SA387 Gr.22 Cl.2 Pressure Vessel Steel
Products Description
SA387Gr22CL2 is a chromium-molybdenum alloy steel plate for pressure vessels specified in American standards (ASTM/ASME). It belongs to the SA-387 series and is mainly used in the manufacture of equipment operating under harsh environments such as high temperature, high pressure and corrosion.
Nomenclature: "SA" represents the prefix for specific materials in the ASME standards; "387" is the standard number, indicating that this steel plate belongs to Section 387 of the ASME Code; "Gr22" denotes the chemical composition grade of the steel plate, meaning it contains chromium (Cr) and molybdenum (Mo) in specific proportions; "CL2" typically indicates that the steel plate has undergone specific heat treatment during the manufacturing process or meets a certain quality grade.
Properties
Chemical Requirements
| C | Mn | P | S | Si | Cr | Mo | V |
|---|---|---|---|---|---|---|---|
| 0.05 – 0.15 | 0.30 – 0.60 | 0.025 | 0.025 | 0.50 | 2.00 – 2.50 | 0.90 – 1.10 | – |
Tensile requirements
| Yield MPA | Tensile MPA | Elongation (50mm) | Reduc'n of area |
|---|---|---|---|
| 310 min | 515 – 690 | 18% min | 40% min |
What is the temperature range for SA 387 GR 11 Cl 2?
In the lower end of the temperature range SA 387 Gr 11 (1150 °F min tempering temperature) , and SA 387 Gr 22 (1250 °F min tempering temperature) are used. These grades can be specified in either class 1 or 2 and can also be provided in the Normalized & Tempered or Quenched and Tempered.
What is the hardness of SA 387 GR 22 Class2?
Hardness Requirements:
Brinell Hardness (HBW): ≤ 220 HBW (standard requirement after normalization + tempering).
Typical Range: 180–210 HBW (actual measured values post-heat treatment).
about us
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