지붕 재질 알루미늄 아연 도금 강철 코일

Chemical Composition

GRADE

C

Si

Mn

P

S

Ti

SGCC/DX51D+Z

≤0.10

≤0.50

≤0.60

≤0.10

≤0.030

≤0.020

DX52D+Z

≤0.10

≤0.50

≤0.60

≤0.10

≤0.030

≤0.020

SGCD/DX53D+Z

≤0.10

≤0.30

≤0.50

≤0.05

≤0.030

≤0.020

SGCE/DX54D+Z

≤0.10

≤0.30

≤0.30

≤0.03

≤0.020

≤0.020

DX56D+Z

≤0.10

≤0.30

≤0.30

≤0.03

≤0.020

≤0.020

Structural

≤0.20

≤0.60

≤1.70

≤0.10

≤0.045

Mechanical Properties

GRADE

Yield Strength MPa

Tensile Strength MPa

Elongation %

SGCC(DX51D+Z)

≥205

≥270

-

SGCD(DX53D+Z)

-

≥270

38

SGCE(DX54D+Z)

-

≥270

40

DX56D+Z

-

≥270

42

GRADE

Yield Strength MPa

Tensile Strength MPa

Elongation %

S220GD

≥220

≥300

≥20

S250GD

≥250

≥330

≥19

S280GD

≥280

≥360

≥18

S320GD

≥320

≥390

≥17

S350GD

≥350

≥420

≥16