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铌棒
铌棒 Niobium rods
（1）.化学成分 Chemical composition
|
牌号 |
化学成分，%，不大于 |
||||||||||||
|
Fe |
Si |
Mo |
W |
Ti |
Cr |
Ta |
Ni |
O |
C |
H |
N |
Nb |
|
|
Nb1 |
0.005 |
0.005 |
0.010 |
0.010 |
0.002 |
0.002 |
0.10 |
0.005 |
0.020 |
0.020 |
0.001 |
0.01 |
余量 |
|
Nb2 |
0.01 |
0.005 |
0.010 |
0.020 |
0.005 |
0.005 |
0.25 |
0.005 |
0.040 |
0.030 |
0.005 |
0.025 |
余量 |
注：用户如有特殊要求，双方具体商定，Special requirements to be agreed upon by the supplier and buyer.
（2）.尺寸/公差（毫米，不大于）Size/tolerance ( mm.max)
|
直径 |
直径公差 Dia tolerance |
长度 |
长度公差 |
||
|
锻棒 As forged |
拉棒 As rolled |
车棒 As macheined |
|||
|
3.0~3.5 |
-- |
±0.05 |
-- |
500~1500 |
±2 |
|
>3.5~4.5 |
±0.15 |
-- |
-- |
500~1500 |
±2 |
|
>4.5~10 |
±0.15 |
-- |
-- |
400~1500 |
±2 |
|
>10~13 |
±0.15 |
-- |
-- |
300~1200 |
±2 |
|
>13~16 |
±0.20 |
-- |
-- |
200~1500 |
±2 |
|
>16~18 |
±0.20 |
-- |
±0.50 |
≤600 |
±2 |
|
>18~25 |
-- |
-- |
±0.50 |
≤600 |
±2 |
|
>25~40 |
-- |
-- |
±0.60 |
≤600 |
±2 |
|
>40~50 |
-- |
-- |
±0.70 |
≤600 |
±2 |
|
>50~60 |
-- |
-- |
±0.70 |
≤600 |
±2 |
注：用户如有特殊要求，双方具体商定，Special requirements to be agreed upon by the supplier and buyer.
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