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Wire, circle, tube of steel 40×13, EZh4


Grade analogue W. Nr. Aisi Uns En Order
40X13 EJ4 1.4034 420 X46Cr13 Buy from stock, view availability

Technical characteristics

Steel 40X13 is a martensitic class stainless heat-resistant alloy. It is used in the production of low-loaded parts which work at temperatures up to 900 °C. The composition includes chromium 12-14%, nickel - 0,6%, manganese and silicon 0,6% each, carbon - 0,35-0,44%, thousands of percent of sulfur and phosphorus, the rest - iron. The density is 7.76 g/cm3. Steel 40X13 heat and corrosion resistant, not prone to temper embrittlement, poorly welded. 40Cr13 pipe has excellent resistance to atmospheric and soil moisture. Its analogue is alloy 30X13.

Percentage composition of grade 40X13 (GOST 5632-72).

Si C Mn P Cr Ni S Fe
≤0,6 0,35-0,44 ≤0,6 ≤0,03 12-14 ≤0,6 ≤0,025 Residue


Production of pipes is governed by the following GOSTs: 30 245-2003, 10 706-76, 10 705-80, 380-94, 13 663-86, 1050-88, 8639-82, 8642-68, 8645-68. Each of their standards stipulates individual characteristics of the product, for example, from the pipe with a certain cross-section. The temperature of hot-rolling pipes is 1180 °C at the beginning and about 900 °C at the end. With accelerated heating and cooling, the tubes are prone to cracking, so step heating and slow cooling in the furnace or in the sand are used. For softening heat treatment after hot rolling annealing at about 800 °C with cooling at 30-50 °C/hour is used. Tempering temperature is about 1000 °C with cooling in air or in oil.

The pipe is available in various lengths. 4-12 m is measured length, pipe length is multiple of measured length - its length is counted in the measured length range. An allowance of 5 mm is made for each cut, lengthwise deviation shall not exceed 10 mm over the whole length. Pipes may be of normal or extra precision in terms of manufacturing precision. Pipes are of the following types: square, oval and rectangular sections.

Welding .

Performed after heating to 250-400 ° C followed by heat treatment. Bonding of structural elements is carried out by manual arc welding with electrodes or by automatic welding. Further heat treatment is recommended to relieve welding stresses. Electric-welded pipes are of the following types: square cross-section, longitudinally welded round, oval and rectangular cross-section,


Pipes brand 40X13 used in petrochemical engineering, because the quality of the alloy provide the production of products for long life. Parts of steam generators, compressors, pumps and cracking units. Bearings, carburetor needles, piston rods of piston compressors, and other parts working in mildly aggressive environments up to t° 450 °C. This rolling is widely used in petroleum, chemical industry, medicine and food industry, shipbuilding.

Buy, bargain price.

A wide range of rolled products of alloy 40X13 in the warehouse of "Auremo" complies with GOST and international standards. The quality of the finished products is provided by the strict observance of all the technological production norms. The terms of execution of orders are minimal. If you have any questions, you will receive comprehensive advice from experienced managers. Always in stock wire, rounds, tubes of steel 40X13, EZh4 price - the best from the supplier. We invite you to partner cooperation. On wholesale orders the company provides discounts.