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Steel 10KH14G14N4T (ЭИ711; Х14Г14Н4Т)

Steel 03Х13Н8Д2ТМ (EP699) Steel 03Х19АГ3Н10 (DI105) Steel 03Х19Г10Н7М2 Steel 03X20H16AG6 Steel 05X18N10AG10MB Steel 10Х14Г14Н4Т (ЭИ711; Х14Г14Н4Т)

Designation

Name The value
Designation GOST Cyrillic 10Х14Г14Н4Т
Designation GOST Latin 10X14G14H4T
Transliteration 10H14G14N4T
The chemical elements 10Cr14Mn14Н4Ti
Name The value
Designation GOST Cyrillic ЭИ711
Designation GOST Latin EI711
Transliteration EhI711
The chemical elements -
Name The value
Designation GOST Cyrillic Х14Г14Н4Т
Designation GOST Latin X14G14H4T
Transliteration H14G14N4T
The chemical elements Cr14Mn14Н4Ti

Description

10KH14G14N4T steel is used: for the manufacture of a variety of welded equipment operating in environments of chemical plants weak aggressiveness, cryogenic equipment to -253 °C, and for use as heat-resistant and heat-resistant material up to +700 °C; equipment operating in environments of weak aggressiveness at temperatures down to -196 °C; welding wire; pipes GOST 9940 and GOST 9941.

Note

Stable corrosion resistant chromium-Nickel steel of austenitic class.
Steel 10KH14G14N4T recommended as a substitute for steel 12KH18N10T, has a satisfactory resistance to corrosion microcalcite.

Standards

Name Code Standards
Sheets and stripes В23 GOST 103-2006
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Metal forming. Forgings В03 GOST 25054-81, ST ЦКБА 010-2004
Sheets and stripes В33 GOST 4405-75, GOST 5582-75, GOST 7350-77, TU 14-1-3699-83
Classification, nomenclature and general norms В30 GOST 5632-72
Sectional and shaped rolling В32 GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88
Bulls. Blanks. Slabs В31 OST 3-1686-90, TU 14-1-170-72
Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004, ST ЦКБА 016-2005
Welding and cutting of metals. Soldering, riveting В05 TU 14-1-2832-79
Pipes steel and connecting parts to them В62 TU 14-3-1905-93, TU 14-3-59-71

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Ti Mo
TU 14-1-170-72 ≤0.1 ≤0.025 ≤0.035 13-15 13-15 ≤0.8 3.8-4.5 The rest - 0.3-0.6 -
TU 14-3-1905-93 ≤0.1 ≤0.02 ≤0.035 13-15 13-15 ≤0.8 3.8-4.5 The rest ≤0.3 0.3-0.6 ≤0.3
GOST 5632-72 ≤0.1 ≤0.02 ≤0.035 13-15 13-15 ≤0.8 2.8-4.5 The rest ≤0.3 - ≤0.3
Fe is the basis.
According to GOST 5632-72 the content of Ti% = 5 (C% - 0.02) - 0.6%
According to TU 14-1-170-72, the chemical composition is presented for steel grade 10H14G14N4T. Allowed subject to compliance with all the requirements of technical requirements deviation from the established standards of chemical composition in accordance with GOST 10500.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
The billet according to TU 14-1-170-72. Quenching in water from 950-1050 °C. Samples of the longitudinal
- ≥588 ≥35 - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥270 ≥730 ≥52 ≥72 - -
Sheet 3 mm. Quenching in water from 1050 °C. the Deformation of compression (indicated by the degree of deformation %)
- ≥900 ≥1050 ≥15 - - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1000-1180 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
≤60 ≥245 ≥637 ≥35 ≥50 - 121-179
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥130 ≥460 ≥53 ≥67 - -
Sheet 3 mm. Quenching in water from 1050 °C. the Deformation of compression (indicated by the degree of deformation %)
- ≥1170 ≥1200 ≥10 - - -
Sheet. Quenching in water from 1000-1050 °C
3-5 ≥300 ≥700 ≥25 - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥110 ≥390 ≥38 ≥63 - -
Sheet 3 mm. Quenching in water from 1050 °C. the Deformation of compression (indicated by the degree of deformation %)
- - ≥1500 ≥2 - - -
Sheet. Quenching in water from 1000-1050 °C
5-6 ≥300 ≥650 ≥35 - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥90 ≥270 ≥39 ≥62 - -
Sheet 3 mm. Quenching in water from 1050 °C. the Deformation of compression (indicated by the degree of deformation %)
- ≥270 ≥730 ≥52 - - -
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water from 1050-1080 °C
- ≥295 ≥690 ≥35 - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥80 ≥220 ≥48 ≥63 - -
Plate 12х30х220 mm from the sheet. Warp tension (indicated the degree of deformation %)
- ≥250 ≥810 ≥64 ≥65 ≥283 -
Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air from 1050-1080 °C
- ≥245 ≥590 ≥40 - - -
Plate 12х30х220 mm from the sheet. Warp tension (indicated the degree of deformation %)
- ≥400 ≥850 ≥57 ≥65 ≥225 -
Sheet 16 mm. Quenching in water from 1050 °C
- - ≥160 ≥44 ≥62 ≥330 -
Bars hot rolled and forged according to GOST 5949-75. Quenching in water, oil or air from 1000-1080 °C
≥245 ≥640 ≥35 ≥50 - -
Plate 12х30х220 mm from the sheet. Warp tension (indicated the degree of deformation %)
- ≥630 ≥910 ≥46 ≥64 ≥169 -
Sheet 16 mm. Quenching in water from 1050 °C
- - ≥100 ≥66 ≥67 ≥330 -
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1000-1080 °C
≥250 ≥650 ≥35 ≥50 - -
Plate 12х30х220 mm from the sheet. Warp tension (indicated the degree of deformation %)
- ≥230 ≥820 ≥59 ≥64 ≥294 -
Sheet 16 mm. Quenching in water from 1050 °C
- - ≥50 ≥64 ≥85 ≥270 -
Seamless pipes hot and cold-drawn, heat-treated on the other 14-3-1905-93. In the state of delivery (specified outside diameter of pipe)
76-159 - ≥588 ≥35 - - -
Sheet 16 mm. Quenching in water from 1050 °C
- - ≥20 ≥49 ≥74 ≥190 -
- - ≥15 ≥68 ≥60 ≥180 -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С
0 194 7800 15 -
20 194 7800 15 -
100 189 - 17 16
200 181 - 18 167
300 170 - 21 175
400 164 - 24 184
500 159 - 30 19
600 161 - 36 195
700 - - 43 201
800 - - 51 206
900 - - - 206
1100 - - - 21

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Weldability Steel welded satisfactorily by all types of welding. For manual arc welding electrodes are used of the type EA-1, EA-1A, EA-1BA. Automatic welding under flux an-26. In the case of welding electrodes type e-08Х19Н10Г2МБ (stamps EA 898/21 B, etc.) to relieve residual stresses in welded assemblies: a) working at 350 °C and above; b) operating at temperatures above 350 °C, if the hardening is impractical to apply a stabilizing annealing at 850-920 °C (extract after heating the batch for at least 2 hours).
Propensity to temper brittleness tend not
Forging temperature Start - 1150 °C, the end - 850 °C.
Flock-sensitive sensitivity not sensitive.
Features of heat treatment Depending on assignment, working conditions, corrosive environment the product is subjected to: a) hardening (austenization); b) stabilizing annealing; C) annealing for stress relieving; d) a stepwise processing. The product is quenched in order to: a) prevent the tendency to intergranular corrosion (products can operate in temperatures up to 350 °C); b) to increase resistance against General corrosion; C) to eliminate the revealed tendency to intergranular corrosion; g) to prevent the tendency to stab corrosion (welded work product in solutions of nitric acid); d) to eliminate residual stress (products simple configuration); e) to increase the plasticity of the material. The quenching products should be carried out on mode: heating to 1050-1100 °C, items material thickness up to 10 mm cooling on air, more than 10 mm in water. Welded parts of complex configuration in order to avoid the leash is to be cooled in the air. The holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm maximum thickness. In the hardening of products, intended for operation in nitric acid, the heating temperature for hardening must be kept at the upper limit (exposure at the same weldment should be not less than 1 hour). Stabilizing annealing is applied to: a) prevent the tendency to intergranular corrosion (products work at temperatures above 350 °C); b) stress relief; C) the elimination of discovered tendency to intergranular corrosion, if for any reason hardening is inappropriate. A stabilizing annealing, for example for products and welded joints of steels in which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8. Stabilizing annealing to prevent the tendency to intergranular corrosion products, operating at temperatures over 350 °C can be subjected to steel containing not more than 0.08 % of carbon. Stabilising annealing should be carried out according to the mode: heating up to 870-900 °C, exposure time of 2-3 h, cooling in air. During heat treatment of large welded products are permitted to carry out local stabilizing annealing of closing seams in the same mode, with all welded components shall be subjected to a stabilizing annealing before welding. In the case of local stabilizing annealing is necessary to ensure both uniform heating and cooling across the length of the weld and adjacent base metal zones for a width equal to two or three widths of a seam, but not more than 200 mm. Manual heating method is invalid. For a more complete removal of residual stresses, the annealing products of stabilized chromium-Nickel steels is performed according to the mode: heating up to 870-900 °C; exposure of 2-3 h, cooling with the furnace to 300 °C (cooling rate of 50-100 °C/h), then by air. The annealing is carried out for products and welded joints of steel, from which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8. Step processing is to: a) relieve residual stresses and prevent the tendency to intergranular corrosion; b) to prevent the tendency to intergranular corrosion of welded joints of complex configuration with sharp transitions in thickness; C) products with the tendency to intergranular corrosion, remove which other method (annealing or stabilizing annealing) is inappropriate. Step treatment should be carried out according to mode: heating to 1050-1100 °C; the holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm of maximum thickness; cooling as fast as possible to 870-900°C; holding at 870-900 °C for 2-3 hours; cooling with the furnace to 300 °C (speed of 50-100 °C/h), then by air. To expedite the process, step-by-step treatment is recommended in two in two furnaces heated to different temperatures. When transferring from one furnace to another, the temperature of the products should not be below 900 °C. Speed of processing permitted for products and welded joints of steel, from which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8.
Propensity to intergranular corrosion Satisfactory resistance to intergranular corrosion.

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