ASTM A299 Grade A Boiler Steel Plate
A299 GrA vessel steel plate is a pressure vessel steel designed for cryogenic use, this is achieved by reducing phosphorus and sulfur in the steel. A299 GrA boiler steel plate is a non-alloyed high quality steel that meets specific requirements for flat products for pressure equipment.
According to ASTM A299/A299M standard, the following technical conditions should be selected for pressure vessel steel plates A299 Grade A and A299 Grade B: S1. Vacuum treatment, S2. Product analysis, S3. Mechanical test specimens simulated for post-weld heat treatment, S4. Additional tensile test, S5. Charpy V-notch impact test, S6. Drop weight test, S7. High temperature tensile test.
A299 grade a Container steel plate chemical composition
| A299 Grade A Chemical Composition | ||||||
| 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 | - |
a204 Pressure Vessel Grade Steel Plate mechanical property
| rade | A299 Grade A Mechanical Property | |||
| Thickness | Yield | Tensile | Elongation | |
| A299 GR.A | mm | Min Mpa | Mpa | Min % |
| t≦50 | 275-290 | 515-655 | 19 | |
| 50<t≦200 | 275-290 | 515-655 | 19 | |
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