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S320GD

Grade S320GD is structural steel with a yield strength of at least 320 MPa. S320GD is available in the following hot dip coatings: S320GD+Z (galvanized), S320GD+ZF (galvanized-iron), S320GD+ZA (galvanized-aluminum), S320GD+AZ (aluminum-zinc), S320GD+AS (galvanized-iron) aluminum silicon).

Features

1) Applies to upper yield strength ReH.
2) Except for S550GD steel grade, the span of tensile strength is 140 MPa.
3) Depending on the product thickness, the minimum elongation at break decreases as follows: 0.50 mm < t < 0.70 mm (minus 2 units), 0.35 mm < t < 0.50 mm (minus 4 units) and t < 0.35 mm (minus 7 units) units).

Chemical Composition Of S320GD (Casting Analysis)

DesignationChemical composition
% by mass
max.
Steel gradeSymbols for the types of available coatingsCSiMnPS
Steel nameSteel number
S320GD1.0250+Z,+ZF,+ZA,+ZM,+AZ,+AS0,200,601,700,100,045

Mechanical Properties Of S320GD (Longitudinal)

DesignationMechanical properties
Steel gradeSymbols for the types of available coatingsProof strength Rp0,2 a
MPad min.
Tensile strength Rm b
MPad
Elongation A80 c % min.
S320GD1.0250+Z,+ZF,+ZA,+ZM,+AZ,+AS32039017

Equivalent material (for reference only)

ASTM SS255, ASTM SS275, ASTM SS250, ASTM SS550, etc.

Types of S320GD+Z galvanized sheet

  • Hot dip galvanized steel sheet
  • Alloyed galvanized steel sheet
  • Electro-galvanized steel sheet
  • Single-sided and double-sided differential galvanized steel
  • Alloy, composite galvanized steel sheet
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