Tungsten Carbide

2013年7月24日星期三

Ø10 × 100 – The Cheapest YG12X Tungsten Carbide Rod Grounded & Ungrounded

Ø10 × 100 grounded and ungrounded YG12X tungsten carbide rod of Chinatungsten Online on sale, there are many tungsten carbide rods in our stock, we would like to sell these rods by 30% off discount. Meanwhile, we promise that all these tungsten carbide rods are of great performance as following detail information.

Commodity	Tungsten Carbide Rod
Grade	YG12X
Composition	87.0%WC12.0%Co1.0%Others
Reference Density	14.08	g/cm³
Reference Hardness	92.4	HRA
Reference T.R.S.	3800	N/mm²
Reference Grain Size	0.6	um
Porosity	A02 B00 C00	/
Size	Ø10 × 100	mm
Surface	H6 Grounded		Ungrounded
Price	1.10	USD/PC	/	USD/PC
Stock Quantity	142	PCS	/	PCS
Reference Weight	0.014	KG/PC	/	KG/PC
Price and Stock Quantity Validity	Will be rechecking to see whether there is any change when we have your order confirmation.
If you have a large quantity or other grade and material properties requirements, please feel free to contact us. We are able to arrange the production at once, but the price will recalculate for you accordingly.

More information about tungsten carbide products please visit http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

2013年7月23日星期二

Ø11 ×300 – The Cheapest Tungsten Carbide Rod Grounded & Ungrounded

Ø11 ×300 grounded and ungrounded tungsten carbide rod of Chinatungsten Online on sale, there are many tungsten carbide rods in our stock, we would like to sell these rods by 30% off discount. Meanwhile, we promise that all these tungsten carbide rods are of great performance as following detail information.

Commodity	Tungsten Carbide Rod		Unit
Grade	YG10		/
Composition	89.5%WC10%Co0.5%Others		/
Reference Density	14.40		g/cm³
Reference Hardness	91.50		HRA
Reference T.R.S.	4000		N/mm²
Reference Grain Size	0.70		um
Porosity	A02 B00 C00		/
Size	Ø11 ×300		mm
Surface	Grounded	Ungrounded	/
Price	/	34.6	USD/PC
Stock Quantity	/	11	PCS
Reference Weight	/	0.491	KG/PC
Price and Stock Quantity Validity	Will be rechecking to see whether there is any change when we have your order confirmation.
If you have a large quantity or other grade and material properties requirements, please feel free to contact us. We are able to arrange the production at once, but the price will recalculate for you accordingly.

2013年7月9日星期二

Ø11.3 × 152.4 – The Cheapest Tungsten Carbide Rod Grounded & Ungrounded

Ø11.3 × 152.4 grounded and ungrounded tungsten carbide rod of Chinatungsten Online on sale, there are many tungsten carbide rods in our stock, we would like to sell these rods by 30% off discount. Meanwhile, we promise that all these tungsten carbide rods are of great performance as following detail information.

Commodity	Tungsten Carbide Rod		Unit
Grade	YG10		/
Composition	89.5%WC10%Co0.5%Others		/
Reference Density	14.40		g/cm³
Reference Hardness	91.50		HRA
Reference T.R.S.	4000		N/mm²
Reference Grain Size	0.70		um
Porosity	A02 B00 C00		/
Size	Ø11.3 × 152.4		mm
Surface	Grounded	Ungrounded	/
Price	/	15.9	USD/PC
Stock Quantity	/	107	PCS
Reference Weight	/	0.226	KG/PC
Price and Stock Quantity Validity	Will be rechecking to see whether there is any change when we have your order confirmation.
If you have a large quantity or other grade and material properties requirements, please feel free to contact us. We are able to arrange the production at once, but the price will recalculate for you accordingly.

Corrosion Resistance of Tungsten Carbide Grades

Cobalt is by far the most widely used binder metal or “cement” in cemented tungsten carbides because it most effectively wets tungsten carbide grains during liquid phase sintering. For this reason cobalt is believed to be superior to other binder metals in terms of eliminating residual porosity and achieving high strength and toughness values in sintered products. The failure of cemented carbides in corrosive environments, however, is generally due to the chemical reaction of cobalt with corrosive agents. The corrosion process involves the dissolution of the cobalt binder at exposed surfaces leaving a loosely knit skeleton of tungsten carbide grains having little structural integrity. This mechanism is often referred to as cobalt “leaching” and is typically accompanied by a flaking off of unsupported carbide grains in the affected surface areas.
Although WC + Co grades have fairly good resistance to attack by acetone, ethanol, gasoline and other organic solvents as well as by ammonia, most bases, weak acids, and tap water. Exposure to formic, hydrochloric, hydrofluoric, nitric, phosphoric, sulfuric, and other strong acids, however, can result in a relatively rapid deterioration of the binder phase. Corrosion rates are affected also by temperature, the concentration and electrical conductivity of the corrosive agent, and by other environmental factors. Alloying cobalt with chromium, molybdenum, and/or nickel can significantly improve the resistance of the binder to corrosion, but the complete substitution of nickel for cobalt has proven to be the most effective means of extending the life of cemented carbides in highly corrosive environments. WC + Ni grades and other special formulations designed to resist corrosion without compromising strength or other attributes are therefore ideal for applications such as seal rings, fluid control components, choke valves, nozzles, and bearings.
The charts below are intended to serve only as general indicators of the corrosion resistance of cemented carbide grades. Table 1 shows general corrosion ratings for Co and Ni binder grades as a function of pH value. Table 2 shows the relative corrosion resistance of selected Federal Carbide grades based on the weight loss of test coupons immersed in various solutions for a specific period of time.

What is Tungsten Carbide

Tungsten Carbide is the upcoming rage in men’s wedding bands thanks to it’s colour, durability and affordability, but what is it?
Tungsten Carbide is an inorganic compound composed of equal parts Tungsten and Carbon (thanks Wikipedia!). They combine to form a hard, strong and dense compound which is even harder than Titanium.
Often used in industrial components such as drill bits and machine parts, Tungsten Carbide has also been used as armor-piercing ammunition, the rotating ball in ballpoint pens and even the tips of roller-ski poles.
The compound is now a popular choice for masculine jewelry and wedding bands (see examples), available in highly polished or brushed designs and able to support inlaid patterns and metals and a wide variety of faceted styles which unlike softer metals will not be worn down over time.

How hard is Tungsten Carbide

Tungsten carbide is hard. Very hard. But how hard is very hard? Hardness is measured on the Moh’s scale. You probably haven’t heard of it before, but we can easily use it to compare some common metals and materials to give you an idea just how hard Tungsten Carbide is.
As you can see in the chart, Diamond is the only thing you’d recognize which is harder than Tungsten Carbide. Gold as you know is a softer metal which is why it only scores a six on the mohs scale. This is why you’ll notice gold rings getting scratched, having any hard edges smoothed over as time goes on and generally losing that ‘new’ appearance. In fact, the harder variations of gold are LESS pure, meaning if you want it to last you will have to choose an alloy anyways.

Tungsten carbide products

Tungsten carbide is a material used for a number of industrial applications and it is characterized by its high strength, toughness and hardness. Its name derives from the Swedish for tung (heavy) and sten (stone) and it is mainly used in the form of cemented tungsten carbides. Cemented carbides (also known as hardmetals) are made by 'cementing' grains of tungsten carbide into a binder matrix of cobalt or/and nickel.
Tungsten carbide as a material can vary in carbide grain size (0.2 – 50 microns) and by binder contents (up to 30%), as well as by the addition of other carbides. By varying the grain size of the tungsten carbide and the binder content in the matrix, engineers have access to a class of materials whose properties can be tailored to a variety of engineering applications. This includes high-tech tools, wear parts and tools for the construction, mining and oil and gas sector.
Tungsten carbide products typically have a high resistance to wear and can be used at high temperatures, allowing tungsten carbide's combined hardness and toughness to significantly outperform its steel product equivalents.
Element Six tungsten carbide products
Our Hard Materials Division has been manufacturing tungsten carbide for over 60 years. We develop, produce and sell hardmetals and special tools for industries ranging from construction, mining and tunnelling, to oil and gas, textiles, automotive and agriculture. Our comprehensive unrivalled quality assurance programme ensures that all our inserts are certified to ISO 9001:2008 quality standards. For more information, please see our brochures.
As a company, we are focused on building business partnerships as our greatest strength is in developing customised solutions that create long-term advantages for our partners.

订阅：博文 (Atom)