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Sheet, strip 20S - 20Cr4 - 20h

Sheet, strip 20S - 20Cr4 - 20h

Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer a sheet, a strip, which are made of steel grade 20Х (20Сr4, 20h). The supplier guarantees the timely delivery of products to any address specified by the consumer.

Technical specifications

Low-carbon steel grade 20X (the nearest foreign analogues — steel 20Cr4, 20h) is a structural steel, alloyed with chromium. Steel is not inclined to intercrystalline corrosion, it is characterized by very high ductility under hot and cold pressure treatment, suitable for the production of prefabricated metal structures of complex shapes. The material has a hardenability — medium. This steel has good heat resistance and wear resistance at medium and high slip speeds.

Urgency of application

Due to its good machinability, wear and heat resistance, 20X (20Cr4, 20h) steel is used in automatic turning technology, is used in building metal structures of increased strength, in railway transport units, conveyor steel belts, fittings, parts of domestic boilers and heat exchangers, high pressure, as well as for the manufacture of other parts, the operational durability of which is determined by high surface hardness at relatively viscous th core.

Chemical composition

According to the technical requirements of GOST 4543−91, the following elements are included in steel 20X (numerical data — in percent):

C Si Mn Ni S P Cr Cu
0.17 — 0.23 0.17 — 0.37 0.5 — 0.8 Up to 0.3 up to 0.035 up to 0.035 0.7 — 1.1 up to 0.3

Physical and mechanical properties

  • density, kg / m 3 -7830;
  • melting point, 0 С -1470;
  • coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 10,5;
  • Specific heat, J / grad — 496;
  • modulus of elasticity, GPa — 213;
  • coefficient of thermal conductivity in the temperature range 20… 100 0 С, W / mgrad — 42;
  • Brinell hardness, НВ — 229;
  • limit of time resistance, MPa — 440… 780 (depending on the assortment);
  • yield strength, MPa — 320… 485 (depending on the assortment);
  • permissible tensile elongation,% — 11… 18.

Assortment and application features

The sheet and strip of alloyed structural steel 20Х (20Сr4, 20h) are produced in a wide range of cross sections and lengths. Mechanical machinability and weldability are good. Steel is not prone to flocculation and to a decrease in plasticity after tempering. The temperature range of forging is 820… 1200 0 С.

Supplier — AvekGlob Company — offers to buy a strip or sheet of low-carbon structural steel 20Х (20Сr4, 20h) in the required assortment of cross sections and length. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.