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1230 Quality Sheet Specification
Zinc-iron alloy coated (galvannealed) bake-hardening steels
Reproducible Letter Symbols --> GFR --> GFRD --> GFR
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 Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Nbmax. | Timax. | |
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||||
| EN 10346:2015 | HX300BD+ZF | 1230 | 0.11 | 0.80 | 0.12 | 0.025 | 0.50 | 0.01 | 0.09 | 0.12 |
- There are no chemical footnotes.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] | A(%) min. t(thickness, mm) | BH2 [N/mm2] min. | |||
|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||
| A800.4≤t≤0.5 | A800.51≤t≤0.7 | A800.71≤t≤2 | ||||||
| EN 10346:2015 | HX300BD+ZF | 1230 | 300-360 | 400-480 | 22 | 24 | 26 | 30 |
- Tensile test values apply to "transverse" test pieces
- Absence of stretcher strains marks is valid if storage temperature is below 50° C.
- Guarantee periods of absence of stretcher strains marks and mechanical properties are 6 months. The period begin on the date on which products are made available.