http://sk.megapenissize.com/ http://sk.megapenissize.com/ Niobium, formerly called columbium, melts at 2468° C (4474° F). It is a tough, ductile, silver-gray metal having a unique combination of physical and mechanical properties. Of the five major refractory metals, it has the lowest melting temperature, density (8.57 g/cm3), and elastic modulus at room temperature (103 GPa, or 14.9 x 106), while its coefficient of linear thermal expansion (7.3 m/m – K) is the highest. Niobium is also extremely stable in a wide variety of corrosive environments including most organic acids and mineral acids with the exception of hydrofluoric acid. Major applications are in capacitors, lighting and chemical processing.
pozicionet e seksit One niobium alloy, commonly used in lighting and chemical processing, has 8 names:
http://vn.megapenissize.com • NB-1Zr
• Niobium One Zirc
• Niobium Zirconium
• Niobium – 1 Zirconium
• Niobium 1% Zirconium
• Niobium 1% Zirc