Code

规格

TREM

（ %）

Y/RE

（ %）

RE Impurities Content (%/TREM)

稀土杂质含量

Non-RE Impurities Content (%/TREM)

非稀土杂质含量

La+Ce+…+Tb+Lu

Mg

Al

Si

Ca

Fe

Ta

C

O

W

4N-Y

≥ 99

≥ 99.99

≤ 0.01

≤ 0.01

≤ 0.01

≤ 0.01

≤ 0.03

≤ 0.10

≤ 0.01

≤ 0.01

≤ 0.40

≤ 0.40

3N-Y

≥ 99

≥ 99.9

≤ 0.10

≤ 0.01

≤ 0.01

≤ 0.01

≤ 0.05

≤ 0.10

≤ 0.01

≤ 0.01

≤ 0.40

≤ 0.40

4NY-A

≥ 99.5

≥ 99.99

≤ 0.01

≤ 0.003

≤ 0.005

≤ 0.05

≤ 0.005

≤ 0.05

≤ 0.005

≤ 0.005

≤ 0.10

≤ 0.10