MME Resources Limited

APT
Specs:Wo3:88.5% Min
Contents (PPM Max)
Pb/Bi/Sn 1PPM
Al/Co/Cr/Mn/Mg/Ni/Ti 5PPM
As/Fe/Si/Ca/K/Na/V 10PPM
CU:3PPM Sb 2PPM
Mo:20PPM P/S:7PPM
Packing: in iron drums with inner plastic bags

BTO
Wo3: 99.95% Min
Contents (PPM Max)
Pb/Bi 1PPM Sb/Cu 3PPM
Mn/Co/Ti/Al/Ni/Mg/Cr/Ca/V/Sn 5PPM
Ca 9PPM P/S 7PPM Mo:50PPM
As/Si/Fe/K/Na 10PPM
Packing: in iron drums with inner plastic bags

Custom specifications are available upon request.

Tungsten, a silver-gray metal, is mined from scheelite and wolframite and appears in nature in four major forms combined with calcium, iron or manganese. Most current mine production of tungsten is from vein/stockwork, skarn, porphyry and strata-bound deposits. Minor amounts are produced from pegmatite, breccia and placer deposits. It has a high melting point and density, good thermal and electrical conductivity, a low coefficient of expansion as well as exceptional strength at elevated temperatures. It is consumed predominantly as tungsten carbide in cutting and wear-resistant components as well as an alloying agent in steelmaking. Also, often as an alloy, it is used for lamp and lighting filaments and electrodes, electrical and electronic contact surfaces, heat and radiation shielding in high-temperature furnaces and X-ray equipment, and electrodes in certain welding methods. Some non-metallurgical applications of tungsten are as phosphorescent chemicals in pigments, X-ray screens, television picture tubes and fluorescent lighting. Tungsten is also used in armor-piercing ordnance and tank shielding. The name tungsten comes from the Norse word thungr-steinn, which means "heavy stone."

Home I Link to MME I Site Map I Contact us