ASME SA 387 GRADE 91 Class 1


SA 387 Gr. 91 Cl. 2 Plates hold particular significance in scenarios demanding elevated temperature endurance and robust anti-corrosion attributes. Notably, ASME SA 387 Grade 91 stands as a steel grade tailored for pressure vessel applications, with a predominant presence in the oil and gas industries. Its remarkable resistance to corrosion renders it a viable choice even within demanding sour service environments. With its impressive weldability and heat-resistant properties, this material emerges as a remarkably versatile steel variant, finding application across a wide spectrum of industrial contexts.

SA387/ASME SA 387 GRADE 22 Class 1Plate Specification


Specifications : ASTM A387 / ASME SA387
Thickness : 5mm-150mm
Width : 1000mm-4500mm
Length : 3000mm -18000mm
Hardness : As per ASME A & NACE MR 175
Impact Tested : Impact tested -52° C
Finish : Hot rolled plate (HR), Cold rolled sheet (CR)


Chemical Requirements


BS EN ASTM/ASME DIN
- 10CrMoVNb9-1 A387-91-2 -
The carbon content for plates over 5 in. (125 mm) in thickness is 0.17 max on product analysis.

Mechanical Composition


Tensile Strength Yield Strength Elongation in 50mm (%) Reduction of area in %
75-100 ksi, 515-690 MPa 45 Ksi, 310 MPa 18 45