1.4439 - aisi 317 LMn pipe, wire, round

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
1.4439 S31726 X2CrNiMoN17-3-5 Delivery from the stock, in stock
1.4439 317LMN X2CrNiMoN17-13-5 Delivery from the stock, in stock

Buy AISI 317L (1.4438) austenitic stainless steel tubes, wires, rounds at an affordable price from Evek GmbH

Are you looking for AISI 317L (1.4438) low-carbon austenitic grade stainless steel bulk metal products at an affordable price from the supplier Evek GmbH? Here you can choose products in any assortment and range, and only of high quality, which will be confirmed by a certificate. Prompt delivery of rolled metal products to almost any spot on the globe is guaranteed.

Composition and properties

Stainless steel AISI 317L (1.4438) is a low-carbon alloy of austenitic class, with high chromium (up to 18%) and nickel (up to 13%). The percentage of carbon in steel does not exceed 0,03%, and it is completely bound by iron, representing a solid solution of cementite in the base metal matrix. Steel differs from similar grades by the increased (up to 3%) content of molybdenum.

Depending on the producing country, the steel composition is somewhat different, as follows from the table (the rest is iron):

Country Standard Carbon Chromium Nickel Molybdenum
USA AISI 0,03 24...26 22 0,75
Germany DIN 0,02 20 18 5
Japan JIS 0,035 18...20 11...15 2...4

The chemical composition of the alloy determines the following features:

  1. Increased resistance to corrosion, including high-temperature corrosion.
  2. High acid resistance.
  3. Durability at elevated temperatures up to 1300...18000 С for long-term operation of products.
  4. Strength under prolonged loads not exceeding the tensile strength limit.
  5. Satisfactory weldability.

When melting in vacuum furnaces the alloy is additionally saturated with nitrogen, which is further bound in high-strength chromium carbides. The presence of molybdenum promotes the formation of intermetallic compounds, which further enhances heat resistance.


Pipe made of steel AISI 317L (1.4438) is widely used in the manufacture of pipelines, which are systematically pumped liquid aggressive media, including at elevated temperatures. In this case, the growth and development of pitting corrosion sources is slowed down, resulting in increased service life of pipelines. Consumers are the gas and oil refining industry, as well as the production of various chemical reagents - plant protection products, pharmaceutical semi-finished products , etc.

Circle of this alloy (domestic substitute - steel 03X19H13M3, produced under special TU) is used in the manufacture of high-strength valves. At the same time the technology of cold and hot volumetric stamping is implemented.

Wire made of AISI 317L (1.4438) steel is used in high-precision measuring devices and apparatuses which carry out continuous control over the functioning of steelmaking complexes.