We supply high quality ASME SA387 Gr 12 Class 2 and ASTM A387 Gr22 Class 2 chrome moly pressure vessel steel plates from various origin such as Korea, Japan, China, Belgium & Germany. A387-12-2 and SA387-22-2 are described as “Standard Specification for Pressure Vessel Plates, Chromium-Molybdenum Carbon Alloy Steel “.
Description
ASME SA387 Grade 22 Class 2
We supply ASME SA387 Grade 22 Class 2 plates to global fabricators serving the oil, gas and petrochemical industry.
These industries require a pressure vessel grade steel which works well in elevated temperatures and our material serves this purpose well. And with good corrosion and oxidation resistance, SA387 Grade 22 Class 2 plates are a good option for sour gas environments too.
Equivalents
| BS | EN | ASTM/ASME | DIN |
| 622-515B | 10CrMo910 | A/SA387-22-2 | 10CrMo910 |
Chromium & Molybdenum content (according to the ASME specification)
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
| A387 Grade 22 | 2.25% | 1.00% |
Tensile Requirements of Class 2 Plates
| Designation | Requirement | Grade 22 |
| A387 Grade 22 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 |
Chemical Requirements for ASME SA387 Grade 22 Alloy Steel Plates
| Element | Chemical Composition (%) | |
| SA387 Grade 22 | ||
| Carbon: | Heat Analysis: | 0.05 – 0.15 |
| Product Analysis: | 0.04 – 0.15 | |
| Manganese: | Heat Analysis: | 0.30 – 0.60 |
| Product Analysis: | 0.25 – 0.66 | |
| Phosphorus: | Heat Analysis: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulphur (max): | Heat Analysis: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Heat Analysis: | 0.50 max |
| Product Analysis: | 0.50 max | |
| Chromium: | Heat Analysis: | 2.00 – 2.50 |
| Product Analysis: | 1.88 – 2.62 | |
| Molybdenum: | Heat Analysis: | 0.90 – 1.10 |
| Product Analysis: | 0.85 – 1.15 |
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