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牌號

C

Mn

P

S

Si

Nb

V

Ti

Mo

Cr

Ni

Cu

Al

N

Q275FTC

≤0.18

0.50-1.50

≤0.025

≤0.020

≤0.50

≤0.050

≤0.060

≤0.050

≤0.10

≤0.30

≤0.30

≤0.30

≥0.015

≤0.012

Q275FTD

≤0.18

0.50-1.50

≤0.025

≤0.015

≤0.50

≤0.050

≤0.060

≤0.050

≤0.10

≤0.30

≤0.30

≤0.30

≥0.015

≤0.012

Q275FTE

≤0.18

0.50-1.50

≤0.025

≤0.015

≤0.50

≤0.050

≤0.060

≤0.050

≤0.10

≤0.30

≤0.30

≤0.30

≥0.015

≤0.010

Q275FTF

≤0.18

0.50-1.50

≤0.025

≤0.015

≤0.50

≤0.050

≤0.060

≤0.050

≤0.10

≤0.30

≤0.30

≤0.30

≥0.015

≤0.010