ASTM A240 Type 904L Bolt, Nuts, Washers Manufacturer & Supplier in India

ASTM A240 Type 904L, ASTM A240 Type 904L Bolt, Nuts, ASTM A240 Bolt Manufacturer in India – Ananka Group

ASTM A240 Type 904L is a specification for stainless steel plates, sheets, and strips designed for applications requiring exceptional corrosion resistance, especially in aggressive environments such as those involving sulfuric and phosphoric acids. Type 904L is an austenitic stainless steel with high alloy content, including chromium, nickel, and molybdenum, making it suitable for use in chemical processing, petrochemical, and marine industries where superior performance is required.

ASTM A240 Type 904L: Composition and Characteristics

ASTM A240 Type 904L stainless steel contains higher levels of chromium (19-23%), nickel (23-28%), and molybdenum (4-5%) compared to other stainless steels. It also includes a small amount of copper (1-2%), which enhances its resistance to sulfuric acid. This high alloy content gives it excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-rich and acidic environments.

Benefits of ASTM A240 Type 904L Stainless Steel:

Outstanding Corrosion Resistance: Type 904L is highly resistant to a wide range of corrosive media, including sulfuric acid, phosphoric acid, and chlorides, making it ideal for use in environments where other stainless steels might fail.

Resistance to Pitting and Crevice Corrosion: The high levels of chromium, nickel, and molybdenum provide exceptional resistance to localized corrosion such as pitting and crevice corrosion, especially in chloride-containing solutions.

Good Weldability and Formability: Despite its high alloy content, Type 904L retains good ductility and formability, allowing it to be shaped and welded for use in complex components and structures.

Non-Magnetic: In its annealed condition, Type 904L is non-magnetic, which can be advantageous in applications where magnetic properties could cause interference or other issues.

Common Applications:

• Chemical processing equipment, including acid tanks, heat exchangers, and reaction vessels
• Petrochemical industry components exposed to corrosive gases and liquids
• Desalination plants and seawater handling systems
• Pharmaceutical manufacturing equipment
• Pulp and paper industry machinery

ASTM A240 Type 904L stainless steel is an ideal choice for highly corrosive environments, offering superior performance compared to lower alloyed stainless steels. Its exceptional resistance to acids and chlorides makes it suitable for critical applications where durability and reliability are paramount

ASTM A240 Type 904L Chemical Composition