ASTM A240 F904L Flanges are made from the material grade 904L, which is a type of austenitic stainless steel that has better corrosion resistance than standard 304 grade. The 'F' in ASTM A240 F904L indicates that these flanges are of 'fashioned' or 'forged' type.

Here are some characteristics and uses:

Characteristics:
1.High Corrosion Resistance:
2. Good Fabrication Properties:
3. Low Carbon Content:
4. Aesthetic Appearance:
5. Versatility:

The ASTM A240 standard covers the specifications for the types of stainless steel plates, sheets, and strips of sheet metal made of austenitic stainless steel. This includes F904L grade, which is often specified for its excellent corrosion resistance and high temperature strength.

When specifying an ASTM A240 F904L Flange, you should consider factors like pressure rating, size, and the specific application requirements to ensure the best fit and performance.