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GOST 25054-81

GOST 25054−81 forgings of corrosion-resistant steels and alloys. General technical conditions (Changes No. 1−4)

GOST 25054−81
Group B03

INTERSTATE STANDARD

FORGINGS OF CORROSION-RESISTANT STEELS AND SPLAVA

General specifications

Forgings of corrosion-resistant steels and alloys.
General specifications

OKP 08 9380

Date of introduction 1983−01−01

Resolution of the USSR State Committee on standards of 21 December 1981 N 5513 date of introduction is established 01.01.83

Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)

EDITION with Amendments No. 1, 2, 3, 4, approved in March 1986, may 1987, March 1989, April 1990 (IUS 6−86, 8−87, 6−89, 7−90).


This standard applies to forgings with a diameter (thickness) of 1000 mm, manufactured by forging and hot forging from corrosion-resistant steel and alloy grades 20X13, 09KH16N4B, 07KH16N4B, 20KH17N2, 30CH13, 12H13, 14KH17N2, 08KH13, 07KH16N6, 08KH17N5M3, 08KH18G8N2T, 15KH18N12S4TJU, 08KH21N6M2T, 08KH22N6T, 10KH14G14N4T, 10X17H13M2T, 10H17N13M3T, 03KH17N14M3, 08KH17N15M3T, 12H18N9, 12KH18N9T, 04KH18N10, 08KH18N10T, 12KH18N10T, 03Х18Н11, 03KH21N21M4GB, 10Х23Н18, KHN65MV, KHN78T, 06HN28MDT, KHN32T intended for products of mechanical engineering.

(Changed edition, Rev. N 1).

1. CLASSIFICATION

1.1. Forgings depending on destination are divided into the groups listed in the table.1.

Table 1

   
Group of forgings
Applicability
I For details, the dimensions of which are accepted for design reasons (not based on strength) and not exposed to environment that causes intergranular corrosion
II
For lightly loaded parts that have a margin of safety than the design, and not exposed to environment that causes intergranular corrosion
C
For lightly loaded parts that have a margin of safety than the design, and which are exposed to the environment, causing intergranular corrosion
III
For lightly loaded parts that have a margin of safety than the design, and not exposed to environment that causes intergranular corrosion
C
For lightly loaded parts that have a margin of safety than the design, and which are exposed to the environment, causing intergranular corrosion
IV
For the manufacture of parts operating under conditions of complex stress state or subjected to dynamic influences and not exposed to environment that causes intergranular corrosion
IVК
For the manufacture of parts operating under conditions of complex stress condition or exposed to dynamic loads and environmental conditions that causes intercrystalline corrosion
V
For the manufacture of critical parts operating in conditions of complex stress state or subjected to dynamic influences and not exposed to environment that causes intergranular corrosion
V
For the manufacture of critical parts operating in conditions of complex stress condition or exposed to dynamic loads and environmental conditions that causes intercrystalline corrosion

1.2. Marking forgings shall consist of a group number, designation of the steel grade or alloy designation of the present standard.

Forging groups II, C, III, C after the steel grade or alloy optionally specify values hardness Brinell.

Forging groups IV, IVК, V, V with mechanical properties different from those given in table.2 of this standard, the designation after the grade of steel or alloy additionally indicate the values of the mechanical properties other than those described in this standard.

(Introduced later. Izm. N 1).

Examples of symbols


Forging group I of steel grade 08KH22N6T:

Gr. I 08KH22N6T GOST 25054−81


The same group III of steel grade 08KH22N6T hardness 140−200 HB:

Gr. III 08KH22N6T 140−200 HB GOST 25054−81


The same group V of steel grade 08KH22N6T with yield strength of ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)350 MPa, elongation ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)20% and impact strength ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)of 0.8 MJ/mГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4):

Gr. V 08KH22N6T — ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4) 350 MPa — ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)20% — KCUГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)0,8 MJ/mГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)GOST 25054−81


(Changed edition, Rev. N 1, 2).

2. TECHNICAL REQUIREMENTS

2.1. Forgings shall be manufactured in accordance with the requirements of this standard, standards or technical specifications working drawings for specific forgings made in accordance with GOST 3.1126−88.

The dimensions of the forgings must consider the machining allowances, tolerances on dimensions and technological overlaps established by agreement between manufacturer and consumer.

(Changed edition, Rev. N 3, 4).

2.2. On the surface of the forgings should not be mechanical damages and defects that reduce the strength, serviceability and detract from the appearance.

On the surface of the forgings undergoing machining, are not allowed defects exceeding the depth of 50% of the unilateral allowance for machining for forgings manufactured by stamping, and 75% for forgings, forging produced.

Allowed to NTD on forgings to establish requirements for surface defects with a depth greater than the allowance for machining, the requirements for their correction and control of fixed seats.

(Changed edition, Rev. N 2, 3).

2.3. On uncultivated surfaces of the forging surface defects, except for some dents from scale and nicks should be removed by gentle cutting and Stripping, the depth of which should not display the sizes of forgings for maximum deviations on the drawing.

Allowed to NTD on forgings to set higher requirements for the quality of machined surfaces of forgings.

2.4. Forgings should not have placenow, shrinkage looseness, cracks. Allowed to NTD on forgings to set the size, number and location of defects allowed.

2.5. Allowed to NTD on forgings to establish the need and method of cleaning from scale.

2.6. Mechanical properties of metal forgings with a diameter (thickness) up to 600 mm inclusive, groups IV, IVК, V, V after final heat treatment, a certain longitudinal samples, and the hardness of all groups, except group I must conform to table.2.

Table 2

                           
    Mechanical properties at +20 °C, not less
 
       

Elongation ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), %

The relative narrowing ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), %

The impact strength KCU, j/mГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)x10ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)(kgf·m/cmГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4))

 
        when the diameter (thickness) forgings and solid section, mm  
The class began
Steel grade

Yield strengthГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4),

MPa (kgf/mmГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4))

Limit etc-

ness ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), MPa
(kgf/mmГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4))

up to 200
over 200 up to 500
over 500 up to 1000
up to 200
over 200 up to 500
over 500 up to 1000
up to 200
over 200 up to 500
over 500 up to 1000
The hardness of BRI-
Nelly (on top of-
ness forgings), not more
Martin
Sitno
20X13
441 (45)
647 (66)
16
15
14
50
45
40
64 (6,5)
49 (5,0)
39 (4,0)
197−248
  30X13
588 (60)
735 (75)
12
11
10
40
38
35
39 (4,0)
34 (3,5)
29 (3,0)
235−277
  09KH16N4B
784 (80)
931 (95)
8
7
7
42
38
35
59 (6,0)
54 (5,5)
49 (5,0)
269−302
  07KH16N4B
690 (70)
882 (90)
14
12
11
55
45
40
88 (9,0)
69 (7,0)
59 (6,0)
269−302
  20KH17N2
666 (68)
813 (83)
15
13
12
40
35
30
59 (6,0)
54 (5,5)
49 (5,0)
248−293
Martin
Sitno — ferrite-
NY
12H13
392 (40)
617 (63)
18
16
15
50
44
40
74 (7,5)
59 (6,0)
49 (5,0)
187−229
  14KH17N2
539 (55)
686 (70)
15
13
12
40
35
30
59 (6,0)
54 (5,5)
49 (5,0)
248−293
Ferrite-
NY
08KH13
392 (40)
539 (55)
17
16
14
50
40
35
83 (8,5)
69 (7,0)
49 (5,0)
187−229
The superheater-
nano — Martin-
Sitno
07KH16N6
980 (100)
1176 (120)
13
12 12
50
50
50
69 (7,0)
69 (7,0)
69 (7,0)
341−415
  08KH17N5M3 833 (85)
1176 (120)
15 13 10
40
38
35
69 (7,0)
59 (6,0)
39 (4,0)
341−415
The superheater-
nite ferry — nice
15Х18Н12СЧТЮ
382 (39)
715 (73)
In agreement
  08KH18G8N2T
265 (27)
588 (60)
In agreement
  08KH21N6M2T
343 (35)
539 (55)
22
18
18
40
37
35
78 (8,0)
59 (6,0)
39 (4,0)
140−200
  08KH22N6T
343 (35)
539 (55)
20 19 18
40
37
35
78 (8,0)
59 (6,0)
39 (4,0)
140−200
The superheater-
magnetic
12X18H9T
196 (20)
510 (52)
40 37 35
48
44
40
-
-
-
170
  04KH18N10
157 (16)
441 (45)
40
39
38
50
47
45
-
-
-
179
  08X18H10
196 (20)
470 (48)
40
39
38
50
47
45
-
-
-
170
  08KH18N10T
196 (20)
490 (50)
38
36
35
52
46
40
-
-
-
179
  12KH18N10T
196 (20)
510 (52)
38
36
35
52
46
40
-
-
-
179
  03Х18Н11
176 (18)
441 (45)
40
40
40
55
48
45
-
-
-
179
  10KH14G14N4T
245 (25)
637 (65)
In agreement
  10X17H13M2T
196 (20)
510 (52)
38
36
30
50
47
45
-
-
-
200
  10H17N13M3T
196 (20)
510 (52)
38
36
30
50
45
40
-
-
-
200
  03KH17N14M3
176 (18)
470 (48)
40
38
35
55
48
45
-
-
-
179
  08KH17N15M3T
196 (20)
490 (50)
38
36
30
50
45
40
-
-
-
200
  12KH18N9
196 (20)
490 (50)
40
37
35
48
44
40
-
-
-
179
  03KH21N21M4GB
215 (22)
490 (50)
In agreement
  10Х23Н18
196 (20)
490 (50)
35
32
30
47
43
40
-
-
-
179
Alloy on Nickel-
howling based
KHN65MV
294 (30)
735 (75)
35
32
30
40
37
35
-
-
-
220
  KHN78T
196 (20)
588 (60)
30
27
25
40
37
35
-
-
-
200
The alloy on the iron — Nickel-
howling based
06HN28MDT
216 (22)
510 (52)
36
33
30
40
35
30
-
-
-
200
  KHN32T
176 (18)
470 (48)
36
33
30
40
37
35
-
-
-
-

Forging groups IV and IVК hardness value acceptance sign is not.

For determining the mechanical properties of forgings in the transverse, tangential or radial samples allowed a reduction in the rate of the mechanical properties in accordance with table.3.

Table 3

         
  The permissible reduction in the rate of mechanical properties, %
Mechanical properties
for control samples for radial samples for tangential specimens of forgings with a diameter of
      up to 300 mm
over 300 mm
Tensile strength
10
10
5
5
Yield strength
10
10
5
5
Elongation
50
35
25
30
The relative narrowing
40
35
20
25
Toughness
50
40
25
30


(Changed edition, Rev. N 1, 2, 3, 4).

2.7. Mechanical properties of forgings like rings, manufactured by rolling, must meet table.2.

2.8. Properties of forgings made of steel produced by electroslag remelting, vacuum arc remelting and refining other smelting methods, should be established by agreement between manufacturer and consumer, in this case the plastic properties and impact toughness should be not less than given in table.2 for steels with open smelting.

2.9. Chemical composition of steels and alloys for forgings must comply with trebovaniye 5632−72.

2.10. Forgings of steels and alloys stipulated by GOST 5632−72, as well as alloys of KHN32T, KHN78T and KHN65MV should be resistant against intergranular corrosion.

(Changed edition, Rev. N 2).

2.11. Forgings shall be subjected to heat treatment. The heat treatment is given in the Appendix.

The number of heat treatments should not be more than two.

Forgings, since the heat treatment edit in a cold or heated condition, needs to be further heat treated to relieve internal stresses.

Additional leave for the heat treatment is not considered.

2.12. Group of forgings, and requirements for macro — and microstructure, mechanical properties at elevated temperatures (ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4), ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)), internal defects, toughness at negative temperatures shall be indicated in the reference document on a specific forging.

3. ACCEPTANCE RULES

3.1. Forging accept batches or individually

The party should consist of forgings of one steel grade, manufactured by one drawing, in accordance with the terms of the acquisition are given in table.4 and issued a document about quality that contains:

Table 4

       
Group of forgings
The conditions of acquisition of party
Check
Sample
I
Forgings of one steel grade
-
-
II
Forgings of one steel grade, together the last heat treatment Hardness
5% of the party, but not less than five forgings
C
  Resistance to intergranular corrosion
One solid forging
    Hardness
5% of the party, but not less than five forgings
III
Forgings of one steel grade, together the last heat treatment according to the same mode Hardness
100%
C
  Resistance to intergranular corrosion
One solid forging
    Hardness
100%
IV
Forgings of one steel melting together the last heat treatment Tensile test
For party up to 100 pieces — one solid forging.
    Test for impact strength
For party of more than 100 pieces 1% from the party, but at least two forgings
    Hardness
100%
IVК
Forgings of one steel melting together the last heat treatment Resistance to intergranular corrosion
One solid forging
    Tensile test
For party up to 100 pieces — one forging;
    Test for impact strength
for party of more than 100 pieces 1% from the party, but at least two forgings
    Hardness
100%
V
Taken individually, each forging Tensile test
100%
    Test for impact strength
 
V
  Resistance to intergranular corrosion
100%
    Tensile test
 
    Test for impact strength
 



the name and trademark of manufacturer;

order number;

the weight and number of forgings;

the drawing number or the cipher forgings;

the chemical analysis results and the steel grade or alloy;

the melting number, batch number, and a group of forgings;

the results of mechanical tests;

the results of tests on the intergranular corrosion for forgings groups C, C, IVК and V;

heat treatment regime;

stamp of technical control;

the designation of this standard.

Allowed to combine a batch of forgings of similar configuration and size, made of steel of the same brand and different drawings.

(Changed edition, Rev. N 1, 4).

3.2. Appearance, size and shape test on each forging party.

3.3. To check the quality of the forgings selected sample in accordance with table.4.

At the request of the consumer forgings, selected in accordance with table.4, is subjected to ultrasonic inspection. Standards ultrasonic testing according to GOST 24507−80. Thus check at least 50% of the volume of controlled forging.

The sample for testing macro — and microstructure, internal defects, toughness at negative temperatures are indicated in NTD for specific forgings.

(Changed edition, Rev. N 2, 4).

3.4. Brand and chemical composition of the metal forgings are established on the basis of the document about the quality of the metal workpieces.

In the manufacture of forgings from metal, investment casting manufacturer of forgings, the chemical composition of the metal is determined by plavonia analysis of ladle samples. Allowed to carry out chemical analysis on metal forging.

3.5. If unsatisfactory test results on at least one sample for any of the indicators it is carried out re-test at twice the number of samples taken from forgings of the same party.

4. TEST METHODS

4.1. Appearance inspection of forgings is carried out visually, without the use of magnifying devices. Allowed to NTD on forgings to establish other methods to control the outer surface.

4.2. The number of samples for tests of metal forgings tensile two, the toughness of two, the intergranular corrosion of four, of which two samples should be control.

4.3. Mechanical properties of metal forgings groups IV, IVК, V and V are checked for longitudinal, transverse, tangential or radial samples in accordance with the requirements for a specific forging.

4.4. Samples for the determination of mechanical properties for the groups IV and resistance to intergranular corrosion of forgings groups C, C, IVК is cut from the inlet to the sample or from the body of the forgings, and forging groups V and V are cut from the allowance provided for each forging.

Allowed NTD to forgings, with a length of over 3 m, to establish overlaps on the samples to determine mechanical properties at both ends of the forging.

Allowed samples for mechanical testing of forgings of groups IV and IVК cut from samples of the same or a larger cross-section, separately forged from metal of the same melting and similar treatment for forgings.

In this case, the sample must be termoobrabotki with the forging of the party.

(Changed edition, Rev. N 2).

4.5. Samples for the determination of the resistance against intergranular corrosion forgings groups C and G allowed to cut from separately forged test of metal of the same melting, held a joint heat treatment.

4.6. The shape, size and location of the inlet for samples is determined by drawing forgings.

In the manufacture of a single forging from ingot overlap on the sample must be from the profitable parts.

4.7. The overlap on the sample must be separated from the forging without heating mechanical cutting.

4.8. Samples for mechanical test are not allowed to be subjected to a further heat treatment or heating.

4.9. Samples for mechanical testing of forgings of cylindrical and prismatic shape is cut from the inlet or from the body of the forging on the distance of ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)the radius or ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)diagonal from the outer surface of the forging.

When cutting samples from the reamed or hollow forgings with wall thickness up to 100 mm samples cut at a distance ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)of the wall thickness of the forging, and when the thickness is over 100 mm at a distance ГОСТ 25054-81 Поковки из коррозийно-стойких сталей и сплавов. Общие технические условия (с Изменениями N 1-4)of the wall thickness of the forging from the outer surface.

4.10. In the manufacture of transverse or tangential specimens of the axis should pass the same distance as that for the longitudinal samples.

4.11. Place cuttings samples from forgings and represenational non-cylindrical shape indicated in the drawing forgings.

4.12. By agreement with the consumer allowed to cut samples from the surface of the forging at a distance that excludes the influence of surface defects or from the centre.

4.13. Mechanical properties of forgings like rings, manufactured by rolling, defined on the tangential samples.

4.14. The tensile test is carried out according to GOST 1497−84 on cylindrical samples 10 mm in diameter with design length of 50 mm.

Allowed to conduct tests on samples with a diameter of 6 or 5 mm with an estimated length of 30 or 25 mm, respectively.

(Changed edition, Rev. N 2).

4.15. Impact strength testing is carried out according to GOST 9454−78 the samples of a type 1.

4.16. Hardness on the Brinell hardness is carried out according to GOST 9012−59.

Allowed the use of other methods of determining hardness, providing the required accuracy.

4.17. Chemical analysis carried out according to GOST 28473−90, GOST 12344−88*, GOST 12345−2001,12346−78 GOST, GOST 12347−77, 12348−78 GOST, GOST 12349−83, 12350−78 GOST, GOST 12351−81**, 12352−81 GOST, GOST 12353−78, 12354−81 GOST, GOST 12355−78, 12356−81 GOST, GOST 12357−84, 12358−2002 GOST, GOST 12359−99, 12360−82 GOST, GOST 12361−2002, 12362−79 GOST, GOST 12363−79, 12364−84 GOST, GOST 12365−84 or by another method ensuring the accuracy of the determination under specified standards.
______________
* On the territory of the Russian Federation GOST 12344−2003;
** On the territory of the Russian Federation GOST 12351−2003. — Note the manufacturer’s database.

(Changed edition, Rev. N 1).

4.18. Samples for determining the chemical composition of the steel forgings are selected according to GOST 7565−81.

4.19. The test of resistance to intergranular corrosion is carried out according to GOST 6032−89*.
________________
* On the territory of the Russian Federation GOST 6032−2003, here and hereafter. — Note the manufacturer’s database.

For alloy grade KHN78T test conducted by the method agreed between the manufacturer and consumer; for the alloy KHN65MV — on samples after provoking heating at 800 °C for 30 min in a boiling 30% solution of sulfuric acid (GOST 4204−77) supplemented with 40 g/l of iron sulfate (GOST 9485−74) within 48 h; grade KHN32T — AM by the method of GOST 6032−89.

4.20. Ultrasonic inspection of forgings is carried out in accordance with the method of the manufacturer of forgings, selected according to GOST 24507−80.

(Changed edition, Rev. N 4).

4.21. Control methods of macro — and microstructure, internal defects, mechanical properties at elevated temperatures, test toughness at negative temperatures are indicated in NTD for specific forgings.

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Forgings shall be marked in accordance with the drawing at a specific forging.

The marking must be clearly legible and contain:

trademark of the manufacturer;

the mark of the technical control Department;

the drawing number of the part or the cipher forgings;

grade of steel;

the room melt;

the group number;

the number of forgings (V and V groups of forged pieces).

Labels and markings can be printed or written indelible ink.

If you cannot marking of forgings due to the configuration and size of the batch of forgings shall be supplied with a label with the requisite marking and the indication of the number of forgings in the party.

5.2. The markings stamped forgings established in NTD for specific forgings.

5.3. Transport marking of forgings must comply with GOST 14192−96.

5.4. Packing of the forgings shall be specified in the reference document on forgings and to ensure the safety of forgings from mechanical damage.

Forgings weighing up to 10 kg are transported in wooden boxes, manufactured according to GOST 18617−83, 10198−91 GOST and other normative and technical documentation.

5.5. Forgings shall be transported by all modes of transport in open vehicles in accordance with transportation rules and conditions of loading and fastening of cargoes effective for this transport.

5.6. Forgings should be kept in conditions precluding the possibility of mechanical damage.

(Changed edition, Rev. N 2).

APPLICATION (recommended)

APP
Recommended

         
Steel grade
20X13
30X13
07KH16N4B
09KH16N4B
The mode of heat treatment
Quenching 1000−1050 °C in air or in oil, leave 660−770 °C, air cooling
Quenching 1000−1050 °C in oil, the release of 700−750 °C, air cooling
Hardening 1050 °C into oil, leave 650 °C stage 1, the release of 635 °C — 2 stage, air cooling
Heating 1140 °C, exposure 5−5,5 h, air cooling, vacation 600−620 °C, air cooling; tempering 1030−1050 °C, air cooling or oil, the release of 600−620 °C, air cooling; tempering 1030−1050 °C, air cooling or oil, the release of 600−620 °C, air cooling



Continued

         
Steel grade
20KH17N2
12H13
14KH17N2
08KH13
The mode of heat treatment
Quenching 1000−1050 °C in oil, leave 680−700 °C, air cooling
Quenching 1000−1050 °C in oil, the release of 700−790 °C With air cooling
Hardening 980−1020 °C in oil, leave 680−700 °C, air cooling
Quenching 1000−1050 °C in oil, leave 700−780 °C, cooling in oil



Continued

         
Steel grade
07KH16N6
08KH17N5M3
08KH18G8N2T
15KH18N12S4TJU
The mode of heat treatment
Hardening 1000 °C in water, air, cold treatment of 70 °C, 2 h, aging 380−400 °C, air cooling
Annealing (960±10) °C in air followed by cold treatment at -70 °C, exposure 2 h, aging 380−400 °C, 1 h, air cooling
Hardening of 950−1040 °C in water
Quenching 950 °C in water



Continued

       
Steel grade
08KH21N6M2T
08KH22N6T
10KH14G14N4T
The mode of heat treatment
Quenching 1000−1050 °C in water
Quenching 1000−1050 °C in water
Hardening 1000−1080 °C in water



Continued

       
Steel grade
10X17H13M2T
10H17N13M3T
03KH17N14M3
The mode of heat treatment
Annealing 1050−1100 °C in water or air
Annealing 1050−1100 °C in water or air
Hardening 1080−1100 °C in water



Continued

       
Steel grade
08KH17N15M3T
12KH18N9
12X18H9T
The mode of heat treatment
Annealing 1050−1100 °C in water or air
Annealing 1050−1100 °C in water
Annealing 1050−1100 °C in air or in water



Continued

       
Steel grade
04KH18N10
08X18H10
08KH18N10T
The mode of heat treatment
Annealing 1050−1100 °C in water
Annealing 1050−1100 °C in water or air
Annealing 1050−1100 °C in water or air



Continued

       
Steel grade
12KH18N10T
03Х18Н11
03KH21N21M4GB
The mode of heat treatment
Annealing 1050−1100 °C in water or air
Annealing 1050−1100 °C in water or air
Hardening 1060−1080 °C in water



Continued

       
Steel grade
10Х23Н18
KHN65MV
KHN78T
The mode of heat treatment
Quenching 1000−1050 °C in water or air
Annealing (1070±20) °C in water
Hardening 980−1020 °C in water or air



Continued

     
Steel grade
06HN28MDT
KHN32T
The mode of heat treatment
Annealing 1050−1100 °C in water or air
Hardening 1100−1150 °C in water or air



APP. (Changed edition, Rev. N 1).