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4251 جودة مواصفات الورقة
Hot rolled unalloyed structural steels for manufacture of construction equipment, machines and various machine parts, general construction plates, road and railway vehicles
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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
التركيب الكيميائي (%)
| المعيار المكافئ | رقم جودة إرديمير | Cmax. | Mnmin. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | |
|---|---|---|---|---|---|---|---|---|---|
| المعيار | جودة | ||||||||
| 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.
الخواص الميكانيكية
| المعيار المكافئ | رقم جودة إرديمير | Re [N/mm2] | Rm [N/mm2] | A(%) min. t(thickness, mm) | ||
|---|---|---|---|---|---|---|
| المعيار | جودة | |||||
| 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