G300 Steel

G300 steel is a Metallic Coated structural steel in the AS 1397 standard, and the minimum yield strength is 300 MPa. G300 steel is used for roofing, cladding and light steel structure.

The common hot-dip metallic coated of G300 steel is ZINCALUME® and galvanized.

G300 Requirements for chemical composition

Steel grade designation
AS 1397
Chemical composition (cast analysis), % max.
CarbonManganesePhosphorusSulfur
G3000.31.60.10.035

G300 Mechanical property requirements

Steel grade
designation
Longitudinal tensile testTransverse bend test
Min. yield
strength
MPa
min. tensile
strength
MPa
Min.elongation,% Angle of bend degreesDiameter of mandrel in terms of test piece thickness (t)
Lo = 50 mmLo = 80 mm
G3003003402018180t

G300 Coating Adhesion (180° bend test) requirements

Steel grade designationDiameter of mandrel in terms of thickness of product (t)
Coating class
"Z", "ZA", "ZF" and "ZM""AZ" and "AM"
Z100,
ZA90
ZF80
ZF100
Z200,
ZA135,
ZA180,
ZM90,
ZM120,
ZM150,
ZM180
Z275,
ZA225,
ZA275,
ZM220,
ZM275
Z350,
ZA350,
ZM350
Z450,
ZA450,
ZM450
Z600AZ150,
AM100,
AM125,
AM150
AZ200,
AM175,
AM200
AM225
G30000ttt2ttt
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