20X23H13 - 1.4833 - aisi 309 pipe

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
20X23H13 EI319 Delivery from the stock, in stock

Basic qualities

20X23H13 (AISI 309) - heat-resistant high-alloy steel of the outtense-ferrite class, designed for the manufacture of parts operating at high temperatures of 900-1000 ° C in a low-load condition. Ferritic steels are classified as heat resistant. They can withstand t° up to 600 °C. At higher temperatures, austenitic steel is used. As opposed to austenitic class steels, 20X23H13 grade is characterized by higher strength (almost twofold), greater resistance to intergranular corrosion and corrosion cracking in chloride media and alkalis. This steel - limited weldable, requires preheating to 100-120 ° C and the final heat treatment.


Stainless tube of this chromium-nickel alloy in accordance with GOST 5632-72 contains 22-25% Cr, 12-15% Ni, up to 2% Mn, 1% Si, up to 0.3% Cu, 0.2% Ti and carbon, thousands of percent of phosphorus and sulfur. Requirements for heat resistance complicate the steel composition and increase the number of additional additives,

Percent composition of grade 20X23H13 (GOST 5632-72)

Cu C Si Mn Ni Cr P S Ti Fe
≤0,3 ≤0,2 ≤1 ≤2 12-15 22-25 ≤0,035 ≤0,025 ≤0,2 basis

The pipe can be made seamless - solid drawn or by welding - electro-welded. Depending on the type of surface, the pipe can be designated in catalogs as matt, ground or mirror, that is polished. Sections, including shaped are produced in accordance with the following GOST: 2879-69, 2590-71, 2591-71, 5949-75.

Technological qualities depending on the temperature

Ex10- 5 ax10 6 Thermal conductivity Density
Degrees ° C MPa 1/Grad W/(mhgrad) g/cm3
20 2.07 7,82
200 15.7 17 7,75
400 17.1 21 7,64
600 17.8 24 7,58
800 29 7,48

E - modulus of elasticity of the first kind, [MPa]

a - coefficient of thermal expansion


This steel has balanced characteristics of heat resistance and heat resistance, that is why it is so popular. This pipe can replace the pipe brand 20X23H14S2, if the working conditions are unstressed. It contains less nickel than 20X23H18 steel pipe (AISI 310), which increases its resistance in environments containing sulfur. 20Х23Н13 pipe is used in construction, medical and food industry, chemical, petrochemical, shipbuilding industry, aircraft construction and metallurgy. These pipes are resistant in aggressive environment, thanks to chromium and nickel, a protective film is formed on the surface capable of self-repair. These pipes do not need to be replaced for a long time, reduce maintenance to a minimum and do not need to be painted.


All the presented products of grade 20Х23Н13 (AISI 309) are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities, the mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

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The website of Evek GmbH reflects the most up-to-date information on the purchase of stainless steel alloys to date. Experienced managers who are always in touch are ready to provide highly qualified advice on any current issues. We sell semi-finished products of rare and non-ferrous alloys at a competitive price. Products are manufactured on the most modern equipment and meet the requirements of international quality standards. Regular customers are offered a system of discount discounts.