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Sulfur hexafluoride (SF6) is a colorless in-noxious and non-flammable gas at atmospheric temperature.. It is chemical stable with good insulation.Sulfur hexafluoride (SF6) is an inorganic, colorless, odorless, non-flammable, extremely potent greenhouse gas, which is an excellent electrical insulator.[4] SF6 has an octahedral geometry, consisting of six F2 atoms attached to a central sulfur atom.
Vapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating, corrosive and/or toxic gases.
Some may burn but none ignite readily. Containers may explode when heated. Ruptured cylinders may rocket.
Typical technical data (COA)
Grade Classification | GB/T12022-2006 | High Purity |
4.5N | ||
(SF6) % | ≥99.9 | ≥99.995 |
Air % | ≤0.04 | ≤0.003 |
(CF4) % | ≤0.04 | ≤0.003 |
Water ppm | ≤5 | ≤1 |
Acidity ppm | ≤0.2 | ≤0.1 |
Hydrolyze fluoride(As HF) ppm | ≤1 | ≤0.2 |
Mineral oil ppm | ≤4 | ≤1 |
Toxicity | Non-tox. | Non |
SF6 is nonflammable gas, permissible Exposure Limit of 1000 ppm.non-poisonous, colourless gas, and used for Electronics equipment,transformer,refrigerating fluid
Main applications
Sulphur hexafluoride (SF6) is an excellent dielectric gas for high voltage applications. It is chemically inert, gaseous even at low temperature, non flammable, non toxic, non corrosive. Its combined chemical, thermal and electrical properties allow many advantages to be achieved.
Electric Grade
Application as dielectric gas
Gas insulated high voltage circuit breakers and other switchgears
Gas insulated power transmission lines and power distribution substations
High voltage transformers, linear accelerators, coaxial cables, waveguides, switches,x-ray apparatus and capacitors.
Electronic Grade
High Purity Grade Application
Etching agent for the plasma processing
Metallurgic Grade
Foundry Applications and metal casting
Component of inert atmosphere during the primary casting of Aluminum and Magnesium. Refining agent for Aluminum foundry applications. N2 / SF6 gas mixtures (5 - 10 % by volume of SF6) are employed to refine pure Aluminum or its alloys at melt temperatures in the range 650 - 750 °C. SF6 is a source of F2 atoms reacting in the melt and removing inclusions of H2, oxides, particles and other casting impurity.
SF6 Quality Indicators
| Index | |
SF6 | ≥99.999% | ≥99.99% |
O2+Ar | ≤2.0 ppmv | ≤10 ppmv |
N2 | ≤3.0 ppmv | ≤40 ppmv |
CF4 | ≤0.5 ppmv | ≤30 ppmv |
H2O | ≤2.0 ppmv | ≤10 ppmv |
HF | ≤0.1 ppmw | ≤0.3 ppmw |
(CH4) | ≤0.1 ppmv | ≤1.0 ppmv |
CO2 | ≤0.5 ppmv | ≤6 ppmv |
C0 | ≤0.5 ppmv | ≤2 ppmv |
Products using a variety of seamless steel gas cylinders series packing specifications, to meet different customers needs.
Cylinder size | DOT 48.8 L | DOT 47L | 40L | 10L | 4L |
Valve mode | CGA580 CGA590 QF-2 | ||||
Package: steel cylinders with different sizes
1.What's your product price?
Because each gas price is depends on the market supply and demand, quantity and purity, it is difficult to give a fixed price. If you have any interested in each gas, pls give your details requirement. I could like to make an offer to you.
2.What’s the min order?
Different products have different min order. Please don’t hesitate to let me know your requirement.
3.What’s the delivery time?
If the cylinder is in the stock, and only need to fill gas, the delivery is about 7-10 days ex work after receive the deposit.
If the cylinder need to customize, the delivery is about 15-35 days ex work after receive the deposit. That is depends on the quantity.
4.How to check the gas quality?
Firstly, our cylinder will take a treatment (cleaning, drying, vacuum pumping, and replacement before filling gas. In this way, the cylinder inside is clear and dry. Secondly, we will take tests every treated cylinder to assure them inside purity. Thirdly, we will take a test for all of the gas after fill into cylinders. If the tested gas is not up to standard, we will produce it again and not release the faulty product to ex work. At last, we will supply you the gas test qualified report .
5.All the cylinders can recycle?
Usually seamless steel cylinder can recycle to use in 20 years. The disposable cylinder is only for use one time.
6.Shall we send back the cylinders to China to refill gas again?
Yes, when you ordered our cylinders, next time, you can send back the cylinders to fill gas again. You just need to tell us before you export. We will handle all the import customs clearance formalities.
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