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6421 Quality Sheet Specification
Low-carbon unalloyed mild steels for cold reducing with the obligation of batch annealing
AlternativesThere is no alternative to this sheet.
Flat / Hot Rolled
Flat steel products are obtained by heating semi-finished products with a rectangular cross-section (slab), which are produced by the continuous casting method, to a specific temperature and then rolling them, with thicknesses ranging from 1.40 to 25.40 mm and widths ranging from 700 to 2025 mm, produceed as coil or by cutting/slit-coiling flat steel products from coils.
Low-carbon unalloyed mild steels for cold reducing with the obligation of batch annealing
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmin. | Cmax. | Mnmin. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Almax. | Nmin. | Nmax. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||||
| DIN 1614-1:1986 | St22 | 6421 | 0.03 | 0.06 | 0.18 | 0.35 | 0.02 | 0.015 | 0.05 | 0.02 | 0.07 | 40.00 | 80.00 |
- Cu + Ni + Cr + Mo ≤ 0.25 %
- The maximum value for nitrogen does not apply if the chemical composition shows a minimum total aluminium content of 0.020%.
- Mechanical test is not carried out.
- Suitable for batch annealing after cold reducing.