Galvanized Steel Sheets and Coils

Category of Galvanized Steel

Grade and Introduction of Galvanized Steel


【Commercial Galvanized steel 】

 Mechanical properties of hot-dip Galvanized steel sheets and coils

Table One

Grade

Tension Test

Lower Yield Strength

Rel

Tensile Strength

Rm

Elongation  %  L0=50mm,b=12.5mm (L0=2in,b=0.5in)

Mpa

KSI

Mpa

KSI

不小于

CSA

170~380

25~55

/

/

20

CSB

205~380

30~55

/

/

20

CSC

170~410

25~60

/

/

15

FSA、FSB

170~310

25~45

/

/

26

DDSA

140~240

20~35

/

/

32

DDSC

170~280

25~40

/

/

32

EDDS

105~170

15~25

/

/

40

SS33(SS230)

>=230

>=33

>=310

>=45

20

SS37(SS255)

>=255

>=37

>=360

>=52

18

SS40(SS275)

>=275

>=40

>=380

>=55

16

SS50(SS340)-1

>=340

>=50

>=450

>=65

12

SS50(SS340)-2

/

/

SS50(SS340)-3

>=480

>=70

SS50(SS340)-4

>=410

>=60

SS55(SS380)

>=380

>=55

>+480

>=70

11

SS80(SS550)-1

>=550

>=80

>=570

>=82

/

SS80(SS550)-2

Mechanical properties of hot-dip Galvanized steel sheets and coils

Table Two

Grade

Tension Test

 

Yield Strength      Mpa

Tensile Strength

Rm      Mpa

Elongation A80  %,Min.

DX51D

/

270~500

22

DX52D

140~300

270~420

26

DX53D

140~260

270~380

30

DX54D

120~220

260~350

36

S220GD

>=220

>=300

20

S250GD

>=250

>=330

19

S280GD

>=280

>=360

18

S300GD

>=300

>=380

17

S320GD

>=320

>=390

17

S350GD

>=350

>=420

16

S550GD

>=550

>=560

/

        Mechanical properties of Hot dip galvanized steel sheets and coils

                                        Table Three

Grade

Tension Test  a

Tensile Strength

ReH

Mpa

Lower Yield Strength

Rm Mpa

Elongation A50%

b=25mm

Min.

Min.

0.4

0.4~0.6

0.6~1.0

1.0~1.6

1.6~2.5

2.5

SGCC

SGCD1

270

34

36

37

38

SGCD2

270

36

38

39

40

SGCD3

270

38

40

41

42

SGC340

245

340

20

20

20

20

20

20

SGC400

295

400

18

18

18

18

18

18

SGC440

335

440

18

18

18

18

18

18

Mechanical Properties required about Hot rolled substrate Galvanized steel sheets and coils as the table below:

Grade

Tension Test 

Yield StrengthReH

Mpa

Tensile Strength

Rm

Mpa

ElongationA50,%

B=25mm

Min.

 

 

SGHC

SGH340

245

340

≥20

SGH400

295

400

≥18

SGH440

335

440