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GOST steel pipe 07KH21G7AN5


Grade analogue W. Nr. Aisi Uns En Order
07Х21Г7АН5 EP222 Buy from stock, view availability

Technical characteristics

Brand 07KH21G7AN5 (ЭП222) refers to a chromium-manganese-Nickel alloys austenitic. It is smelted in electric arc furnaces. Can also be used as var and ESR. Production is regulated by GOST 5949−75 and 5632−72 and specifications: 14−1-2455−78; 14−1-952−74; 14−1-1141−74; 14−1-2476−78; 14−1-3041−80. The steel used in the manufacture of welded and brazed structures, operating in the temperature range 253−400°C (spindles, chains, fasteners, suspension oxygen, flanges, welded and brazed thin-walled parts obtained cold and hot deformation and screw connections for high sinivuori).

Percentage composition of the alloy 07KH21G7AN5 (ЭП222)

Fe Cr C Mn P Ni N Si S
Basis. 19,5−21 ≤0,07 6 -7,5 ≤0,03 5−6 0,15−0,25 ≤0,7 ≤0,02

Physical quality (t° 20°C)

· The thermal conductivity is 0,194 · 102 W/(m · K)

· Is the specific heat capacity of 430 j/(kg · K).

· Density: 7.7 g/cm3

· Modulus of elasticity 20 · 10 — 4 N/mm2

· Hardness — HB 200 MPa -1

· The resistivity of 0.71, Mhmm2/m

· The magnetic permeability in a field of 500 e is equal to 0.3 — 0.5 (T · m)/A.


Can be automatic under the flux an-26; manual arc and TIG, without additives and with additives. As the filler metal used welding wire SV-10Х16Н25АМ6 SV-08Х15Н23В7Г7М2. 07KH21G7AN5 sheet thickness not exceeding 10 mm welded by all methods of manual arc welding satisfactorily. TIG method is recommended for welding of sheets less than 6 mm thick and the root joints over 10 mm. Preferably the steel is welding with stainless brands such as 07KH16N6, 12X18H10T, 12H21N5T, and high-temperature KHN60VT and ХН77Т1О. For welding with Nickel heat resistant alloys recommended welding wire Св06Х15Н60М15 with stainless steel alloys — SV-04Х19Н11МЗ. Welded joint does not require heat treatment.


Details of metallurgical and mining equipment, welded tanks, which are operated in wet-process phosphoric, 55% sulfuric acid and acetic acid to a temperature of 80 °C. Fabrication of structures operating in the temperature range -253 +400°C, connections of fittings, joints in the piping weld repair equipment that operates in a radioactive environment. As a plating layer such steel is used in the production of centrifugal-cast pipe coils for kilns and hot rolled dual-layer corrosion-resistant sheets in installations for the production of ethylene, ammonia, carbon disulphide, hydrogen.


Supplier «Auremo» offers to buy pipe 07KH21G7AN5 (ЭП222) in bulk or in installments. Large selection of semi-finished products in the warehouse. Compliance with GOST and international quality standards. Always in stock pipe 07KH21G7AN5 (ЭП222), the price is optimal from the supplier. Waiting for your orders. The wholesale customers are price — reduced.

To buy, best price

The company «Auremo» specializiruetsya selling stainless steel and heat resisting alloys. Offer products on favorable terms. In stock always in stock a large assortment of the highest quality. The price depends on order volume and additional conditions of delivery. Buy pipe 07KH21G7AN5 (ЭП222) today. For bulk purchase discounts.