ASTM A299 boiler steel plate pressure vessel steel sheet introduction:
ASTM A299 boiler steel plate pressure vessel steel sheets are manganese-silicon carbon steel plates for use in welded boilers and other pressure vessels. ASTM A299 boiler steel plate pressure vessel steel sheets are produced in two grades - A299 grade A and A299 grade B. The yield and tensile strength of A299 grade B steel is higher than A299 grade A steel.
The maximum thickness of ASTM A299 boiler steel plate pressure vessel steel sheet is limited only by the capacity of the composition to meet the specified mechanical property requirements. ASTM A299 boiler steel plate pressure vessel steel sheets under thickness of 50 mm are normally supplied in as-rolled condition. Plates may be ordered normalized or stress relieved, or both. ASTM A299 boiler steel plate pressure vessel steel sheets over 50 mm in thickness shall be normalized.
ASTM A299 boiler steel plate pressure vessel steel sheet chemical composition:
| Steel Grade | The Element Max (%) | |||||
| C | Si | Mn | P | S | Mo | |
| A299 grade A | 0.28-0.30 | 0.13-0.45 | 0.84 -1.62 | 0.035 | 0.035 | - |
| A299 grade B | 0.28-0.30 | 0.13-0.45 | 0.84 -1.62 | 0.035 | 0.035 | - |
ASTM A299 boiler steel plate pressure vessel steel sheet mechanical properties:
| Steel Grade | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| A299 grade A | t≦50 | 275-290 | 515-655 | 19 |
| 50<t≦200 | 275-290 | 515-655 | 19 | |
| A299 grade B | t≦50 | 310-325 | 550-690 | 19 |
| 50<t≦200 | 310-325 | 550-690 | 19 |
ASTM A299 steel equivalent grades:
Warning! Only for reference
| Steel Grade | Germany | Italy |
| A299 | T St E 255 | Fe 3602 KG |
ASTM A299 boiler steel plate pressure vessel steel sheet application:
ASTM A299 boiler steel plate pressure vessel steel sheets are widely used for manufacturing pressure vessels and boiler equipment.
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