AISI 304LN Stainless Steel Chemical Composition Properties, Grades, Charts and Pdf

The Steel Industry Standard (AISI) classification 304L is a moderate-carbon modification of 304 grade stainless steel that improves its weldability and resistance to specific corrosion types. Advanced alloys meet the chemical composition requirements usually with the use of chromium and nickel, manganese and strength for resistance against corrosion, oxidation, and various chemicals. Chrome covers a wide variety of comprehensive charts and PDF documents, with a view to making the task easier for engineers and processors by providing more straightforward access to grades, chemical compositions and mechanical properties of the material. The contrast can be summarized in the following: high corrosion resistance, suitability for welding, ability to withstand various conditions, the ease of manufacture and the wide availability. However, the weak point of this material might be pitting corrosion in chloride rich settings, limited high temperature strength when compared to other steel grades of the same family, the possibility of sensitizing the material during welding if it is not properly controlled as well as the comparatively higher cost as compared to some other materials.

AISI 304Ln Austenitic Stainless Steel Chemical Composition And Grade Table

The AISI 304LN austenitic stainless steel chemical composition and grade table that gives detailed information on the material to designers and fabricators. The commonly used format for this table compares the percentage of various crucial elements like chromium, nickel, carbon, and carbon, which are among the most significant structural contributors in understanding the characteristics of the material. In addition, it classifies grades by the extent of their mechanical properties, corrosion-resistivity and appropriateness for specific purposes. Access to this table eliminates the arduous task of material selection process, hence clarifying the grade of material suitable for distinctive engineering applications. It is of great significance to the design process as a source of information and also a reference for making sure the design projects meet their requirements and performance expectations.

AISI 304Ln Austenitic Stainless Steel
Elements Cr Ni Mn Si N P C S Fe
Min (%) 18 8 - - 0.1 - - - -
Max (%) 20 12 2 1 0.16 0.045 0.03 0.03 Rem

The Advantages and Disadvantages of AISI 304Ln Austenitic Stainless Steel


  • Corrosion Resistance: Plays out an excellent corrosion, meaning usefully in many types of conditions, such as marine and chemical.

  • High Strength: Having a high tensile and yield strength increases the material's durability and structural stability at end in critical power applications.

  • Elevated Temperature Performance: Capable of retaining the good mechanical properties when temperature is increased and, therefore, appropriate for the application where high temperature conditions occur.

  • Weldability: Demonstrates good weldability characteristics which confirms that the material is workable and can be easily fabricated and joined.

  • Low Maintenance: The material has a strength that resists corrosion and staining which requires minimal maintenance, minimizing upkeep costs over the lifetime of the item.


  • Cost: Can be expensive compared to other materials which sometimes translates to high initial costs of the project.

  • Sensitivity to Chloride: Among these challenges, vulnerable to chloride-generated corrosion stress cracking in some particular environments, so we had to take this issue into account in chloride-rich applications.

  • Work Hardening: Subject to work hardening if cold working processes are involved that makes annealing or stress-relief treatment a necessity to regain ductility again.

  • Machinability: Exhibits inferior machinability compared to some other stainless steel grades which make tool wear and machining time quite long.

  • Magnetism: These materials might possess a minimum magnetic property as a result of austenitic structure and they could influence those fields requiring non-magnetic material.

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Frequently Asked Questions

What distinguishes AISI 304LN from other 304 types?

AISI 304LN exhibits maximum levels of carbon which is very low in this type of stainless steel ranging from 010 to 020. Added nitrogen (0.10 – 0.16 %) increases resistance to corrosion as well as boosts up manganese (0.03 %) to increase strength.

What is the chemical composition of the AISI 304LN?

AISI 304LN consists of chromium at 18-20% for enhanced corrosion resistance, nickel at 8-12% for better toughness and nitrogen at 0. There was 100% positive agreement in the use of the genomics assay for all cases, the maximum amount of contamination was 0. 03% carbon.

What is the advantage of using nitrogen in AISI 304LN?

Nitrogen also improves strength and corrosion resistance, especially with pitting and crevice corrosion.

What are typical uses of AISI 304LN?

AISI 304LN is used extensively in construction of cryogenic vessels & equipment’s and chemical processing & piping systems.