	0.0015	0.0020	0.0020
	Pb	0.0001	0.0005	0.0007
	Bi	0.0001	0.0005	0.0007
	Sn	0.0003	0.0005	0.0007
	Sb	0.0010	0.0010	0.0010
	Cu	0.0007	0.0010	0.0020
	Ca	0.0020	0.0040	0.0040
	Mo	0.0050	0.010	0.010
	K+Na	0.0030	0.0030	0.0030
	P	0.0010	0.0040	0.0040
	C	0.0050	0.010	0.010
	O	Sheet Ⅱ		0.20

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