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Alloy 06HN28MDT (ЭИ943)

Alloy 01X18H40M5G2TFRY (EP753U) Alloy 01X18H40M5GB (EP753; ČS116) Alloy 01X18H40M5GBR (EP753R) Alloy 03KhN28MDT (EP516) Alloy 06XHN28MDT (EI943) Alloy 06XHN28MT (EI628) Alloy Kh33TMMDU (EK63) Alloy KhN30MDB (EK77) Alloy CrN40B (EP337) Alloy KhN40M5T2GYUBR (EK173) Alloy CrN40MDB (EP937) Alloy CrN40MDTU (EP543U) Alloy CrN46B (EP350; 0Х20Н46B)

Designation

Name The value
Designation GOST Cyrillic 06ХН28МДТ
Designation GOST Latin 06XH28MDT
Transliteration 06HN28MDT
The chemical elements 06CrNi28CuДTe
Name The value
Designation GOST Cyrillic ЭИ943
Designation GOST Latin EI943
Transliteration EhI943
The chemical elements -

Description

Alloy 06HN28MDT is used: for the manufacture of castings of parts of metallurgical equipment; weldments, reactors, heat exchangers, pipelines, tanks, operating at temperatures up to +800 °C in sulfuric acid of different concentrations and in acidic and sulphate environments, with the exception of 55% acetic acid and phosphoric acid and other environments of increased aggressiveness; equipment for the production of complex mineral fertilizers, welding electrodes; for all connections of equipment of piping joints in the apparatus, connections, pipes, fittings etc. with the body of the device and repair of welded joints of equipment working in radioactive environments; as a cladding layer in the manufacture of hot-rolled dual-layer corrosion-resistant sheets; pipes tsentrobezhnolityh for the manufacture of the coils of the tubular furnace installations production of ammonia, hydrogen, ethylene, carbon disulphide, etc., operating in the temperature range 760−1060 °C and a pressure of 3.92 MPa (40 kgf/cm2); the welding wire SV-06XH28MDT.

Note

Alloy corrosion resistant high-temperature for iron-Nickel basis.

Standards

Name Code Standards
Castings with special properties (cast iron and steel) В83 KSt 81-033:2009
Pipes steel and connecting parts to them В62 GOST 11068-81, TU 1333-047-00220302-02, TU 14-3-1336-85, TU 14-3-318-75, TU 14-152-40-96, TU 1380-001-08620133-05, TU 14-158-135-2003, TU 14-3-822-79, TU 14-3-763-78, TU 14-3-822-2006
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Sheets and stripes В23 GOST 19903-74, GOST 19904-90, GOST 103-2006, GOST 19903-90
Metal forming. Forgings В03 GOST 25054-81, TU 14-1-1530-75, ST ЦКБА 010-2004
Sheets and stripes В33 GOST 4405-75, GOST 5582-75, GOST 7350-77, GOST 10885-85, TU 14-1-3144-81, TU 14-132-175-89
Tapes В34 GOST 4986-79, TU 14-1-3941-85
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 14-1-1214-75, TU 14-1-2214-77
Welding and cutting of metals. Soldering, riveting В05 OST 95 10441-2002, RD РТМ 26-07-233-79, TU 14-1-1325-75, TU 14-1-1382-75
Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004, ST ЦКБА 016-2005

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
GOST 5632-72 ≤0.06 ≤0.02 ≤0.035 ≤0.8 22-25 ≤0.8 26-29 The rest 2.5-3.5 ≤0.2 0.5-0.9 2.5-3 ≤0.2
KSt 81-033:2009 ≤0.06 ≤0.02 ≤0.035 ≤0.8 22-25 ≤0.8 26-29 The rest 2.5-3.5 - 0.4-0.7 2.5-3 -
Fe is the basis.
According to GOST 5632-72 the chemical composition is given for alloy 06ХН28МДТ.
According to KSt 81-033: 2009 the chemical composition is given for the alloy 06ХН28МДТЛ.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % d4 d y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air from 1050-1080 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
≤200 ≥216 ≥510 ≥36 - - ≥40 - ≤200
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥270 ≥620 ≥55 - - ≥78 ≥343 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- ≥230 ≥600 ≥23 - - ≥62 - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air from 1050-1080 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
200-500 ≥216 ≥510 ≥33 - - ≥35 - ≤200
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥210 ≥550 ≥45 - - ≥75 ≥343 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- ≥710 ≥750 ≥20 - - ≥42 - -
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Quenching in water or air at 1050-1100 °C (samples)
0.2-2 - ≥550 - ≥25 - - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥180 ≥550 ≥50 - - ≥60 ≥343 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- ≥750 ≥810 ≥15 - - ≥42 - -
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Quenching in water or air at 1050-1100 °C (samples)
0.2 - ≥550 - ≥13 - - - -
The sheet is 12 mm. Quenching in water from 1050 °C
- ≥150 ≥500 ≥45 - - ≥60 ≥343 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- ≥930 ≥950 ≥10 - - ≥40 - -
Sheet 16 mm. Quenching in water from 1080 °C
- ≥180 ≥250 ≥40 - - ≥45 ≥110 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- ≥1080 ≥1100 ≥3 - - - - -
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 or air from 1050-1080 °C
- - ≥540 ≥35 - - - - -
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 with 950-1080 °C
- ≥215 ≥540 ≥35 - - - - -
Sheet 16 mm. Quenching in water from 1080 °C
- ≥150 ≥180 ≥30 - - ≥40 ≥120 -
Rolled steel. Quenching in water from 1050 °C (indicated by the degree of deformation)
- - ≥1200 ≥2 - - - - -
Forgings up to 1000 mm. Quenching in water 1050-1100 °C
≥216 ≥510 ≥30 - - ≥30 - -
Sheet 16 mm. Quenching in water from 1080 °C
- ≥90 ≥100 ≥25 - - ≥40 ≥100 -
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1050-1080 °C
≥220 ≥520 ≥25 - - ≥40 - -
Sheet 16 mm. Quenching in water from 1080 °C
- - ≥50 ≥35 - - ≥40 ≥100 -
Tubular billet and pipes. Quenching in water with 950-1080 °C (in cross-section shows the thickness of the wall)
≥245 ≥540 ≥35 - - ≥50 ≥980 -
0.2-22 - ≥490 ≥30 - - - - -
The tubular billet. Quenching in water, oil or air from 1100-1150 °C
≥195 ≥490 ≥45 - - ≥70 - -
Tsentrobezhnolityh pipe outer diameter 85-320 mm. Quenching in water or air from 1100-1150 °C
≥700 ≥800 - - ≥12 - - -

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
d4 Elongation after rupture
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м a, 10-6 1/°С
100 191 - 13 - 109
200 186 - 15 - 129
300 179 - 17 - 136
400 171 - - - 144
500 161 - 22 - 149
600 156 - 24 - 153
700 151 - 25 - 168
800 145 - 26 - 163
0 - 7960 13 750 -
20 - 7960 13 750 -
900 - - - - 163
1100 - - - - 168

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity
a The coefficient of linear expansion
С Specific heat

Technological properties

Name The value
Weldability The alloy is welded by automatic argon arc welding with non-consumable electrode in a continuous mode, manual argon-arc welding with non-consumable electrode (filler or without filler material), combined welding methods. Allowed the use of manual arc welding with coated electrodes. To improve the overall corrosion resistance, resistance to the ICC and relieve residual stresses of the welded assemblies are subjected to hardening in air, 1050-1080 °C (aged for at least 2.5 minutes/mm of maximum wall thickness, but not less than 1 hour). Allowed for welding of the assemblies to conduct heat treatment at 950-970 °C, provided that resistance to the ICC.
Forging temperature Beginning - 1170 °C, the end of - 900 °C.
Features of heat treatment Products made of alloy for maximum corrosion resistance should be subjected to the annealing regime: heating to 1050-1080 °C, exposure with wall thickness up to 15 mm - 30 min, more than 15 mm - 30 min + 1 min per 1 mm max thickness cooling in water or air. The annealing products of alloy has not been subjected to welding, stress relieving should be carried out at 950 ±10 °C for 2 h, cooling in air. Annealing of weldments from the alloy to relieve stresses should be carried out at 1050±10 °C, hold for 2 h, cooling in air.
Surfacing For the argon arc and TIG welding of sealing and friction surfaces of parts of pipeline fittings are used electrodes and welding rods of alloy 06Х20Н10М3Д3С4Л po RD RTM 26-07-233-79. Before welding the parts must be subjected to preliminary heating in a furnace at a temperature of from 400 to +650 °C. To enhance the corrosion resistance of weld metal and relieve internal stresses after welding should be heat treatment of parts in the following mode: fit into the oven at temperatures up to +500 °C, heating from +950 to +1050 °C, exposure - 1.5 to 2 hours, cooling with the furnace.

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