Türkçe
العربية
4251 Quality Sheet Specification
Hot rolled unalloyed structural steels for manufacture of construction equipment, machines and various machine parts, general construction plates, road and railway vehicles
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.
Hot rolled unalloyed structural steels for manufacture of construction equipment, machines and various machine parts, general construction plates, road and railway vehicles
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmin. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||
| CSA G40.21-2013 | 350W | 4251 | 0.23 | 0.50 | 1.50 | 0.04 | 0.05 | 0.40 | 0.02 |
- Copper content shall be min 0.20% when Cu steel is specified.
- This grade is suitable for galvanizing.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] | A(%) min. t(thickness, mm) | ||
|---|---|---|---|---|---|---|
| Standard | Quality | |||||
| A501.8≤t≤19 | A20019.01≤t≤20 | |||||
| CSA G40.21-2013 | 350W | 4251 | 350 min. | 450-650 | 20 | 17 |
- Tensile test values apply to "transverse" test pieces
- Below 8 mm thickness, according to the item 8.3.1.1 of standart CSA G40.20, elongation value shall differ from the values given in the table