SA 387 GR.22 CL.1/2 Plates Features

• » Elite 2.25Cr-1Mo Composition: Engineered with a high concentration of Chromium and Molybdenum to deliver maximum thermal stability and corrosion resistance in extreme service environments.
• » Outstanding Creep-Rupture Strength: The 1% Molybdenum content provides industry-leading resistance to slow plastic deformation (creep), essential for high-pressure vessels operating at temperatures up to 600°C.
• » Robust HTHA Resistance: Specifically formulated to resist High-Temperature Hydrogen Attack (HTHA), making it the primary choice for hydro-processing and hydro-cracking units in refineries.
• » Enhanced Oxidation Stability: The 2.25% Chromium content forms a resilient protective layer, shielding the material from atmospheric oxidation and corrosive chemical process streams.
• » Optimized for Heavy-Wall Fabrication: Maintains uniform metallurgical properties even in extremely thick sections, supporting the construction of large-scale reactors and high-pressure steam headers.
• » Dual-Class Strength Flexibility: Available in Class 1 for superior ductile performance and Class 2 for higher allowable design stresses, allowing for leaner and more efficient engineering.
• » Superior Weld Integrity: Despite its high alloy content, the plate exhibits excellent weldability when used with proper pre-heat and post-weld heat treatment (PWHT) protocols.
• » Low Temper Embrittlement Susceptibility: Carefully controlled chemistry ensures the material remains tough and ductile throughout its service life, even after long-term exposure to high heat.