20xn3a - aisi 4320 - 20hn3a pipe, circle, rod

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
20ХН3А 4320 20hn3a Delivery from the stock, in stock

Evek GmbH offers to buy volumetric rolled products - rounds, bars and pipes made of constructional chromium-nickel steel of 20XH3A, 20hn3a, AISI 4320 grades at producer's price. Delivery is possible in the shortest time, with the delivery of purchased products directly to the consumer.

Chemical composition

20XHN3A steel is one of the leading grades of chromium-nickel constructional steels. It is produced in CIS countries in accordance with technical requirements of GOST 4543. The chemical composition of steel corresponds to that given in the table:

Element Carbon Silicon Manganese Chrome Nickel
Content in steel, % 0,17...0,24 0,17...0,37 0,30...0,60 0,60...0,90 2,75...3,15

In addition, there are non-metallic components in the steel - sulfur and phosphorus - whose amount may not exceed 0.025%.

Steels of a similar class are also produced abroad. It is worth mentioning 20hn3a steel which is melted in Poland and by its composition is identical to 20KhN3A steel. The North American analogue, AISI 4320, is also known. This steel is rolled as per ASTM A569. The chemical composition of AISI 4320 is as follows:

Element Carbon Silicon Manganese Chrome Nickel Molybdenum
Content in steel, % 0,17...0,22 0,15...0,30 0,45...0,65 0,40...0,60 1,65...2,00 0,20...0,30

Tolerances for the maximum content of sulfur and phosphorus are 0.040% and 0.035% respectively.

Buy at producer price rounds, bars and tubes made from structural chromium-nickel steel 20XH3A, 20hn3a, AISI 4320 offers the company Evek GmbH. The supplier guarantees a favorable price from the manufacturer, as well as provide timely delivery of products to the consumer in the required range.

Properties and application

The steels under consideration have good machinability by cutting and pressure, high strength and good weldability. They are used for critical engineering equipment parts - shafts, axles, gears, gears and the like, which are used at high specific loads, as well as stop valves of pipelines.

Physical and mechanical characteristics of steels after annealing:

  • tensile strength, MPa - 580;
  • yield strength, MPa - 425;
  • Elastic modulus, GPa - 190...210;
  • Relative elongation, % - 29;
  • Relative narrowing, % - 58;
  • Brinell hardness, HB - not more than 165.

Evek GmbH offers to buy pipes, bars, rounds of structural alloy steels of 20XHN3A, 20hn3a, AISI 4320 grade with high chromium and nickel content. Price - from producer. Supplier to ensure strict adherence to the range of supply of rolled products, as well as delivery of products to the address specified by the customer.