03H17N14M3- 1.4404 - Aisi 316L Pipe

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
03Х17Н14М3	EI844	1.4435	~316L	X2CrNiMo18-4-3	Delivery from the stock, in stock

Characteristic

High alloy 03H17N14MZ relates to austenitic grades. It is used in the production of basic units of equipment in the chemical synthesis of caprolactam and urea.

Physical quality at t ° 20 ° C

— Modulus 19.5x10−4 N / mm2, and at t ° 19 300 ° C x 10−4 N / mm2.

— Density of 7.75 g / cm3.

— Thermal conductivity = 0,294 · 10² W (m · K).

— Coefficient of linear thermal expansion α · at t ° 20−200 ° C = 16,1x10−6 / ° C; at t ° 20−300 ° C = 14,4x10−6 / ° C.

— Resistivity = 0.73 Omxmm2 / m.

The percentage of

Fe	Cr	C	Mn	P	Ni	Mo	Si	S
Bas.	16,8−18,3	≤0,03	1−2,0	≤0,035	13,5−15,0	2.2−2.8	≤0,4	≤0,020

The mechanical characteristics of the alloy at a temperature of 20 ° C.

Specifications and Standard	Type of product	σ0,2, N / mm²	Rm N / mm²	δ5,%
14−1-1154−74	Hot-rolled sheet	200	500	40
14−1-1541−75	Hot-rolled sheet	200	500	40
14−1-2144−77	Hot-rolled sheet	200	500	-
14−1-692−73	Cold-rolled sheet	200	500	40
GOST 5582−75	Cold-rolled sheet	200	500	40
14−3-396−75	seamless pipe	200	500	thirty
14−1-240−72	bar	200	500	40

application

In the manufacture of urea 03H17N14MZ alloy used for the lining of the synthesis column and mixers, and in the manufacture of caprolactam — cyclohexane oxidation reactors. This alloy is used in the production of welded structures, which are operated in sulphate media, as well as in boiling 10% acetic and phosphoric acids.

Treatment

Plastic hot deformation is carried out in the temperature range of 1150−900 ° C. This steel has high plasticity. Water quenching at 1080 ± 20 ° C is used to relieve work hardening and after cold-hot plastic deformation.

Welding

Good weldability of all types of automatic and manual welding. When an electric hand-welding are used electrodes RLA-20 with steel wire 03H17N14M2 (or EP551). In the process of automatic welding in inert gas or submerged arc wire used the same brand. Strength and corrosion resistance of welded joints while not lower than the base metal. Welds steel urea synthesis in a medium not susceptible to intergranular, corrosion, and the blade have 0,041−0,11 corrosion rate mm / year.

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