ASTM A387 / ASME SA387 GRADE 91 Class 1 - Alloy Steel Plates

ASME SA 387 91 CL 2 Alloy Steel plates, ASTM A387 Gr. 91 Class 2 Chrome Moly Plate Suppliers, Exporters and Stockists, Alloy Steel chrome molybdenum Grade 91 Class 2 A387 Plates Dealer, A387GR91CL2 Cr-Mo Steel Plates Distributors, SA 387 Gr. 91 Cl. 2 Pressure Vessel steel plates Stockholders in Mumbai

SA 387 GR 91 Cl 1 Alloy Steel Plates

Amardeep Steel is a prominent provider offering a diverse array of products, encompassing SA 387 Gr. 91 Cl. 2 Plates, to its global clientele. Operating from Mumbai, we excel as manufacturers, traders, and suppliers of top-tier steel products renowned for their exceptional quality.

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.


When the demand calls for exceptional high-temperature resistance and impeccable anti-corrosion characteristics, directing attention towards ASME SA387 Grade 91 Steel Plate is a prudent choice. This material stands as a stalwart within the realm of pressure vessel grade steel, a preference echoed by fabricators catering to the oil and gas sector.

Notably, the merits of SA387 Grade 91 extend beyond its fundamental attributes. Thanks to its remarkable corrosion-resistant properties, this material emerges as a viable contender for deployment in challenging sour service environments. Its exceptional weldability enhances its practicality, while its inherent heat-resistant qualities augment its versatility, rendering it a preferred steel variant across diverse applications.

The infusion of molybdenum and chromium into the composition of ASME SA387 Grade 91 endows it with remarkable corrosion resistance and unparalleled capacity to endure elevated temperatures, respectively. ASME SA387 standard plates find their natural habitat within the arsenal of leading fabricators, who, in turn, serve as vital suppliers to the oil and petrochemical industry. The gamut of applications for ASME SA387 is extensive and includes pressurized vessels, industrial boilers, heat exchangers, and pipeline infrastructure, underscoring its indispensable role in critical industrial segments.

Alloy Steel chrome molybdenum Grade 91 Class 1 Plates 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)

ASTM A387 / ASME SA387 GRADE 91 Class 1 Chemical Composition

BS EN ASTM/ASME DIN
- 10CrMoVNb9-1 A387-91-2 -

ASTM A387 / ASME SA387 GRADE 91 Class 1 Mechanical Properties

Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min
415 585 20

Equivalent Grades for Sa387 Alloy Steel Gr.91 Cl 1 Sheets & Plates

BS ASTM/ASME UNS EN DIN
A387 / SA 387 K90901 10CrMoVNb9-1

Tensile Requirements for ASME SA387 Grade 91 Alloy Steel Plates Class 1 Plates

Designation: Requirement: Grade 91
SA387 Grade 91 Tensile strength, ksi [MPA] 85 to 110 [585 to 760]
  Yield strength, min, ksi [MPa]/(0.2% offset) 60 [415]
  Elongation in 8 in. [200mm], min % ...
  Elongation in 2 in. [50mm], min, % 18
  Reduction of area, min % ...

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