ASTM A387 Grade 22 (ASME SA387 Grade 22) is Chrom-Moly steel plate used for making boilers and pressure vessles designed for high temperature high pressure serivce, chrome content at 2.00% to 2.50%, and Moly 0.90% to 1.10% for SA387 GRADE 22 material.
The more content of chromium will provide better corrosion and oxidation resistance, ASTM A387 Grade 22 / ASME SA387 Grade 22 material could be used storage oil, gas, or other liquid for industries, and also compatible with sour services.
Refered Standards for ASTM A387 Grade 22 CL1, CL2
ASTM
A20/A20M: General requirements for pressure vessel plates.
A370: Test specification for mechanical properties of steel
A435/A435M: For straight-beam ultrasonic examination of steel plates
A577/A577M: For ultrasonic angle beam examination of steel plates
A578/A578M: For straight beam UT examination of rolled steel plates in special applications
A1017/A1017M: Specification for pressure vessle plates of alloy steel, chromium-molybdenum-tungsten
AWS Specification Welding Methods
A5.5/A5.5M: Low alloy steel electrodes for shield metal arc welding.
A5.23/A5.23M: Low alloy steel electrodes for fulxes for submerged arc welding.
A5.28/A5.28M: For gas shielded arc welding
A5.29/A5.29M: For flux cored arc welding.
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