20Х23Н13 - 1.4833 - aisi 309 pipe
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 20Х23Н13 | EI319 | Delivery from the stock, in stock |
Main qualities
20X23H13 (AISI 309) — heat-resistant high-alloy steel of autensitic-ferritic class, designed for manufacture of parts operating at high temperatures of 900−1000 °C in lightly loaded state. Ferritic steels are classified as heat resistant. They withstand t° to 600 °C. At higher temperatures, austenitic steel is used. Unlike austenitic class steels, 20X23H13 grade is more durable (almost 2 times), more resistant to intergranular corrosion and corrosion cracking in chloride environments and alkalis. This steel is limited weldable, preheating to 100−120 °C with final heat treatment is required.
Production
In accordance with GOST 5632−72, stainless pipe made of this chromium-nickel alloy contains 22−25% Cr, 12−15% Ni, up to 2% Mn, 1% Si, up to 0.3% Cu, 0.2% Ti and carbon, thousandths of percent of phosphorus and sulfur. Heat resistance requirements complicate composition of steel and increase number of additional additives.
Percentage composition of brand 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 |
Pipe can be made in seamless way — seamless or by welding — electrowelded. Depending on type of surface, pipe can be indicated in catalogs as matte, polished or mirror, i.e. polished. Long products, including shaped, are made in accordance with following GOST: 2879−69, 2590−71, 2591−71, 5949−75.
Technological qualities depending on temperature
| t° | Ex10— 5 |
ax10 6 |
Thermal conductivity | Density |
| Degrees ° C | MPa | 1/Degrees | W/(mxdegrees) | 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 first kind, [MPa]
a — coefficient of thermal expansion
Using
This steel has balanced characteristics of heat resistance, which is why it is so popular. Such pipe can replace pipe of grade 20X23H14C2, if working conditions are not burdened. It contains less nickel than pipe made of steel 20X23H18 (AISI 310), which increases its resistance in environments containing sulfur. Pipe 20X23H13 is used in construction, medical and food industries, in chemical, petrochemical, shipbuilding industries, in aircraft industry and metallurgy. These pipes are stable in aggressive environment, thanks to chrome and nickel, protective tape capable of self-healing is formed on surface. Such pipes do not need to be replaced for a long time, minimize maintenance, and do not need to be painted.
Supply
All presented products of brand 20X23H13 (AISI 309) are certified. Technical documentation includes data on chemical composition, maximum percentage of impurities; mechanical qualities of products. You can buy in bulk any semi-finished products for large-scale production. We also offer optimal conditions for retail customers. High level of service and prompt service are face of our company.
Buy at best price
Site of LLC Elektrovek-steel reflects most current information on acquisition of stainless 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 from rare and color at competitive price. Products are manufactured using most modern equipment and meet quality requirements of Russian State Standard and international quality standards. Regular customers are given system of discounts.
