Oxidation experiments were performed on pure tungsten and hot-pressed tungsten carbide. The chemical state and thickness of the oxide products were determined by ESCA. The oxidation of W and WC in dry atmosphere was performed in oxygen at temperatures ranging from 20 to 500 °C. The oxide formed is WO3. The thickness of the oxide layer increases slowly up to 200 °C, after which the oxide growth is rapid.

The oxidation behaviour of W and WC in humid atmospheres was studied at room temperature in air at relative humidities of 60 and 95%. It was found that the thickness of the oxide layer increases with increased humidity. No formation of hydroxide was observed. Exposing W to water for one week results in a thick layer of WO2, WO3 and hydroxide. In the case of WC no oxide at all was visible after exposure to water. Furthermore, WC is resistant to further oxidation after exposure.


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Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of Beretta 682.

The Beretta 682 (also known as the S682, 682 Gold and currently 682 Gold E) is a competition grade over-under shotgun. It is manufactured, marketed, and distributed by Fabbrica d'Armi Pietro Beretta, in Gardone Val Trompia, Italy.

The 682 comes in various grades for sporting clays, trap and skeet shooting.

It is distributed in the UK by GMK Ltd, and in the United States by Beretta USA.

Using tungsten alloy shot, Beretta 682 has good performance in hunting competition.



Tungsten Heavy Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of AL391.

The Beretta AL391 is a semi-automatic shotgun. It is manufactured, marketed, and distributed by Fabbrica d'Armi Pietro Beretta, in Gardone Val Trompia, Italy.

The AL391 is most often used for hunting birds, and for clay target games such as trap and skeet. There are several different models, each with multiple variations. The AL391 is chambered in either 12 gauge or 20 gauge.

Tungsten alloy shot has hgih density and high hardness. For this AL391 has high power in combat.



Tungsten Heavy Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of Benelli Vinci.

The Benelli Vinci is a semi-automatic shotgun manufactured and sold by the Benelli company. It uses an inertia-driven system of operation, and contains recoil-reducing features. It also features a modular design consisting of the barrel/receiver module (containing the operating system, barrel, and bolt), the trigger group/forearm module (containing the trigger assembly, safety, shell carrier and magazine), and the buttstock. The shotgun was named after Leonardo da Vinci. It is Benelli's first shotgun to feature an in-line inertia-driven operating system. It is intended primarily for hunting, rather than combat or self-defense; the M3 and M4 shotguns are Benelli's primary contenders in the tactical shotgun market.

Using tungsten alloy shot, Benelli Vinci can be used in anti-terrorism operation.



Tungsten Heavy Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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