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¿¹À­Ç¿¶È(MPa)

ü·þÇÇü·þÇ¿¶È(MPa)

É쳤ÂÊ(%)

GB/T 8163

10

335¡«475

≥205

≥24

20

410¡«550

≥245

≥20

Q345

490¡«665

≥325

≥21

ÅÆ ºÅ

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C

Si

Mn

P

S

Cr

Ni

Cu

GB/T 8163

10

0.07¡«0.14

0.17¡«0.37

0.35¡«0.65

≤0.035

≤0.035

≤0.15

≤0.25

≤0.25

20

0.17¡«0.24

0.17¡«0.37

0.35¡«0.65

≤0.035

≤0.035

≤0.25

≤0.25

≤0.25

Q345

0.12¡«0.20

0.20¡«0.55

1.20¡«1.60

≤0.045

≤0.045

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