ASTM A299 specification covers manganese-silicon carbon steel plates for use in welded boilers and other pressure vessels. Plates under this specification are produced in two grades (A, B). Yield and tensile strength of Gr. B is higher than Gr. A. Due to high composition of C, Mn, Si. ASTM A299 is widely used for manufacturing pressure and boiler equipments. Plates of this standard under this thickness of 50 mm are normally supplied in as-rolled condition. Plates may be ordered normalized or stress relieved, or both. Plates over 50 mm in thickness shall be normalized.
Thickness: 5-100mm
Length: 1220-4200mm
Width: 5000-18000mm
Application: welded boiler steel plate, pressure vessel plate
Supplementary Technology: UT , AR( TMCP, N, Q+T, Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, HIC test, NDT ,PWHT, NACE0175, The Third Party Test (Such as SGS Test).
Surface: Coated or Shot Blasting and Painting
Delivery state: Hot Rolled, Cold Rolled
Steel Grade: Grade A, Grade B
ASTM A299 Chemical Composition:
| ASTM A299 Grade Chemical Composition | ||||||
|---|---|---|---|---|---|---|
| Steel Grade | The Element Max (%) | |||||
| C | Si | Mn | P | S | Mo | |
| A299 GR.A | 0.28-0.30 | 0.13-0.45 | 0.84 -1.62 | 0.035 | 0.035 | - |
| A299 GR.B | 0.28-0.30 | 0.13-0.45 | 0.84 -1.62 | 0.035 | 0.035 | - |
ASTM A299 Mechanical Property:
| Steel Grade | ASTM A299 Mechanical Property | |||
|---|---|---|---|---|
| Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % | |
| A299 GR.A | t≦50 | 275-290 | 515-655 | 19 |
| 50<t≦200 | 275-290 | 515-655 | 19 | |
| A299 GR.B | t≦50 | 310-325 | 550-690 | 19 |
| 50<t≦200 | 310-325 | 550-690 | 19 | |
ASTM A299 Equivalent Steel Grade:
| Steel Grade | Germany | Italy |
|---|---|---|
| A299 | T St E 255 | Fe 3602 KG |
