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251 Quality Sheet Specification
High strength steels for cold forming
Reproducible Letter Symbols --> CCR --> CCRD --> CCR
AlternativesThere is no alternative to this sheet.
Flat / Cold Rolled
Cold rolled coils or flat steel products are produced by rolling hot rolled flat steels without a heat treatment operation in a thickness range of 0.20 to 2.00mm. While the product’s physical properties are all homogeneous along the strip, surface flatness, width and thickness values have fulfilled expectations at the top level.
High strength steels for cold forming
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Vmax. | Nbmax. | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||
| WSB-M1A215-F1 | GRADE 300 | 251 | 0.10 | 0.90 | 0.025 | 0.02 | 0.03 | 0.06 | 0.08 |
- Chemical composition is not specified in customer specification. Limits given in this table are based on Erdemir practice for reference.
- Deoxidation method of this products is fully-killed. Minimum aluminium to nitrogen ratio is 2:1.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] | A(%) min. | |
|---|---|---|---|---|---|
| Standard | Quality | ||||
| A50 | |||||
| WSB-M1A215-F1 | GRADE 300 | 251 | 300-400 | 400 min. | 23 |
- The mechanical properties are valid for a period of 6 months from the date on which the products are made available.
- Tensile test values apply to "longitudinal" test pieces