牌 號

鎢 含 量

二氧化釷含量

雜質元素總含量

每種雜質元素含量

WTh7

≥98.91%

0.70-0.99%

≤0.10%

≤0.01%

WTh10

≥98.41%

1.00-1.49%

≤0.10%

≤0.01%

WTh15

≥97.91%

1.00-1.49%

≤0.10%

≤0.01%

WTh20

≥97.64%

1.99-2.5%

≤0.10%

≤0.01%

WTh30

≥96.68%

2.82-3.22%

≤0.10%

≤0.01%

WTh40

≥96.65%

3.90-4.20%

≤0.10%

≤0.01%