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430 Quality Sheet Specification
Zinc-iron alloy coated (galvannealed) low carbon steels for cold forming
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) low carbon steels for cold forming
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Nbmax. | Timax. | |
|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||
| TSG3109G | SCGA 270D | 430 | 0.008 | 0.25 | 0.025 | 0.02 | 0.04 | 0.10 |
- Chemical composition is not specified in customer specification. Limits given in this table are based on Erdemir practice for reference.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] t(thickness, mm) | Rm [N/mm2] | A(%) min. t(thickness, mm) | nort | rort | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||||
| 0.4≤t≤0.79 | 0.8≤t≤0.99 | A500.4≤t≤0.59 | A500.6≤t≤0.79 | A500.8≤t≤0.99 | min. | |||||
| TSG3109G | SCGA 270D | 430 | 135-225 | 125-215 | 270 min. | 39-49 | 40-50 | 41-51 | 0.2 | 1.2 min. |
- This grade is produced according to reference mechanical values above in line with agreements with customers.
- The mechanical properties are valid for a period of 12 months from the date on which the products are made available.
- Tensile test values apply to "longitudinal" test pieces