High quality Tungsten CAS NO.7440-33-7

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Min.Order: 1 Kilogram
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Product Details

Keywords

Tungsten
7440-33-7
Tungsten Price

Quick Details

ProName: High quality Tungsten
CasNo: 7440-33-7
Molecular Formula: W
Appearance: Silver gray powder
Application: pharmaceutical intermediates
DeliveryTime: WIthin 2 days
PackAge: 25KG/DRUM
Port: Qingdao Port
ProductionCapacity: 3000 Metric Ton/Month
Purity: 99%
Storage: Store in dry dark and ventilated place
Transportation: By express,By Air or by sea
LimitNum: 1 Kilogram
Moisture Content: NA
Impurity: NA
Email: info@sigmachemical.com.cn

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We promise our customer following items

1.Reasonable pre price:

We provide high quality products with competitive price in china,

2.Low moq moq:

No worry about the low moq, our moq is 1 gram or lower.

3.Good and and efficient service,Fast Delivery

Fast respond save client's time, we promise to reply inquiry in 24 hours including holidays and send quotation sheet and other documents in 48 hours.

4.Super-goo-good quality

We have strict quality control system .Good reputation in Market

If you have any further questions or need a sample,Please do not hesitate to contact us.

Jessica | Senior Sales | Qingdao Sigmachemical Co.,Ltd

| Wechat/Whatsapp/Skype/Phone Number. +86 18661792112

| Email. l. info@sigmachemical.com.cn

| A

| Address:No 70,Shandong Road,Qingdao city,China

Details

roduct Description

Tantalum powder
CAS:	7440-33-7
MF:	Ta
MW:	180.95
EINECS:	231-135-5
Melting point	2996 °C(lit.)
Boiling point	5425 °C(lit.)
Form	Silver gray powder

1.Capacitor grade tantalum powder

It is suitable for making capacitors with rated withstand voltage of 4v-40v. Ta electrolytic capacitors and organic polymer capacitors with excellent properties have the advantages of good formability, high specific capacitance, low leakage current and low equivalent series resistance.

Product name	Impurity less than(ppm)		Physical property		Electrical properties
Product name	O	N	SBD(g/cc)	Fsss(μm)	specific capacitance (μFV/g)	leakage current (μA/μFV)
FTW60	1800	100	1.9-2.5	4.5-7.5	6000+10 -5%	<2.0×10-4
FTW80	2200	120	1.8-2.3	4.5-6.5	8000+10 -5%	<2.0×10-4
FTW170	2400	150	1.7-2.1	2.5-4.5	15000+10 -5%	<2.2×10-4
FTW230	1800	150	1.6-2.0	2.4-3.5	23000+10 -5%	<2.2×10-4
FTW300	2300	400	1.7-2.1	2.4-3.5	32000+10 -5%	<2.5×10-4
FTW400	2500	400	1.6-2.0	2.0-3.5	40000+10 -5%	<2.5×10-4
FTW500	3200	400	1.6-2.0	2.0-3.4	50000+10 -5%	<2.5×10-4
FTW700	3600	600	1.5-1.9	1.8-3.0	70000+10 -5%	<2.8×10-4
FTW800	5000	1500	1.5-1.9	1.4-2.8	80000+10 -5%	<3.1×10-4
FTW100K	6000	1500	1.4-2.3	1.2-2.6	100000+5 -5%	<3.5×10-4
FTW120K	7500	1800	1.7-1.9	0.8-2.2	120000+5 -5%	<3.5×10-4
FTW170K	9500	2700	1.68-1.98	1.6-2.8	170000+5 -5%	<4.0×10-4
FTW200K	11500	3000	1.6-2.1	1.0-2.6	200000+5 -5%	<4.5×10-4

2. Metallurgical grade tantalum powder

Suitable for powder metallurgy to produce various tantalum processing materials and alloy additives.

3.Medium and high pressure tantalum powder

FTP series sheet tantalum powder is a kind of tantalum powder with original particle as flake. Compared with sodium-reduced tantalum powder, this kind of tantalum powder has the advantages of larger Ferri particle size, smaller specific surface area and simpler grain shape. It has good sintering resistance, high reliability and high voltage resistance. It is especially suitable for making medium and high voltage solid tantalum electrolytic capacitors with high reliability requirements of 20~63V

Product name	Apparent density (g/cm3)	Average grain size(μm)	O(< ppm)	N(< ppm)	pressed density g/cm3	Sintering conditions ℃/min	Energizing voltage /Test voltage	specific capacitance (μFV/g)	leakage current (μA/μFV)
FTP50	1.8-3.5	5.0-9.5	1600	60	6.5	1850/30	240/170	5000	6×10-4
FTP80	1.5-3.0	3.5-6.0	2200	150	5.5	1750/30	200/140	800	4.5×10-4
FTP85	1.5-2.5	3.0-6.0	2000	150	5.5	1750/30	200/140	8000	4×10-4
FTP100	1.5-2.5	3.0-5.5	2200	150	5.5	1700/30	160/112	10000	4×10-4
FTP150	1.3-2.0	2.0-4.5	2200	200	5	1600/30	160/112	15000	5.5×10-4
FTP200	1.5-2.0	2.0-4.0	2500	300	5	1500/30	140/98	20000	5×10-4
FTP300	1.5-2.0	2.0-4.0	2500	300	5	1450/30	100/70	30000	5×10-4
FTP400	1.3-2.0	1.5-3.5	2800	400	5	1400/30	70/49	40000	5×10-4