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311 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 Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Nbmax. | Timax. | CEmax. | |
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||||
| WSD-M1A333 | A2 DC05 | 311 | 0.008 | 0.30 | 0.025 | 0.02 | 0.03 | 0.035 | 0.09 | 0.21 |
- "CE = C % + Mn/6 %." formula applies for carbon equivalent.
- The CE value which is specified in the table is the limit of the customer's specifications. The other limits are specified as reference value according to Erdemir manufacturing practice.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] t(thickness, mm) | Rm [N/mm2] | A(%) min. t(thickness, mm) | n90 | r90 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||
| 0.4≤t≤0.5 | 0.51≤t≤0.7 | 0.71≤t≤2 | A800.4≤t≤0.5 | A800.51≤t≤0.69 | A800.7≤t≤2 | min. | |||||
| WSD-M1A333 | A2 DC05 | 311 | 140-220 | 140-200 | 140-180 | 270-330 | 40 | 38 | 40 | 0.2 | 2 min. |
- Tensile test values apply to "transverse" test pieces
- The value of r90 only apply to products of thickness d ≥ 0.5 mm.
- The value of n90 only apply to products of thickness d ≥ 0.5 mm.
- The mechanical properties are valid for a period of 6 months from the date on which the products are made available.