312 QualitySheet Specification

312 Quality Sheet Specification

Zinc coated (galvanized) low carbon steels for cold forming

Reproducible Letter Symbols --> GZR --> GZRD --> GZR
AlternativesThere is no alternative to this sheet.

Flat / Galvanised

Galvanized flat steel is manufactured by zinc-coating both sides of cold rolled metal by hot-dipping process. After having coated the steel surface with zinc, the coating of the interface is transformed into an alloy of iron-zinc layer through heating by induction and the galvannealed steel is produced.

Zinc coated (galvanized) low carbon steels for cold forming

Chemical Composition (%)

Standard EquivalentErdemir Grade NoCmax.Mnmax.Pmax.Smax.Simax.Almin.Almax.CEmax.
StandardQuality
11-04-013XE3120.080.500.0250.0250.040.0050.070.16
  1. "CE = C % + (Mn+Si)/6 %" formula applies for carbon equivalent.
  2. The limits which are specified in the table are the limits of the customer's specifications.

Mechanical Properties

Standard EquivalentErdemir Grade NoRe [N/mm2]Rm [N/mm2]Re/RmA(%) min.n90r90
StandardQuality
A80min.
11-04-013XE312180-230300-3700.74 max.340.171.3 min.
  1. Tensile test values apply to "transverse" test pieces
  2. The mechanical properties are valid for a period of 6 months from the date on which the products are made available.
  3. Unless otherwise agreed, n value is taken between %10-20 elongation range.