99.9% Nb1 铌保护管

牌号nb1产地宝鸡含量≥99.9（%）杂质含量0.1（%）

chemistry %

designation

chief component

impurities maximum

nb

fe

si

ni

w

mo

ti

ta

o

c

h

n

nb1

remainder

0.004

0.003

0.002

0.004

0.004

0.002

0.07

0.015

0.004

0.0015

0.002

nb2

remainder

0.02

0.02

0.005

0.02

0.02

0.005

0.15

0.03

0.01

0.0015

0.01

table 2. mechanical re (annealedcondition)