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S550GD

Definition

Structural steel (non-alloyed high-grade steel) S550GD is a structural steel with a yield point of 550 N/mm², which has excellent corrosion resistance, forming, coating and other properties.

S550GD is available with the following hot dip coatings: S550GD+Z (galvanized), S550GD+ZF (galvanized-iron), S550GD+ZA (galvanized-aluminum), S550GD+AZ (aluminum-zinc)

Chemical Composition Of S550GD (Casting Analysis)

DesignationChemical composition
% by mass
max.
Steel gradeSymbols for the types of available coatingsCSiMnPS
Steel nameSteel number
S550GD1.0531+Z,+ZF,+ZA,+ZM,+AZ0,200,601,700,100,045

Mechanical Properties Of S550GD (Longitudinal)

DesignationMechanical properties
Steel gradeSymbols for the types of available coatingsProof strength
Rp0,2
a
MPad
min.
Tensile strength
Rm
b
MPad
min.
Elongation
A80
c
%
min.
Steel nameSteel number
S550GD1.0531+Z,+ZF,+ZA,+ZM, +AZ550560-

Equivalent material (for reference only)

ASTM SS250, ASTM SS255, ASTM SS275, ASTM HTS, DIN ST50, DIN S550GD, ISO 550, DIN 1.0531, etc.

Application

Can be used in the field of construction: building panels, buildings, steel plates and bridges, in the field of factories and machinery: strips, equipment belts, factory infrastructure, household goods, furniture, ships, automobile production, etc.

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