METALLOGRAPHY
It is typical of niobium alloys to display Òstringers" in heavily worked material. These stringers result from interstitial impurities which occur predominately in the grain boundaries during casting. In subsequent fabrication, these impuri-ties are stretched along the work direction and eventually form very fine intermetallic compounds which show up after recrystallization annealing as peppery areas.

CHEMICALS

Wah Chang also has a large chemical products department which manufactures the major chemical products in the primary metals produced at this facility. These made-to-special-order chemicals include:

• Niobium Carbide
  
• Niobium Hydride
  
• Niobium Oxide
  
• Tantalum/Niobium Carbide

We would be happy to review your requirements for any chemicals in the refractory metal line.

Wah Chang manufactures a variety of material for alloy additions such as vacuum grade ferro niobium, nickel niobium, and pure material of niobium.

Page 23 of 34 Next

INDEX  •  CORROSION RESISTANCE PROPERTIES  •  FABRICATION   
NIOBIUM PRODUCTS   •  SPECIFICATIONS of NIOBIUM   
NIOBIUM ELECTRONICS APPLICATIONS