ASTM A387 / ASME SA387 GRADE 11 Class 1 – Alloy Steel Plates

The pressure vessel plates made of ASTM A387 Grade 11 (identical with ASME SA-387 Gr. 11) are chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service. There are two classes available according to tensile strength levels: Class 1 and Class 2. The ASME SA-387/ ASTM A387 Gr.11 steel has the nominal composition of 1.25Cr-0.5Mo-Si with UNS designation number of K11789 and P number of 4.

What are ASTM A387 Alloy Steel Gr 11 Cl.1 Sheets?

ASTM A 387 Alloy Steel Gr Sheets and Plates are used in some typical applications such as Chemical and allied industries, Pressurized vessels, Heat exchangers, Ducting and pipe works, and Food. The essentials also come with these plates and sheets. The ASTM A387 Alloy Steel Grade 11 CL 1 Plate has very high oxidation and corrosion resistance due to the presence of chromium. Additionally, it has given better-annealed conditions corrosion resistance. Outstanding temperatures, tensile strength, and yield strength are provided by molybdenum content. These ASTM A387 Alloy Steel Gr 11 CL 2 Plates exhibit outstanding tensile strength, toughness, and hardness. It is typically utilized in environments with high temperatures.

SA387 GR 11 CLASS 1 Plate Specification :

Width: 1000mm-4500mm
Thickness: 5mm to 150mm
Length: 3000mm-18000mm
Supply Condition : As Rolled, Normalized Rolling, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or as per customer requirement.
Impact tested: -52° C
Process of Manufacturing: Hot-Rolled (HR)