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6624 Quality Sheet Specification
Low-carbon unalloyed mild steels for cold reducing with the obligation of batch annealing
Reproducible Letter Symbols --> HRP --> HRPKK --> HRU --> HRUKK --> KRKK --> L --> LKK --> LP --> LPKK --> LR --> LRKK --> R --> RD --> RKK --> RP --> RPD --> RPKK --> THRU --> TR --> TRKK --> TR
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 | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Nmax. | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||
| DIN 1614-1:1986 | St22 (MOD) | 6624 | 0.08 | 0.40 | 0.025 | 0.025 | 0.03 | 0.02 | 120.00 |
- The chemical analysis which contains 10-40 ppm boron, is composed according to the customer's request.
- 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%.
- Al value is the aimed value.
- Mechanical test is not carried out.
- Suitable for batch annealing after cold reducing.
Flat / Plate
Heavy plate products are obtained by rolling semi-finished products with a rectangular cross-section (slab) produced by the continuous casting method to a specific temperature, with thicknesses ranging from 6.00 to 200.00 mm and widths ranging from 1000 to 3600 mm.
Low-carbon unalloyed mild steels for cold reducing with the obligation of batch annealing
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Nmax. | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||
| DIN 1614-1:1986 | St22 (MOD) | 6624 | 0.08 | 0.40 | 0.025 | 0.025 | 0.03 | 0.02 | 120.00 |
- The chemical analysis which contains 10-40 ppm boron, is composed according to the customer's request.
- 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%.
- Al value is the aimed value.
- Mechanical test is not carried out.
- Suitable for batch annealing after cold reducing.