low alloy high strength cold continuous rolled steel strip-九游会亚洲

products > low alloy high strength cold continuous rolled steel strip

low alloy high strength cold continuous rolled steel strip

1 main use

mainly used in structural parts and reinforcements.

2 grades and standards

grade hc260la~ hc500la; implementation standard: q/bqb 419-2009

3 product supply technical conditions

thickness is 0.50mm~2.3mm

3.1 chemical composition





化学成分(熔炼分析)

% (质量分数)




牌号

c

si

mn

p


s

alt

ti a

nb a



不大于

不大于

不大于

不大于


不大于

不小于

不大于

不大于













hc260la

0.10

0.5

0.6

0.025


0.025

0.015

0.15


hc300la

0.10

0.5

1.0

0.025


0.025

0.015

0.15

0.09


hc340la

0.10

0.5

1.1

0.025


0.025

0.015

0.15

0.09


b340la

0.12

-

1.0

0.030


0.030

0.020

-

0.09


hc380la

0.10

0.5

1.6

0.025


0.025

0.015

0.15

0.09


hc420la

0.10

0.5

1.6

0.025


0.025

0.015

0.15

0.09


b410la

0.20

-

2.0

0.030


0.030

0.020

-

0.09


hc460la

0.10

0.5

1.8

0.025


0.025

0.015

0.15

0.09


hc500la

0.12

0.6

1.7

0.025


0.025

0.015

0.15

0.09

 

3.2力学性能





拉伸试验a, b








断后伸长率


牌号

屈服强度

抗拉强度



%



mpa

mpa



不小于






a80mm

(lo=50mm,b=25mm)


hc260la c

260~330

350~430


26

-


hc300la c

300~380

380~480


23

-


hc340la c

340~420

410~510


21

-


b340la d

340~460

≥440


-

22


hc380la c

380~480

440~560


19

-


hc420la c

420~520

470~590


17

-


b410la d

410~560

≥590


-

16


hc460la c

460~560

560~680


15

-


hc500la c

500~600

560


14

-

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