03Х17Н14М3- 1.4404 - aisi 316L tube

Wire, circle, rod
Sheet, tape

International Equivalent

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

Characteristics

High-alloy 03X17H14MZ alloy belongs to the austenitic class. It is used in the production of the main equipment units in the chemical synthesis of caprolactam and urea.

Physical properties at t° 20°C

- Modulus of elasticity is 19.5x10-4 N/mm2, and at 300 ° C 19x10-4 N/mm2 .

- The density is 7.75 g/cm3.

- thermal conductivity = 0.294 - 10² W (m - K).

- linear thermal expansion coefficient α - at t ° 20-200 ° C = 16.1x10-6 / C, at t ° 20-300 ° C = 14.4x10-6 / C.

- Specific electrical resistance = 0.73 Ohmxmm2 / m.

Percentage composition

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

Mechanical characteristics of the alloy at 20 °C.

Specifications and GOST Product Type σ0,2, N/mm² σ in, 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 tube 200 500 30
14-1-240-72 Bar 200 500 40

Mechanical characteristics at elevated and low temperature (6 mm thick sheet, quenched in water at 1100°C)

σ0,2, N/mm² σ in, N/mm²
tisp, °C		 δ5, % σ0,2, N/mm² σ in, N/mm² tisp, °С δ5, %
260 620 20 60
320 700 -50 65 100 400 600 50
380 800 -100 70 280 510 400 30
600 1100 -196 60 200 490 200 45

Mechanical characteristics at high temperature (20 mm thick sheet, water hardened at 1100°C)

σ0.2, N/mm² σ in, N/mm²
tisp, °C		 δ5, % n, vol KCU, J/cm2 ψ, %
10 20 1200 95 13-15 100 80
20 50 1100 78 10 150 62
50 80 1000 78 7-8 200 70
100 130 900 57 6 210 58
200 280 800 23 5 200 30

Corrosion resistance

According to the following specifications: 14-1-1154-74, 14-1-69 273, 14-1-1541-75, 14-1-240-72, 14-1-2144-77 alloy 03X17H14MZ when tested in boiling 65% nitric acid (density 1.41 g/cm3), made ofdistilled water and absolutely pure acid OSCh-1 1-3 according to GOST 11 125-73 must be resistant to intergranular corrosion. According to the above mentioned specifications, in addition to TU 14-1-2144-77, duration of tests is 3 cycles of 48 hours each on hardened samples.

Duration of tests according to TU 14-1-2144-77 is 5 cycles of 48 hours each. The rate of corrosion of the alloy must not be more than 0.5 mm/year. This steel 03Х17Н14МЗ according to GOST 5582-75 according to GOST 6032-89 must be resistant to intergranular corrosion. According to specification 14-1-1847-76 control of resistance to intergranular corrosion is standardized AMU GOST 6032-89 and carried out on samples after hardening.

Application

In the manufacture of urea 03Cr17H14MZ alloy is used for lining synthesis columns and mixers, and in the manufacture of caprolactam - in the oxidation reactors cyclohexane. This alloy is used in the production of welded structures that operate in sulfuric acid environments, as well as in boiling 10% acetic and phosphoric acids.

Processing

Plastic hot deformation is carried out in the temperature range of 1150-900°C. This steel has high ductility. Hardening in water at 1080 ± 20°C is used for debinding after cold and hot plastic deformation.

Welding

Good weldability by all automatic and manual welding methods. In manual arc welding OZL-20 electrodes with 03X17H14M2 (or EP551) steel wire are used. During automatic welding in shielding gas or submerged arc welding wire of the same grade is used. The strength and corrosion resistance of welded joints in this case is not lower than the base metal. Welded seams of steel in urea synthesis medium are not susceptible to intergranular, knife corrosion and have a corrosion rate of 0.041-0.11 mm / year.

Applicable GOST for the steel 03Cr17N14M3

5582-75; "Corrosion-resistant thin sheet steel, heat-resistant and heat-resistant. TU".

25 054-81 "Forgings of corrosion-resistant alloys and steels. General specifications. Specifications".

5632-72 "Alloys of corrosion-resistant and high-alloy steels, heat-resistant heat-resistant. grades".

5949-75 "Calibrated and section steel corrosion-resistant, heat-resistant and heat-resistant. Technical Conditions". ;

5632-72 "Corrosion-resistant and high-alloy steel alloys, heat-resistant and heat-resistant. Grades".

TU 14-11-245-88. "Shaped steel profiles of high accuracy.

Buy at the best price

Evek GmbH has a wide range of stainless steel products in stock. Our representative offices are located. You can make a purchase without leaving the office, through the Company's website. The popularity of 03Cr17N14M3 grade is explained by a diverse assortment and low cost. All the products have the highest quality. Technological completeness of each stage of production makes it possible for us to make individual orders if you are not satisfied with the basic execution of the product. We carry out high quality individual orders of non-standard parameters, the timing of their implementation is minimal. In case of bulk purchases we provide discounts.