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Description: Pressure Vessel Plate of ASTM A302 is manganese-molybdenum and manganese-molybdenum-nickel alloy steel intended particularly for welded boilers and other pressure vessels.Pressure Vessel Plate of ASTM A302 is available in four grades having strength level ...
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Pressure Vessel Plate of ASTM A302 is manganese-molybdenum and manganese-molybdenum-nickel alloy steel intended particularly for welded boilers and other pressure vessels.
Pressure Vessel Plate of ASTM A302 is available in four grades having strength levels: Grade A, Grade B, Grade C & Grade D. The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirement. The minimum thickness is limited to 0.25 in.[6.5mm].
ASTM A299 steel chemical components:
| chemical components | heat analysis/ product analysis |
thickness | Grade A | GradeB | Grade C | Grade D |
|---|---|---|---|---|---|---|
| mm | ||||||
| C ≤ | heat analysis | ≤25 | 0.2 | 0.2 | 0.2 | 0.2 |
| product analysis | 25~50 | 0.23 | 0.23 | 0.23 | 0.23 | |
| ＞50 | 0.25 | 0.25 | 0.25 | 0.25 | ||
| Mn ≤ | heat analysis | - | 0.95~0.13 | 1.15~1.50 | 1.15~1.50 | 1.15~1.50 |
| product analysis | - | 0.87~1.41 | 1.07~1.62 | 1.07~1.62 | 1.07~1.62 | |
| P ≤ | heat analysis | - | 0.035 | 0.035 | 0.035 | 0.035 |
| S ≤ | product analysis | - | 0.04 | 0.035 | 0.035 | 0.035 |
| Si ≤ | heat analysis | - | 0.15~0.40 | 0.15~0.40 | 0.15~0.40 | 0.15~0.40 |
| product analysis | - | 0.03~0.45 | 0.13~0.45 | 0.13~0.45 | 0.13~0.45 | |
| Mo≤ | heat analysis | - | 0.45~0.6 | 0.45~0.6 | 0.45~0.6 | 0.45~0.6 |
| product analysis | - | 0.41~0.64 | 0.41~0.64 | 0.41~0.64 | 0.41~0.64 | |
| Ni ≤ | heat analysis | - | - | - | 0.40~0.70 | 0.70~1.00 |
| product analysis | - | - | - | 0.37~0.73 | 0.67~1.03 |
ASTM A302 steel mechanical property:
| ASTM A299 | Yield strength | Tensile strength | Elongation |
|---|---|---|---|
| Mp | Mp | % | |
| Grade A | 310 | 515-655 | 15 |
| Grade B | 345 | 550-690 | 15 |
| Grade C | 345 | 550-690 | 17 |
| Grade D | 345 | 550-690 | 17 |
ASTM A302 steel equivalent to
| ASTM | EN | DIN | AFNOR | UNI | BS |
|---|---|---|---|---|---|
| ASTM A302 Gr. A，B，C，D | 14CrMo45 | 13CrMo44 | 15CD 4.05 | 14CrMo46 | 620 Gr.27,31 |
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