1、杂质含量
品级 |
FW-1 |
FW-2 |
|
钨含量不低于(%) |
99.95 |
99.95 |
|
杂质含量不大于(%) |
Pb |
0.0001 |
0.0003 |
Bi |
0.0001 |
0.0003 |
|
Sn |
0.0001 |
0.0003 |
|
Sb |
0.0003 |
0.0005 |
|
As |
0.0007 |
0.001 |
|
Fe |
0.004 |
0.006 |
|
Ni |
0.0015 |
0.0025 |
|
Cu |
0.0001 |
0.0003 |
|
Al |
0.0005 |
0.001 |
|
Si |
0.001 |
0.0015 |
|
Ca |
0.001 |
0.0015 |
|
Mg |
0.0003 |
0.0007 |
|
Mo |
0.002 |
0.003 |
|
P |
0.0007 |
0.001 |
|
C |
0.003 |
0.005 |
2、氧、铁含量控制要求
型号 |
费氏平均粒度(um) |
O% |
Fe% |
商品 |
商品 |
||
FW-010 |
(0.90-1.10)±0.1 |
0.2 |
0.005 |
FW-015 |
(1.3-1.70)±0.2 |
0.12 |
0.005 |
FW-020 |
(1.5-2.50)±0.2 |
0.08 |
0.005 |
FW-030 |
(2.5-3.50)±0.2 |
0.06 |
0.005 |
FW-040 |
(3.5-4.50)±0.3 |
0.05 |
0.005 |
FW-050 |
(4.5-5.50)±0.3 |
0.05 |
0.005 |
FW-060 |
(5-7.0)±0.5 |
0.05 |
0.005 |
FW-080 |
(7-9.0)±1.0 |
0.05 |
0.005 |
FW-100 |
(9-11.0)±1.0 |
0.05 |
0.03 |
FW-130 |
(11-15.0)±1.5 |
0.05 |
0.03 |
FW-175 |
(15-20.0)±2.0 |
0.05 |
0.03 |
FW-250 |
(20-30.0)±2.0 |
0.05 |
0.03 |
3、Fsss粒度可按客户要求生产