10Х14Г14Н4Т - ei711 sheet, circle, wire

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
10H14G14N4T EI711 Delivery from the stock, in stock

Production and application

Steel 10Х14Г14Н4Т (ЭИ711) is a chromium-manganese-nickel alloy of austenitic class. It is melted in open electric furnaces. Production is regulated by the following GOSTs: 25 054−81; 5632−72; 5582−75; 5949−75; 7350−77; 4405−75 as well as TU14−1-170−72. It is used in the manufacture of cryogenic equipment and welded equipment for chemical production of low aggressiveness, parts of furnace fittings and heat exchangers with operating temperatures up to 700 °C (screens, sheet parts of furnace rollers, muffles). This alloy is an economically alloyed analogue of X18H10 steel.

Chemical composition

C Cr Fe Mn Ni P S Si Ti
≤0,1 13−15 Osn. 13−15 2,8−4,5 ≤0,035 ≤0,02 ≤0,8 5-(С-0,02)-0,6

Mechanical properties (normalized) at 20 ° C

GOST Products σw, N/mm² σ0,2, N/mm² δ5, % ψ, %
5949−75 Rods and strips 640 245 35 50
7350−77 Thick plates 590 245 40 -
5582−75 Thin sheets 690 295 35 -
TU 14−3-59−72 Hot- and cold-rolled pipes 600 - 35 -

Mechanical properties at low and elevated tº (sheet 12 mm, water hardened at 1050 °C)

t° σB σ0, 2 ψ δ5 KCU,
degrees °С N/mm² N/mm² % % J/cm2
-253 1400 450 - 31 260
-196 1300 450 5 40 320
-70 940 300 68 52 320
20 730 270 67 62 320
400 460 130 67 53 -
500 390 110 63 38 -
600 270 90 62 39 -
700 220 80 63 48 -

σc — Tensile strength, [MPa]

δ5, — Relative elongation at break, [ % ]

ψ — Relative contraction, [ % ]

Mechanical properties at high tº (rod quenched in water at 1050 °С)

t° σB σ0, 2 ψ δ5 KCU,
degrees °С N/mm² N/mm² % % J/cm2
700 250 108 60 38 380
800 160 98 62 44 330
900 100 88 67 66 330
1000 50 - 85 64 270
1100 20 - 74 49 190
1150 15 - 69 43 180
1200 15 - 60 68 50

σc — Tensile strength, [MPa]

δ5, — Relative elongation at break, [ % ]

ψ — Relative contraction, [ % ]

Mechanical properties at 20 °C as a function of the degree of cold deformation

Sheet 2 mm, water quenching process at 1050 °C

Degree of compression, % σ0.2, N/mm² σc, N/mm² δ5, % Degree of compression, % σ0,2, N/mm² σ in, N/mm² δ5, %
0 270 730 52 40 1170 1200 10
20 900 1050 15 60 - 1500 2

Oxidation rate in calm air atmosphere

tisp, °C νok, mm/year tisp, °С νok, mm/year
700 0,1 800 0,35

Creep and creep strength limits (water quenching process at 1050°C)

tisp, °C σ1000, N/mm² σ1−10−3, N/mm² σ1−10−4, N/mm² tisp, °С σ1000, N/mm² σ1−10−3, N/mm² σ1−10−4, N/mm²
600 177 157 98 800 39 20 -
700 88 49 29 900 17 - -

Physical properties at 20°C

Density 7.8 g/cm3; magnetic saturation in the field of 500 E = 1.04 — 104 (Tl — m)² /A.

The values of the modulus of elasticity (E), temperature coefficient of linear expansion (α) and thermal conductivity coefficient (λ) depending on tº

tisp E — 10−4 N/mm2 λ, W/(m — K) Temperature range α — 106, К-1
-253 °С 22,5 3,36 -253−20 °С 8,8
-196 °С 22 8,4 -196−20 °С 10
-100 °С 21 12,6 -100−20 °С 13
-50 °С - - -50−20 °С 14,3
20 °С 21,3 18,9 - -
100 °С 20,7 18 20−100 °С 16
200 °С 19,7 19,3 20−200 °С 16,3
300 °С 18,8 16,8 20−300 °С 17
400 °С 17,4 21,4 20−400 °С 18
500 °С 16,5 22,6 20−500 °С 18,7
600 °С 15,6 23,9 20−600 °С 19,3
700 °С 14,7 25,6 20−700 °С 19,4
800 °С 14 42,8 20−800 °С 19,6

Corrosion resistance

According to GOST 5949−75, 7350−77, 5582−84 control of steel for resistance to intergranular corrosion is conducted by AM and AMU methods GOST 6032−89 (duration of exposure in control solution 15 and 8 hours, respectively). Tests begin after provoking heating to 650 °C, 1 hour with cooling in the air. Such steel has 1 point of resistance in 5−10% HNO3 up to 80 °C and in 60−65% HNO3 at 20 °C; in10% acetic acid and 10% H3P04 up to 80 °C; in tap water at 85 °C, in detergents, etc. п. This steel is used for high pressure oxygen pipelines and in the manufacture of welded casings and large pieces of gas liquefaction equipment.

Processing operations

This steel is workable in both hot and cold working conditions. Punching, forging and rolling can be done at 1150−850°C. This steel can be processed well when hot and cold. This steel can be welded with all welds with satisfactory results. For manual electric arc welding, the electrodes based on X18H9 wire are used.

Supply

All the presented products of 10Х14Г14Н4Т grade are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale production. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

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Evek GmbH has a diverse range of stainless alloys in stock. We supply certified products of domestic and foreign manufacturers. Our staff is always happy to assist you with qualified assistance in choosing metal products. We have some of the most experienced consulting managers. Strict adherence to production standards, excellent product quality and minimal lead time are the face of our company. Discount discounts have been introduced for regular customers.