G450 Steel

G450 steel is a structural steel grade according to the Australian AS 1397 standard. Its minimum yield strength is 450 MPa and the carbon content is 0.2, which is a low-carbon steel. When using steel in the construction field, pay attention to the yield strength. The steel will deform when it is higher than 450 MPa.

G450 steel can be applied to Z, ZF, ZA, ZM, AZ, AM hot dip metallic coatings.

G450 Requirements for Chemical Composition

Steel grade designation
AS 1397
Chemical composition (cast analysis), % max.
CarbonManganesePhosphorusSulfur
G4500.21.20.040.03

G450 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
G450450480109904t

G450 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
G4500t2t2t2t3t2t2t
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