牌號

FTiC-A

FTiC-B

FTiC-C

化學成分 %

總碳

≥18.0

≥18.0

≥18.0

游離碳

≤0.7

≤0.5

≤0.5

O

≤2

≤1.5

≤1.5

N

≤0.1

≤0.1

≤0.1

Fe

≤0.15

≤0.15

≤0.1

Al

≤0.01

≤0.01

≤0.01

Si

≤0.15

≤0.15

≤0.15

Ca

≤0.01

≤0.01

≤0.01

S

≤0.01

≤0.01

≤0.01

費氏粒度（還原態）(μm)

A級：≤0.8μm^±0.1

B級：≤1.0μm^±0.1

C級：≤1.5μm^-0.4