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4044 Quality Sheet Specification
Hot rolled structural steels with improved formability
Reproducible Letter Symbols --> HRP --> HRPKK --> HRU --> HRUKK --> KRKK --> LP --> LPKK --> LR --> LRKK --> RD --> RKK --> RP --> RPD --> RPKK --> TRK
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.
Hot rolled structural steels with improved formability
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Nmax. | Cumax. | Bmax. | CEmax. | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||
| EN 10025-2:2019 | S275JRC+AR Mod CTA | 4044 | 0.21 | 1.50 | 0.035 | 0.035 | 0.03 | 120.00 | 0.55 | 8.00 | 0.40 |
- Suitable for galvanizing as "Category A". Category A contains Si ≤ 0.030% and Si+2.5P ≤ 0.090%.
- Max carbon equivalent (CE) is increased by 0.01 % for Si ≤ 0.25%, and 0.02 % for Si ≤ 0.04 %
- The maximum value for nitrogen does not apply if the chemical composition shows a minimum total aluminium content of 0.020%.
- Carbon equivalent, CEV (IIW) % = C + Mn / 6 + (Cr + Mo + V) / 5 + (Ni + Cu) / 15
- Boron content is limited to maximum 8 ppm for customer request.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] t(thickness, mm) | A(%) min. t(thickness, mm) | Impact | Bend (Transverse , BMD) t: thickness | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||||||||||||
| 1.39≤t≤2.99 | 3≤t≤20 | A801.39≤t≤2.99 | A803≤t≤20 | Temperature ( ° C)6≤t≤7.49 | KVC J min.6≤t≤7.49 | Temperature ( ° C)7.5≤t≤9.99 | KVC J min.7.5≤t≤9.99 | Temperature ( ° C)10≤t≤20 | KVC J min.10≤t≤20 | 90°1.39≤t≤1.5 | 90°1.51≤t≤2.5 | 90°2.51≤t≤3 | 90°3.01≤t≤4 | 90°4.01≤t≤5 | 90°5.01≤t≤6 | 90°6.01≤t≤7 | 90°7.01≤t≤8 | ||||
| EN 10025-2:2019 | S275JRC+AR Mod CTA | 4044 | 280-400 | 430-520 | 420-520 | 23-37 | 23-37 | 20 | 14 | 20 | 21 | 20 | 27 | R 2,0 mm | R 3,0 mm | R 4,0 mm | R 5,0 mm | R 8,0 mm | R 10,0 mm | R 12,0 mm | R 16,0 mm |
- Tensile test values apply to "transverse" test pieces
- The impact test is carried out only when specified at the time of enquiry and order and is not carried out for thickness thinner than 6 mm.
- The values are applicable for bend angles ≤90o