ASTM A302 is a low alloy steel with specifications covering 4 different grades (A, B, C, D). Grades C and D contain the chemical composition Ni and have the same thickness. The yield strength and tensile strength of grade C are the same as those of grade C. Grade C is the same as Grade B, but Grade C has a higher elongation.
ASTM A302 is a low alloy steel with specifications covering 4 different grades (A, B, C, D). Grades C and D contain the chemical composition Ni and have the same thickness. The yield strength and tensile strength of grade C are the same as those of grade C. Grade C is the same as grade B, but grade C has a higher elongation. Specially manufactured for pressure vessels, boilers, storage tanks, and heat exchangers in petroleum and natural gas projects.
ASTM A302 pressure vessel steel plate Chemical Composition:
| ASTM A302 Chemical Composition | |||||||
|---|---|---|---|---|---|---|---|
| Steel Grade | The Element Max (%) | ||||||
| C | Si | Mn | P | S | Mo | Ni | |
| A302 Grade A | 0.20-0.25 | 0.13–0.45 | 0.87–1.41 | 0,035 | 0,035 | 0.41–0.64 | |
| A302 Grade B | 0.20-0.25 | 0.13-0.45 | 1.07-1.62 | 0.035 | 0.035 | 0.41-0.64 | |
| A302 Grade C | 0.20-0.25 | 0.13-0.45 | 1.07-1.62 | 0.035 | 0.035 | 0.41-0.64 | 0.37-0.73 |
| A302 Grade D | 0.20-0.25 | 0.13-0.45 | 1.07-1.62 | 0.035 | 0.035 | 0.41-0.64 | 0.67-1.03 |
ASTM A302 boiler steel plate Mechanical Property:
| Steel Grade | ASTM A302 Mechanical Property | |||
|---|---|---|---|---|
| Thickness | Yield | Tensile | Elongation | |
| A302 Grade A | mm | Min Mpa | Mpa | Min % |
| 6-50 | 310 | 515-655 | 19% | |
| 50-200 | 310 | 515-655 | 15% | |
| A302 Grade B | 6-50 | 345 Mpa | 550-690 Mpa | 18% |
| 50-200 | 345 Mpa | 550-690 Mpa | 15% | |
| A302 Grade C | 6-50 | 50 [345] | 80-100kis [550-690]Mpa | 17% |
| 50-200 | 20% | |||
