mild carbon steel for construction h beam hot rolled q235 q345 ss400 ss490

Trade

Mark

Tensile Test

Impact Test

Steel Thickness

mm

Yield

Strength

Mpa

Tensile Strength

Mpa

Steel

Thickness

mm

Extensibility

%

Temprature

°C

Impact Energy

Q235A

≤16

≥235

375-500

≤16

≥36

Q235B

>16-40

≥225

>16-40

≥25

20

≥27

QQ235C

>40-60

≥215

>40-60

≥24

0

Q345A

470-630

≥21

Q345B

≤16

≥345

≥21

20

≥34

Q345C

>16-35

≥325

≥22

0

Q235qC

≤16

≥235

375-390

≥26

0

>16-35

≥225

>35-50

≥215

Q345qC

≤16

≥345

470-510

≥21

0

>16-35

≥325

≥20

>35-50

≥315

≥20

SS400

≤16

≥245

400-510

≥21

>5,≤16

≥17

>16≤40

≥235

>16,≤50

≥21

SS490

≤16

≥285

490-610

≤5

≥19

>5.≤16

≥15

>16≤40

≥275

>16,≤40

≥19