482 QualitySheet Specification

482 Quality Sheet Specification

Zinc-iron alloy coated (galvannealed) bake-hardening steels

Reproducible Letter Symbols --> GFR --> GFRD --> GFR
Alternatives1118 1218 1122 1222 1126 1226 1130 1230

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-iron alloy coated (galvannealed) bake-hardening steels

Chemical Composition (%)

Standard EquivalentErdemir Grade NoCmax.Mnmax.Pmax.Smax.Nbmax.Timax.
StandardQuality
TSG3109GSCGA 340BH4820.0080.700.080.020.040.05
  1. Chemical composition is not specified in customer specification. Limits given in this table are based on Erdemir practice for reference.

Mechanical Properties

Standard EquivalentErdemir Grade NoRe [N/mm2]Rm [N/mm2]A(%) min.rortBH2 [N/mm2] min.
StandardQuality
A80
TSG3109GSCGA 340BH482195-295340 min.34-411.4 min.30
  1. Tensile test values apply to "transverse" test pieces
  2. BH value is obtained at 170°C in 20 minutes.
  3. Intended BH2 value is 40 N/mm2 (4.1 kg/mm2).
  4. Mechanical properties are guaranteed for thickness d = 0.70 mm.
  5. The mechanical properties are valid for a period of 3 months from the date on which the products are made available.