AISI 348 Stainless Steel Chemical Composition, Grades, Table and PDF Online

AISI 348 is a stainless steel type belonging to the class of austenitic stainless steels known for its outstanding corrosive resistance capability and high temperature strength properties. Its chemical composition is dominated by these four main elements, iron, chromium, nickel and, in trace amounts, others such as manganese, silicon, and carbon. This grade falls into the family of 300 series stainless steels and exhibit top-notch weldability and formability. AISI 348 has its deployment in many companies which are aerospace, chemical processing, and automotive engineering mainly because of the great ability it possesses to withstand extreme conditions. Engineers and designers frequently rely on extensive tables and PDF diagrams showing grades, chemical composition and mechanical properties of materials in order to make the best material selection for the projects in question.

AISI 348 Austenitic Stainless Steel Chemical Composition And Grade Table

AISI 348 is a type of austenitic stainless steel with the highest level of heat corrosion and oxidation resistance. The chemical composition of stainless steel usually includes elements like chromium, nickel, manganese, silicon, carbon, phosphorus, sulfur, and nitrogen. By combining these constituents in various proportions, AISI 348 becomes famous for maximum hardness and toughness in challenging environment demanding applications in such industries as aerospace, chemical processing, and power generation. The table of grades of the material demonstrates its superb qualities, hence it is trusted in many engineering applications that call for corrosion resistant material.

AISI 348 Austenitic Stainless Steel
Elements Fe Cr Ni Mn Nb Si Co Ta C P S
Min (%) 63.8 17 9 - - - - - - - -
Max (%) 74 19 13 2.0 1.0 0.75 0.2 0.1 0.080 0.045 0.030

The Advantages and Disadvantages of AISI 348 Austenitic Stainless Steel


  • High Temperature Strength: Has good high-temperature properties and is mechanically and dimensionally stable at high temperatures.

  • Oxidation Resistance: It also resists oxidation and scaling which is particularly important when working in high temperatures.

  • Corrosion Resistance: It provides good protection against different forms of corrosion as well as increased life span.

  • Weldability: It is easily weldable without the probability of the formation of sensitization and intergranular corrosion after welding.

  • Creep Resistance: Exhibits good resistance to creep deformation in conditions of high stress and temperature.


  • Higher Cost: Tends to have a higher cost than plain stainless steels because of its specific formulation.

  • Work Hardening: Quicker in attaining its hardness during the machining process and thus require special tools and methods.

  • Limited Availability: Not as common as the main types of stainless steel categories, which might result in procurement difficulties.

  • Magnetic Properties: Can become slightly magnetic after deformation or cold working.

  • Chloride Sensitivity: Although relatively resistant to corrosion, may exhibit pitting in conditions with high chloride content, and proper care must be taken with material choice, and maintenance.

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Frequently Asked Questions

What does AISI 348 stainless steel contain chemically?

AISI 348 Stainless steel normally has chromium of between 17-20 %, nickel of between 8-11% and small measures of other alloys including manganese and silicon and carbon.

Is AISI 348 stainless steel available in different grades?

AISI 348 is not divided into sub- grades itself and is rather a specific material characterized by its chemical composition and mechanical properties.

What are the common uses of AISI 348 stainless steel?

AISI 348 stainless steel is used in applications where parts are exposed to high temperature like in furnace parts, jet engine parts, heat exchangers and many more because the material is highly resistant to heat and corrosion.

Which other grades of stainless steel are more resistant to corrosion than AISI 348 grade?

AISI 348 has fairly good corrosion resistance in many environmental conditions as does other austenitic stainless steels including AISI 304 and AISI 316.