ASTM A240 is a standard specification for stainless steel and hot-rolled steel plates, sheets, and strips developed by the American Society for Materials and Testing.304L is a material designation under this standard that refers to a low-carbon variant of 304 stainless steel with better intergranular corrosion resistance.
ASTM A240 304L Stainless Steel Features:
304L stainless steel has good corrosion resistance, especially under general atmospheric conditions, it can effectively resist the corrosion of most organic acids, inorganic acids and salt solutions.
Excellent oxidation resistance, thanks to its high content of nickel, makes it long-term use in high temperature environments without significant oxidation.
Good processing properties, including plasticity and weldability, enable it to be formed by a variety of methods such as cold and hot processing.
High strength and good mechanical properties, after proper heat treatment, it can obtain high strength and tensile properties.
The chemical composition of 304L stainless steel mainly includes carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium and nitrogen. Among them, the carbon content of each grade is the key to distinguish 304 steel and 304L steel. The content of these elements should be strictly controlled within the specified range to ensure that the material meets the standard requirements and has excellent corrosion resistance and processing properties.
Regarding the delivery status of 304L stainless steel, it is usually customized according to the needs of customers, which can be hot rolled, cold rolled or other specific treatment status. In addition, because it is an ultra-low carbon variant of 304, it does not need to be annealed under "welded" conditions, making it usable under severe corrosion conditions.
Due to its excellent corrosion resistance and processing properties, 304L stainless steel is widely used in many fields, including but not limited to: chemical industry: used to manufacture a variety of corrosion resistant equipment and containers. Construction: Used in the manufacture of interior decoration materials, sinks and pipes. Energy industry: Equipment manufacturing for nuclear power plants, petrochemicals and thermal power plants. Food processing equipment, especially in the fields of beer brewing, milk processing and wine manufacturing.
