20X23H18 - 1.4845 - aisi 310S pipe

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
20Х23Н18 EI417 1.4845 310S X12CrNi25-21 Delivery from the stock, in stock


Stainless steel grade 20X23H18 (AISI 310s) is a complex alloy of austenitic class, resistant to soil and atmospheric moisture, aggressive industrial gases. It is produced in accordance with GOST 5632-72. The main alloying element is chromium. It is contained in amount of 22-25%. The more it is, the higher resistance to corrosion is. With the content of more than 17%, steel becomes resistant in aggressive oxidizing environments. 12-15% Ni in the composition gives the necessary ductility and increases corrosion resistance and heat resistance. The alloy is also alloyed with 2% manganese, 1% silicon, 0.2% carbon, thousandths of a percent phosphorus and sulfur.

Percent composition of grade 20X23H18 (GOST 5632-72)

Alloy C Si Mn Ni Cr P S Ti Fe
20X23H18 ≤0,2 ≤1 ≤2 17-20 22-25 ≤0,035 ≤0,025 --- basis

Physical properties depending on temperature

Ex10- 5 ax10 6 Thermal conductivity Density Rx10 9
Degrees °С MPa 1/Grad W/(mhgrad) g/cm3 Ohmhm
20 2.04 13.8 7,9 1000
300 1.86 16.6 18.8
600 1.63 17.85 21.7 7,67
700 1.53 17.85 7,62

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

a - coefficient of thermal expansion


Forgings, seamless tubes, parts of combustion chambers, bandages, clamps, hangers, parts of fastening of boilers, muffles for work at t° 1100 °C. Recently this steel has been increasingly used in the food industry for the production of heat-resistant cookware, as well as various instruments used in the stages of food production. The steel meets the strictest hygiene and sanitary standards. It is a multifunctional convenient material. The surface of steel pipe can be matt, mirror as well as polished. Such pipes are widely used in food, pharmaceutical, chemical industry, construction and advertising elements.

Mechanical properties of rolled products atto 20o C

Range GOST σB σT d5 Heat treatment
Pipe Ø 212x60 500 200 35 Tempering 1100 - 1150o C, air
Bar, 5949-75 490 196 35 Tempering 1100 - 1150o C, air

σB - short-term tensile strength;

σT - yield strength for permanent deformation;

d5 - elongation at break.


All 20X23H18 products are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; 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. High level of service and prompt service is the face of our company.

Buy at the best price

At the warehouse of " Evek GmbH " a diverse assortment of stainless steel alloys is presented. We supply certified products of domestic and foreign manufacturers. Our staff are always happy to provide you with expert assistance in the selection of metal rolling. We have some of the most experienced consulting managers. Strict adherence to production standards, excellent product quality and minimal lead time are the face of our company. Discount discounts have been introduced for regular customers.