ASTM A302/A302M
A302 steel plate is a type of alloy steel specified by ASTM A302/A302M, designed for welded boilers and pressure vessels. It is a manganese-molybdenum or manganese-molybdenum-nickel steel available in four grades (A, B, C, and D) with varying strength levels. It is commonly used in the oil, gas, and power generation industries for equipment like heat exchangers, storage tanks, and reactors.
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ASTM A302 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 |
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ASTM A302 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% | |||
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ASTM A302 Equivalent steel grade:
| Steel Grade | Europe | Germany | France | Italy | U.K. |
|---|---|---|---|---|---|
| ASTM A302 Gr. A,B | 14Cr Mo 45 | 13 Cr Mo 44 | 15 CD 4.05 | 14 Cr Mo 46 | 620 Gr.27,31 |
ASME SA302/SA302M
ASME SA302 is an alloy steel plate standard for manufacturing pressure vessels and boilers. These plates are used in various high-pressure applications, such as reactors, storage tanks, and power plant equipment. The "SA" designation means it is a standard adopted by the American Society of Mechanical Engineers (ASME) for its Boiler and Pressure Vessel Code.
Material: It is an alloy steel, with grades A, B, C, and D that are manganese-molybdenum and manganese-molybdenum-nickel steels.
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SA302 Grade A Chemical Composition
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SA302 Grade A Chemical Composition |
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25mm or under |
0.2 |
Heat Analysis |
0.95-1.30 |
Heat Analysis |
0.15-0.40 |
All thick |
0.035 |
|
25-50mm |
0.23 |
Product Analysis |
0.87-1.41 |
Product Analysis |
0.13-0.45 |
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over 50mm |
0.25 |
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Molybdenum max |
% |
Nickel max |
% |
Phosphorus |
% |
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Heat Analysis |
0.45-0.60 |
Heat Analysis |
… |
All thick |
0.035 |
|
|
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Product Analysis |
0.41-0.64 |
Product Analysis |
… |
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Mechanical Property of SA302 Grade A steel plate
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Mechanical Property of SA302 Grade A steel plate |
SA302 Grade A |
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Tensile strength, kis [MPa] |
75-95 [515-655] |
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Yield strength, min, kis [MPa] |
45 [310] |
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Elongation in 8 in. [200 mm], min, % |
15 |
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Elongation in 2 in. [50 mm], min, % |
19 |
Shipbuilding steel plate| Alloy steel plates| High strength plate| Carbon steel plate| Stainless steel plate
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Equivalent steel grade of SA302 Grade A
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Equivalent steel grade of SA302 Grade A |
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Europe |
Belgium |
Germany |
France |
Italy |
UK |
India |
Japan |
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Gr.27,31 |
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If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.
What material is SA302?
SA302 Grade B steel plates standard specification for pressure vessel plates in alloy steel, manganese molybdenum and manganese-molybdenum-nickel. SA302 Grade B steel plate shall be normally supplied in the as-rolled condition. Plates may be ordered normalized or stress relieved, or both.
What is the equivalent of SA302 Grade B?
ASME SA302GRB steel plate equal to 15CrMoR steel plate
SA302GrB steel plate is one kind Molybdenum alloy steels in ASME SA302/SA302M,SA302 Grade B is totally equal to A302 Grade B in ASTM A302/A302 steel specification.


| Grades Of Pressure Vessel Plates Supplied By GNEE | |||||
| ASTM | ASTM A202/A202M | ASTM A202 Grade A | ASTM A202 Grade B | ||
| ASTM A203/A203M | ASTM A203 Grade A | ASTM A203 Grade B | ASTM A203 Grade D | ASTM A203 Grade E | |
| ASTM A203 Grade F | |||||
| ASTM A204/A204M | ASTM A204 Grade A | ASTM A204 Grade B | ASTM A204 Grade C | ||
| ASTM A285/A285M | ASTM A285 Grade A | ASTM A285 Grade B | ASTM A285 Grade C | ||
| ASTM A299/A299M | ASTM A299 Grade A | ASTM A299 Grade B | |||
| ASTM A302/A302M | ASTM A302 Grade A | ASTM A302 Grade B | ASTM A302 Grade C | ASTM A302 Grade D | |
| ASTM A387/A387M | ASTM A387 Grade 5 Class1 | ASTM A387 Grade 5 Class2 | ASTM A387 Grade 11 Class1 | ASTM A387 Grade 11 Class2 | |
| ASTM A387 Grade 12 Class1 | ASTM A387 Grade 12 Class2 | ASTM A387 Grade 22 Class1 | ASTM A387 Grade 22 Class2 | ||
| ASTM A515/A515M | ASTM A515 Grade 60 | ASTM A515 Grade 65 | ASTM A515 Grade 70 | ||
| ASTM A516/A516M | ASTM A516 Grade 55 | ASTM A516 Grade 60 | ASTM A516 Grade 65 | ASTM A516 Grade 70 | |
| ASTM A517/A517M | ASTM A517 Grade A | ASTM A517 Grade B | ASTM A517 Grade E | ASTM A517 Grade F | |
| ASTM A517 Grade P | ASTM A517 Grade J | ||||
| ASTM A533/A533M | ASTM A533 Grade A Class1 | ASTM A533 Grade B Class1 | ASTM A533 Grade C Class1 | ASTM A533 Grade D Class1 | |
| ASTM A533 Grade A Class2 | ASTM A533 Grade B Class2 | ASTM A533 Grade C Class2 | ASTM A533 Grade D Class2 | ||
| ASTM A533 Grade A Class3 | ASTM A533 Grade B Class3 | ASTM A533 Grade C Class3 | ASTM A533 Grade D Class3 | ||
| ASTM A537/A537M | ASTM A537 Class1 | ASTM A537 Class2 | ASTM A537 Class3 | ||
| ASTM A612/A612M | ASTM A612 | ||||
| ASTM A662/A662M | ASTM A662 Grade A | ASTM A662 Grade B | ASTM A662 Grade C | ||
| EN | EN10028-2 | EN10028-2 P235GH | EN10028-2 P265GH | EN10028-2 P295GH | EN10028-2 P355GH |
| EN10028-2 16MO3 | |||||
| EN10028-3 | EN10028-3 P275N | EN10028-3 P275NH | EN10028-3 P275NL1 | EN10028-3 P275NL2 | |
| EN10028-3 P355N | EN10028-3 P355NH | EN10028-3 P355NL1 | EN10028-3 P355NL2 | ||
| EN10028-3 P460N | EN10028-3 P460NH | EN10028-3 P460NL1 | EN10028-3 P460NL2 | ||
| EN10028-5 | EN10028-5 P355M | EN10028-5 P355ML1 | EN10028-5 P355ML2 | EN10028-5 P420M | |
| EN10028-5 P420ML1 | EN10028-5 P420ML2 | EN10028-5 P460M | EN10028-5 P460ML1 | ||
| EN10028-5 P460ML2 | |||||
| EN10028-6 | EN10028-6 P355Q | EN10028-6 P460Q | EN10028-6 P500Q | EN10028-6 P690Q | |
| EN10028-6 P355QH | EN10028-6 P460QH | EN10028-6 P500QH | EN10028-6 P690QH | ||
| EN10028-6 P355QL1 | EN10028-6 P460QL1 | EN10028-6 P500QL1 | EN10028-6 P690QL1 | ||
| EN10028-6 P355QL2 | EN10028-6 P460QL2 | EN10028-6 P500QL2 | EN10028-6 P690QL2 | ||
| JIS | JIS G3115 | JIS G3115 SPV235 | JIS G3115 SPV315 | JIS G3115 SPV355 | JIS G3115 SPV410 |
| JIS G3115 SPV450 | JIS G3115 SPV490 | ||||
| JIS G3103 | JIS G3103 SB410 | JIS G3103 SB450 | JIS G3103 SB480 | JIS G3103 SB450M | |
| JIS G3103 SB480M | |||||
| GB | GB713 | GB713 Q245R | GB713 Q345R | GB713 Q370R | GB713 12Cr1MoVR |
| GB713 12Cr2Mo1R | GB713 13MnNiMoR | GB713 14Cr1MoR | GB713 15CrMoR | ||
| GB713 18MnMoNbR | |||||
| GB3531 | GB3531 09MnNiDR | GB3531 15MnNiDR | GB3531 16MnDR | ||
| DIN | DIN 17155 | DIN 17155 HI | DIN 17155 HII | DIN 17155 10CrMo910 | DIN 17155 13CrMo44 |
| DIN 17155 15Mo3 | DIN 17155 17Mn4 | DIN 17155 19Mn6 | |||







