Vulcan Metal Group

  Tantalum is a chemical element with the symbol Ta and atomic number 73. It is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. Tantalum is part of the refractory metals group , which also includes niobium. Here are some key characteristics and applications of tantalum: High Melting Point: Tantalum has a high melting point of about 3,017 degrees Celsius (5,463 degrees Fahrenheit), making it suitable for high-temperature applications. Density: Tantalum is a dense metal with a density of approximately 16.6 grams per cubic centimeter. Corrosion Resistance: One of the notable properties of tantalum is its excellent corrosion resistance. It is resistant to corrosion by acids and is known for its stability in corrosive environments. This property makes tantalum valuable in chemical processing and corrosion-resistant applications. Ductility: Tantalum is ductile, meaning it can be drawn into thin wires or stretched without breaking. This property con...

  Kovar is a specific type of alloy known for its low coefficient of thermal expansion (CTE), making it particularly useful in applications where dimensional stability over a range of temperatures is crucial. Kovar is an iron-nickel-cobalt alloy with controlled expansion characteristics. Its chemical composition typically includes: Iron (Fe): Around 54% Nickel (Ni): Around 29% Cobalt (Co): Around 17% Trace amounts of other elements such as manganese, silicon, and carbon. The name "Kovar" is derived from the first syllables of the main components—Ko for cobalt, Va for iron, and R for the Russian scientist Boris Vasilievich Romanov, who was involved in its development. Key characteristics and applications of Kovar alloy include: Low Coefficient of Thermal Expansion (CTE): Kovar is designed to exhibit a low CTE, meaning that it expands or contracts very little with changes in temperature. This property is crucial in applications where dimensional stability is essential, partic...