02Х25Н22АМ2 - sheet, round, wire

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
02Х25Н22АМ2	ChS108				Delivery from the stock, in stock

Feature

Brand 02Х25Н22АМ2-PT refers to high-alloy austenitic steels. Is smelted in plasma furnaces with the use of clean charge materials. Production normalized following: 14−134−277−91; 14−1-5072−91; 14−1-5203−93; 14−159−252−95.This is particularly structurally stable nitrogen-containing low carbon steel. Used in the manufacture of equipment for the production of urea at a pressure of ≤ 200 N/mm² and a temperature from -70° to +200°C. outstanding strength and resistance to corrosion allows the use of such steel is brand 03Х17Н14МЗ, which provides the decrease of metal equipment, increases reliability, durability. This steel is also suitable to use in phosphoric-, nitric — and sulfuric acid environments, and is brand Х17Н14М2Т or Х17Н14М3Т in conditions promoting pitting corrosion. This steel is used for environments containing hydrogen sulfide with partial pressure of H₂ S ≤ 3,0 N/mm or₂ ≤ 30 N/mm² at t° to 150 °C.

Percentage composition

C	Cr	Si	Mo	Mn	N	Ni	P	S	Fe
≤0,02	24 -26	≤0,4	2,4 — 2,5	1.5 to 2	0,1 — 0,14	21 -23	≤0,020	≤0,015	Basis

Mechanical properties at 20°C

TU	Products	σ_in N/mm2	σ_t, N/mm2	δ₅, %
14−1-5072−91	Bars	490	196	30
14−1-5203−81	Sheets hot-rolled	540	255	40
14−134−277−91	Of tube billet	540	255	40
14−159−252−95	Seamless pipe	539	255	35

Mechanical properties at low and elevated t º (sort of Ø 40 mm, hot-rolled)

t_COI, °C	σ_0,2, N/mm2	σ_in N/mm2	δ, %	ψ, %	KCU, j/cm²
-196	-	-	-	-	330
-100	-	-	-	-	375
-50	-	-	-	-	375
20	365−435	720−860	48−49	79−81	375
100	320	685	45	77	-
200	310	625	43	75	-
400	190	545	44	76	-
500	170	490	44	75	-
600	165	460	46	69	-

A note to the table: toughness, after quenching from t 1100 °C. the Samples are not destroyed.

Mechanical properties at sufficiently high t º (sort of Ø 40 mm)

t_COI, °C	σ_0,2, N/mm2	σ_in N/mm2	δ, %	ψ, %	p,
900	115	157	88	68	12
1000	75	88	100	70	24
1100	43	48	85	66	23
1200	26	31	98	71	27

Physical properties

Steel density is 7,98 g/cm³.

Temperature coefficient of linear expansion α

t, °C	From 20 to 100	From 20 to 200	From 20 to 300	From 20 to 400	From 20 to 500	From 20 to 600	From 20 to 700	From 20 to 800	From 20 to 900
α · 10⁶, ^-1	15,6	16,2	17,4	17,8	18,2	18,7	19,1	19,5	19,9

Resistance to corrosion

According to the following TU 14−159−252−95, 14−1-5203−93 steel comes after quenching at t° 1100 °C without provoking holiday. Resistant to intergranular corrosion when tested according to the method of DU GOST 6032−89 in boiling 65% HNO₃, and 5 cycles for 48 hours. The corrosion rate after each of the cycles does not exceed 0.3 mm/year. According to T. U. 14−1-5072−91 rolled steel and the 14−134−277−91 (billets) must meet the requirements above. Susceptibility to intercrystalline corrosion test on samples after heat treatment (at t° 1100°±10°C, air cooling, without provoking holiday).

Susceptibility to corrosion — samples cut from varieties Ø 40 mm (value in the numerator), and grade Ø 120 mm (value in denominator) when tested by the method of DU

heat treatment	cycle I	cycle II	cycle III	cycle IV	cycle V
The hot rolling process	0,1 / 0,13	0,06 / 0,07	0,05 / 0,07	0,06 / 0,07	0,05 / 0,04
The hardening process with a t 1000 °C	0,11 / 0,12	0,08 / 0,08	0,05 / 0,06	0,06 / 0,06	0,07 / 0,06
The hardening process with a t 1100 °C	0,12 / 0,12	0,07 / 0,08	0,05 / 0,06	0,06 / 0,07	0,06 / 0,07
The hardening process with a t 1100 °C + vacation t 650 °C, 1 hour	0,15	0,11	0,11	0,05	0,05

Steel resists intergranular corrosion when tested according to the method of WU GOST 6032−89, after a 5-hour tempering at t° 600−800°C. Welded connections are not prone to intergranular corrosion, including corrosion of knife type upon exposure to a solution of 40% HNO3 + 2% HF (at 95 °C, 48 hours). This steel has a high resistance to local corrosion (pitting, crevice in environments rich in chlorides) and stress corrosion cracking in hydrogen sulfide-containing environments.

Technological parameters

This steel is a high — tech, affordable hot and cold plastic deformation. The temperature interval of hot deformation 1230−980°C. Quenching is carried out at t° up to 1100°C±10 ° C With cooling in water. The same heat treatment used to relieve cold working, after hot and after cold deformation. In hot-rolled condition the structure is fine-grained austenitic steel (No. 9−10); there is almost no ferrite (<0,5%). The metal non-metallic inclusions clean. Recrystallization of austenite grains in samples of sheet metal passes during heating to t° 1100 °C, after aging structure of sheet metal has a grain size of No. 7-8.

Welding

Use manual TIG method using filler wire SV-01Х23Н23МЗТЗ. The seams are not prone to intergranular, knife corrosion when used in oxidizing environments.

Supply

In stock, LLC «Electrocentury-steel» a wide selection of rental brand 02Х25Н22АМ2-FRI any parameters. In the technical documentation included data on chemical composition, limiting the percentage of impurities; mechanical qualities of the products. We can buy in bulk any semi-finished products for large-scale production. We also offer optimal conditions for retail customers. A high level of service and speed of service are the face of our company.

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