ASTM A387 Grade 91 Alloy Steel Sheets & Plates
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Product description
ASTM A387 Grade 91 steel sheets and plates are premium alloy steel products engineered for extreme operating conditions. Composed of a 9-12% chromium and molybdenum matrix, this material offers exceptional resistance to thermal creep, oxidation, and scaling at elevated temperatures. It is the industry standard for fabricating critical components in power generation and petrochemical facilities where structural integrity is paramount under sustained high-pressure loads.
Key Features
- High-Temperature Performance: Maintains mechanical strength and dimensional stability in environments exceeding 600°C.
- Creep Resistance: Optimized microstructure ensures long-term durability against deformation under constant stress.
- Weldability: Suitable for modern welding techniques with proper pre-heat and post-weld heat treatment protocols.
- Corrosion Resistance: Effective protection against high-temperature oxidation and sulfidation.
Applications
These plates are widely used in the construction of boiler drums, superheater headers, pressure vessels, heat exchangers, and reactor shells. They are essential in coal-fired power plants, nuclear facilities, and refineries for components exposed to high-temperature steam and hydrocarbons.
