الوصف

~Product name: Niobium rod
Standard : ASTM B *****8
Form: Annealing, Hard
Brand: RO*****1，RO*****2
Purity: ≥*9.*5%
Specification: diameter:Φ 3 mm - Φ**0 mm
Appearance: the sucface of niobium rod with cold working or annealing
Should be no crack, no folded, no pores ,no impurities , no heavy leather, no residual lubricant, no oxide .
        the sucface of niobium rod with hot working should be no crack, no folded, no heavy leather, the depth of grooving pit, scratch, scratch in the bar surface which is not more than half of the diameter tolerance is allowed.
Chemical composition:
~Type Chemical composition(MAX%)           
 Fe Si Ni W Mo Ti Ta O C H N Nb
Nb1 0.**4 0.**4 0.**2 0.**5 0.**5 0.**2 0.**5 0.**2 0.**3 0.**2 0.**3 Remain
Nb2 0.**1 0.**1 0.**5 0.**2 0.**1 0.**4 0.**7 0.**5 0.**5 0.**5 0.**8 Remain
"           Special requirements will be welcome to contact us
"            

~Application: Niobium rods and niobium alloy bars used as structure material of aircraft engine, rocket nozzle, materials inside of reactor ,
the sheath material inside of reactor, Corrosion resistant parts. To improving obviously the oxidation resistance and strength ,adding zirconium in niobium rods is a good way.