GOST 23705-79
GOST 23705−79 Bars hot rolled and forged of heat-resistant alloys. Specifications (with Change No. 1)
GOST 23705−79
Group В32
INTERSTATE STANDARD
BARS HOT ROLLED AND FORGED OF HEAT-RESISTANT ALLOYS
Specifications
Hot-rolled and forged bars of heat resistant alloys. Specifications
ISS 77.140.60
OKP 09 6400
Date of introduction 1981−01−01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR
2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from
3. REFERENCE STANDARD TECHNICAL DATA
| The designation of the reference document referenced |
Item number |
| GOST 1497−84 |
4.6 |
| GOST 5632−72 |
2.2 |
| GOST 7564−97 |
4.4 |
| GOST 7565−81 |
3.4, 4.3 |
| GOST 7566−94 |
3.2, 3.4, 5.1 |
| GOST 9012−59 |
4.5 |
| GOST 9454−78 |
4.8 |
| GOST 9651−84 |
4.6 |
| GOST 10145−81 |
4.7 |
| GOST 10243−75 |
2.5, 4.10 |
| GOST 12344−2003 |
4.3 |
| GOST 12345−2001 |
4.3 |
| GOST 12346−78 |
4.3 |
| GOST 12347−77 |
4.3 |
| GOST 12348−78 |
4.3 |
| GOST 12349−83 |
4.3 |
| GOST 12350−78 |
4.3 |
| GOST 12351−2003 |
4.3 |
| GOST 12352−81 |
4.3 |
| GOST 12353−78 |
4.3 |
| GOST 12354−81 |
4.3 |
| GOST 12355−78 |
4.3 |
| GOST 12356−81 |
4.3 |
| GOST 12357−84 |
4.3 |
| GOST 12358−2002 |
4.3 |
| GOST 12359−99 |
4.3 |
| GOST 12360−82 |
4.3 |
| GOST 12361−2002 |
4.3 |
| GOST 12362−79 |
4.3 |
| GOST 12363−79 |
4.3 |
| GOST 12364−84 |
4.3 |
| GOST 15846−79 |
5.3 |
| GOST 17745−90 |
4.11 |
| GOST 21120−75 |
4.9 |
| GOST 22411−77 |
1.2, 1.3, 1.4 |
| GOST 22838−77 |
2.6, 4.10 |
| GOST 24597−81 |
5.3 |
| GOST 28473−90 |
4.3 |
4. Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)
5. EDITION with Change No. 1, approved in June 1987 (IUS 10−87)
This standard applies to hot-rolled and forged bars of heat resistant alloys Nickel-based open method of melting, vacuum arc remelting and vacuum induction melting, and plasma melting followed by vacuum arc remelting.
Indicators of technical level established by this standard are intended for the highest quality.
(Changed edition, Rev. N 1).
1. CLASSIFICATION AND ASSORTMENT
1.1. The bars are subdivided:
for appointment to the subgroups:
for hot forming a,
for cold machining — b;
as the surface of round bars:
turned — On,
without turning.
1.2. Maximum size of bars and groups the accuracy of rolling hot-rolled bars depending on the brand of alloy to match the table.1.
Table 1
| Grade | Maximum size of bars, mm | |||||
| HR | Turned round | Forged | ||||
| group precision rolling churchyard 22411 |
round | square | ||||
| 1 | 2 | 3 |
||||
| KHN77TJU (ЭИ437А) | - | 10 to 55 incl. |
- | From 20 to 43 incl. |
- | - |
| HN77TYUR (EI437BU) |
- | 10 to 55 incl. |
10 to 55 incl. |
From 20 to 43 incl. |
- | - |
| HN77TYUR-VD (EI437BU-VD) |
From 20 to 45 incl. |
From 20 to 45 incl. |
- | From 20 to 43 incl. |
- | - |
| KHN77TJURU (ЭИ437БУ) |
- | - | - | - | From 60 to 220 incl. |
From 60 to 220 incl. |
| KHN77TJURU-VD (ЭИ437БУ-VD) |
- | - | - | - | From 100 to 220 incl. |
From 80 to 220 incl. |
| KHN77TJURU-PD (ЭИ437БУ-PD) |
- | - | - | - | From 100 to 220 incl. |
From 80 to 220 incl. |
| KHN67MVTJU-VD (ЭП202-VD) |
- | - | From 15 to 55 incl. |
- | From 60 to 100 incl. |
From 60 to 180 incl. |
| ХН65ВМТЮ (ЭИ893) |
- | From 35 to 55 incl. |
From 20 to 32 incl. |
From 28 to 43 incl. |
From 60 to 125 incl. |
From 60 to 125 incl. |
| ХН65ВМТЮ-VD (ЭИ893-VD) |
- | From 35 to 55 incl. |
From 20 to 32 incl. |
- | From 60 to 125 incl. |
From 60 to 125 incl. |
| ХН65ВМТЮ-VI (ЭИ893-VI) |
- | 32−55 incl. |
- | From 28 to 43 incl. |
From 60 to 125 incl. |
From 60 to 125 incl. |
| KHN70VMTJUF (ЭИ826) |
- | From 35 to 55 incl. |
From 20 to 32 incl. |
From 20 to 43 incl. |
- | - |
| KHN70VMTJUF-VD (ЭИ826-VD) |
From 20 to 42 incl. |
From 35 to 40 incl. |
From 20 to 32 incl. |
From 20 to 40 incl. |
- | - |
| KHN62MVKJU (ЭИ867) |
- | - | From 35 to 55 incl. |
From 20 to 43 incl. |
- | - |
| KHN62MVKJU-VD (ЭИ867-VD) | - | From 35 to 40 incl. |
From 13 to 32 incl. |
From 20 to 40 incl. |
- | - |
| From 45 to 35 incl. |
||||||
| KHN56VMKJU-VD (ЭП109-VD) |
- | - | From 24 to 45 incl. |
From 28.5 to 40 incl. |
- | - |
| KHN55VMTKJU-VD (ЭИ929-VD) | - | From 35 to 40 incl. |
From 20 to 32 incl. |
From 20 to 40 incl. |
- | - |
| From 45 to 55 incl. |
||||||
| KHN70VMTJU (ЭИ617) |
- | From 20 to 55 incl. |
- | From 20 to 43 incl. |
- | - |
| KHN70VMTJU-VI (ЭИ617-VI) |
From 20 to 45 incl. |
- | From 10 to 18 incl. |
From 20 to 40 incl. |
- | - |
| KHN70MVTJUB (ЭИ598) |
- | From 20 to 55 incl. |
- | From 20 to 43 incl. |
- | - |
| ХА70МВТЮБ-VI (ЭИ598-VI) |
From 20 to 45 incl. |
- | 8 to 10 incl. |
From 20 to 40 incl. |
- | - |
| KHN70MVTJUB-VD (ЭИ598-VD) |
From 20 to 55 incl. |
- | - | From 20 to 40 incl. |
- | - |
| KHN75VMJU (ЭИ827) |
- | 32−55 incl. |
From 20 to 32 incl. |
From 20 to 43 incl. |
- | - |
| HN51VMTJUKFR-VD (ЭП220-VD) |
- | - | From 35 to 45 incl. |
From 34 to 40 incl. |
- | - |
| HN58VMKJUR-VD (ЭП238-VD) |
- | - | From 34 to 42 incl. |
From 20 to 40 incl. |
- | - |
| HN60MJUVT-VD (ЭП539-VD) |
- | - | From 32 to 45 incl. |
From 20 to 40 incl. |
- | - |
Notes:
1. For bars with diameter from 10 to 55 mm of alloy HN77TYUR (EI437BU) and bars with diameter from 20 to 45 mm of alloy HN77TYUR-VD (EI437BU-VD) group, the accuracy of rolling is indicated in the order. In the absence of guidance for alloy HN77TYUR (EI437BU) set 3rd group, and for the alloy HN77TYUR-VD (EI437BU-VD) — 2-St group of accuracy of rolling.
2. For alloys KHN77TJURU (ЭИ437БУ), KHN77TJURU-VD (ЭИ437БУ-VD), KHN67MVTJU-VD (ЭП202-VD), ХН65ВМТЮ (ЭИ893), ХН65ВМТЮ-VD (ЭИ893-VD), KHN77TJURU-PD (ЭИ437БУ-PD) can be manufactured from hot rolled bars with diameters from 60 to 65 mm with maximum deviations according to GOST 22411 for forged rods.
3. At the request of the customer can be manufactured, turned bars in sizes not listed in the table.
4. Bars with a diameter 8 and 9 mm produce extreme deviations corresponding to the 3rd group exactly for bars with diameter 10 mm.
(Changed edition, Rev. N 1).
1.3. Shape, dimensions, limit deviations hot-rolled and forged bars shall meet the requirements of GOST 22411.
For alloys KHN77TJURU (ЭИ437БУ) and KHN77TJURU-VD (ЭИ437БУ-VD) forged rods with a size of 205 to 220 mm make extreme deviations, plus 10, minus 5 mm.
1.4. Bars for machined tolerances for diameter ±0.4 mm, the curvature is not more than 0.2% of the length, ovality is not more than the maximum deviations by diameter, length — graveyard 22411 for hot rolled bars.
Examples of symbols
Bars and rods, hot-rolled, diameter 42 mm, 2nd group precision rolling of alloy HN77TYUR brand, is designed for hot forming:
Bars and rods, forged, with a side of a square 180 mm, of alloy grade KHN77TJURU-VD, designed for cold machining:
Rods machined, with a diameter of 25 mm, of alloy grade KHN55VMTKJU-VD, designed for hot forming:
The range 0−25-KHN55VMTKJU-VD-GOST 23705−79
Sec. 1. (Changed edition, Rev. N 1).
2. TECHNICAL REQUIREMENTS
2.1. Bars hot rolled and forged of heat-resistant alloys must be made in accordance with the requirements of this standard.
2.2. The chemical composition of the alloys HN77TYUR (EI437BU), HN77TYUR-VD (EI437BU-VD), KHN77TJURU (ЭИ437БУ), KHN77TJURU-VD (ЭИ437БУ-VD), KHN77TJURU-PD (ЭИ437БУ-PD), KHN67MVTJU-VD (ЭП202-VD), ХН65ВМТЮ (ЭИ893), ХН65ВМТЮ-VD (ЭИ893-VD), ХН65ВМТЮ-VI (ЭИ893-VI), KHN70VMTJUF (ЭИ826), KHN70VMTJUF-VD (ЭИ826-VD), KHN70VMTJU (ЭИ617), KHN70VMTJU-VI (ЭИ617-VI), KHN62MVKJU (ЭИ867), KHN62MVKJU-VD (ЭИ867-VD), KHN56VMKJU-VD (ЭП109-VD), KHN55VMTKJU-VD (ЭИ929-VD), KHN75VMJU (ЭИ827), KHN77TJU (ЭИ437А), KHN70MVTJUB (ЭИ598), KHN70MVTJUB-VI (ЭИ598-VI), KHN70MVTJUB-VD (ЭИ598-VD) should sootvetstvovat 5632, grades HN51VMTJUKFR-VD (ЭП220-VD), HN58VMKJUR-VD (ЭП238-VD), HN60MJUVT-VD (ЭП539-VD) table 1A.
Table 1A
| Name brand of alloy | Mass fraction of elements, % | |||||||
| Carbon | Silicon | Manganese |
Chrome | Nickel | Titan | Aluminium | Tungsten | |
| no more |
||||||||
| HN58VMKJUR-VD (ЭП238-VD) |
0,08 | 0,4 | 0,3 | 7,5−9,0 | DOS. | - | 6,1−6,7 | 6,0−8,0 |
| HN60MJUVT-VD (ЭП539-VD) |
0,04−0,09 | 0,5 | 0,5 | 17,0−19,0 | DOS. | 2.0 to 3.0 | For 3.0−4.0 | 2,5−4,0 |
| HN51VMTJUKFR-VD (ЭП220-VD) |
0,08 | 0,5 | 0,5 | 9,0−12,0 | DOS. | 2,2−2,9 | 3,9−4,8 | Of 5.0−7.0 |
Extension table 1A
| Name brand of alloy | Mass fraction of elements, % | |||||||||
| Molybdenum | Niobium | Vanadium | Cobalt | Copper | Bor | Cerium | Iron |
Sulfur | Phosphorus | |
| no more | ||||||||||
| HN58VMKJUR-VD (ЭП238-VD) |
3,0−5,5 | - | - | 13,5−16,0 | 0,07 | 0,02 | 0,02 | 1,0 | 0,010 | 0,015 |
| HN60MJUVT-VD (ЭП539-VD) |
Of 5.0−7.0 | - | - | - | 0,07 | 0,02 | 0,02 | 4,0 | 0,010 | 0,015 |
| HN51VMTJUKFR-VD (ЭП220-VD) |
Of 5.0−8.0 | - | 0,2−0,8 | 14,0−16,0 | 0,07 | 0,02 | - | 3,0 | 0,009 | 0,015 |
Notes:
1. Boron and cerium are introduced by calculation and by chemical analysis not specified.
2. For the alloy HN60MJUVT-VD (ЭП539-VD) variance is allowed for the carbon to minus 0.02 percent.
3. Mass fraction of residual elements — according to GOST 5632.
4. Permissible deviations in chemical composition in ready-to-hire — according to GOST 5632.
For alloys EI437BU and EI437BU-VD tolerances for the mass fraction of titanium +0.1%, aluminium +0,05%.
Allowed the presence of antimony is not more than 0.001%, tin — not more than 0.001%, bismuth not more than 0.0001%, arsenic — not more than 0.005%; the norm before
(Changed edition, Rev. N 1).
2.3. The bars are made without heat treatment.
2.4. On the surface of bars of the subgroup and should not be unchained and folded cracks, rolling shells, sunsets, sekulow, rolled or uninhibited dirt and flaws. Defects should be removed by gentle cutting or Stripping. The width of Stripping shall be not less than six times depth. The depth of Stripping shall not withdraw the rods beyond the negative maximum deviations.
On the surface of bars allowed without Stripping some small risks, the prints, rabiza not displaying the bars for tolerances for diameter or thickness.
On the surface of rods of the sub-group b are allowed without Stripping local defects, not exempting bars beyond the amount of the limit deviations on size, counting from the actual size.
Additional requirements to the surface quality of machined rods is determined by agreement between manufacturer and consumer.
2.5. The macrostructure of bars without heat treatment should not have traces of shrinkage, podsadecki porosity, voids, cracks, slag and foreign inclusions, delaminations, scabs, visible without using the magnifying devices.
Common spotted liquation forged and rolled bars with diameter 60 mm and up alloy ХН65ВМТЮ-VD (ЭИ893-VD) must not exceed 2 points on the scale N 3B GOST 10243.
2.6. The macrostructure and fracture of heat-treated samples from bars with a diameter of 20−25 mm shall conform to the following standards 22838:
a) General banded heterogeneity in the macrostructure of not more than 2 points (scale No. 3);
b) various-grained macrostructure — no more than 3 points (scale No. 4, first column), while for bars intended for hot forming, if raznozernistoy 1 point allowed determination for the first and second columns (scale No. 4);
C) various-grained macrostructure with a shared banded heterogeneity: not more than 2 points, alloy HN77TYUR (EI437BU), HN77TYUR-VD (EI437BU-VD), KHN77TJU (ЭИ437А) — no more than 3 points (scale N 5, first column);
d) grain size in the macrostructure of not more than 3 points, and for alloys KHN56VMKJU-VD (ЭП109-VD), KHN62MVKJU-VD (ЭИ867-VD), HN60MJUVT-VD (ЭП539-VD), HN51VMTJUKFR-VD (ЭП220-VD), KHN75VMJU (ЭИ827) — not more than 3.5 points (scale No. 6);
d) stratification in breaking is not allowed;
e) the degree of development of General banded heterogeneity in the fracture must not exceed the respective traits.3A;
W) alloys ХН65ВМТЮ (ЭИ893) and KHN67MVTJU-VD (ЭП202-VD) verification on the macrostructure and fracture is not exposed.
2.7. Mechanical properties and hardness, some samples of heat-treated workpieces must conform to the standards specified in table.2.
Table 2
| Grade | The recommended mode of heat treatment of billets for the manufacture of samples | The- pen — test tour- Tania, °C |
Temporary resistance |
Limit current |
Take |
Take |
Impact strength |
Hardness | |
| not less than |
Indentation diameter, mm |
The number of hardness HB | |||||||
| KHN77TJU (ЭИ437А) | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (700±10) °C, exposure time 16 h, air cooling | 20 | - | - | - | - | - | 3,4−3,8 | 321−255 |
| 700 |
610 (62) |
- | 5 | 12 | - | - | - | ||
| HN77TYUR (EI437BU) |
20 | - | - | - | - | - | 3,4−3,8 | 321−255 | |
| HN77TYUR-VD (EI437BU-VD) |
700 | 740 (75) | - | 15 | 20 | - | - | - | |
| KHN77TJURU (ЭИ437БУ) | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at 750−790 °C, exposure time 16 h, air cooling |
20 | 980 (100) | 640 (65) | 12 | 14 | 29,4 (3,0) | 3,4−3,75 | 321−262 |
| KHN77TJURU-VD (ЭИ437БУ-VD) KHN77TJURU-PD (437БУ-PD) |
Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at 750−790° C, exposure time 16 h, air cooling |
20 | 980 (100) | 670 (68) | 13 | 16 | 29,4 (3,0) | 3,4−3,75 | 321−262 |
| KHN67MVTJU-VD (ЭП202-VD) |
Annealing at 1100−1150 °C, maintained for 5 h, cooled in air; aging at 800−850 °C, exposure for 10 h, air cooling |
20 | 930 (95) | 550 (56) | 16 | 18 | 34,3 (3,5) | 3,3−3,9 | 341−241 |
| ХН65ВМТЮ (ЭТ893) ХН65ВМТЮ-VI (ЭИ893-VI) |
1. Annealing at (1170±10) °C, exposure 2 h, air cooling, aging at (800±10) °C, exposure 12 h, air cooling | 20 | 830 (85) | 490 (50) | 20 | 25 | 58,8 (6,0) |
- | - |
| 750 | 640 (65) |
- | 11 | 15 | - | - | - | ||
| 2. Annealing at (1170±10) °C, exposure 2 h, air cooling, speed leave with (1000±10) °C, exposure 4 hours, cooling with the oven up to (900±10) °C, exposure for 8 h, cooling with the furnace to (850±10) °C, exposure 15 h, air cooling | 20 | 830 (85) | 490 (50) | 20 | 25 | 58,8 (6,0) |
- | - | |
| 750 | 640 (65) |
- | 11 | 15 | - | - | - | ||
| ХН65ВМТЮ-VD (ЭИ893-VD) |
Heating up to (1020±10) °C, exposure to 1.5 h, air cooling, heating (1160±10) °C, exposure 2 h, air cooling; heating (1000±10) °C, exposure 4 hours, air cooling; heating (900±10) °C, exposure time 8 h, air cooling; heating (820±10) °C, exposure 15 h, air cooling | 20 | 830 (85) | 490 (50) | 20 | 22 | 58,8 (6,0) |
- | - |
| 750 | 640 (65) |
- | 20 | 20 | - | - | - | ||
| KHN70VMTJUF (ЭИ826) |
Annealing at (1210±10) °C, exposure 2 h, air cooling, heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 20 | - | - | - | - | - | 3.3 V-3.7 V | 341−299 |
| 850 |
590 (60) | - | 6 | 9 | - | - | - | ||
| KHN70VMTJUF-VD (ЭИ826-VD) | 20 | - | - | - | - | - | 3.3 V-3.7 V | 341−299 | |
| 850 | 590 (60) |
- | 8 | 12 | - | - | - | ||
| KHN62MVKJU (ЭИ867) | Quenching (1220±10) °C, exposure for 4−6 h, cooling in air; aging at (950±15) °With, exposure time 8 h, air cooling | 20 | - | - | - | - | - | 3,25−3,6 | 352−285 |
| 900 |
570 (58) |
- | 6 | 9 | - | - | - | ||
| KHN62MVKJU-VD (ЭИ867-VD) |
Quenching (1220±10) °C, exposure for 4−6 h, cooling in air; aging at (950±15) °With, exposure time 8 h, air cooling | 20 | - | - | - | - | - | 3,25−3,6 | 352−285 |
| 900 |
570 (58) |
- | 8 | 12 | - | - | - | ||
| KHN75VMJU (ЭИ827) | Annealing at (1200±10) °C, exposure of 6−8 hours, air cooling, aging at 900−950 °With, exposure time 8 h, air cooling | 20 |
- | - | - | - | - | 3,4−3,8 | 321−255 |
| 850 |
590 (60) |
- | 6 | 9 | - | - | - | ||
| KHN70VMTJU (ЭИ617) | Annealing at (1190±10) °C, exposure 2 h, air cooling; heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 20 |
- | - | - | - | - | 3.3 V-3.7 V | 341−299 |
| 800 |
670 (68) |
- | 3 | 8 | - | - | - | ||
| KHN70VMTJU-VI (ЭИ617-VI) |
20 |
- | - | - | - | - | 3.3 V-3.7 V | 341−299 | |
| 800 |
690 (70) |
- | 7 | 10 | - | - | - | ||
| KHN70MVTJUB (ЭИ598) | Annealing at (1200±10) °C, maintained for 5 h, air cooling; heating to (1070±10) °C, exposure time 8 h, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 20 |
- | - | - | - | - | 3.3 V-3.7 V | 341−299 |
| 800 |
690 (70) |
- | 6 | 10 | - | - | - | ||
| KHN70MVTJUB-VD (ЭИ598-VD) |
20 |
- | - | - | - | - | 3.3 V-3.7 V | 341−299 | |
| 800 |
690 (70) |
- | 10 | 14 | - | - | - | ||
| KHN70MVTJUB-VI (ЭИ598-VI) | 20 |
- | - | - | - | - | 3.3 V-3.7 V | 341−299 | |
| 800 |
690 (70) |
- | 10 | 14 | - | - | - | ||
| KHN56VMKJU-VD (ЭП109-VD) |
Quenching (1220±10) °C, exposure for 4−6 h, cooling in air; aging at (950±25) °C, exposure time 8 h, air cooling | 20 |
- | - | - | - | - | 3,2−3,5 | 363−302 |
| 900 |
640 (65) |
- | 4 | 8 | - | - | - | ||
| KHN55VMTKJU-VD (ЭИ929-VD) |
Quenching (1220±10) °C, exposure 2 h, air cooling; heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (850±10) °C, exposure time 8 h, air cooling | 20 |
- | - | - | - | - | 3.3 and 3.6 | 341−285 |
| 900 |
570 (58) |
- | 8 | 12 | - | - | - | ||
| HN51VMTJUKFR-VD (ЭП220-VD) | Quenching (1220±10) °C, exposure 4 hours, air cooling; heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (950±10) °C, exposure 2 h, air cooling | 20 |
- | - | - | - | - | 3.3 and 3.6 | 341−285 |
| 950 |
490 (50) |
- | 6 | 9 | - | - | - | ||
| HN60MJUVT-VD (ЭП539-VD) | Annealing at (1210±10) °C, exposure 2 h, air cooling; heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 20 |
- | - | - | - | - | 3,2−3,6 | 363−285 |
| 850 |
640 (65) |
- | 7 | 10 | - | - | - | ||
| ХН58МКЮР-VD (ЭП238-VD) | Quenching (1220±10) °C, exposure 4 hours, air cooling, aging at (950±25) °C, exposure time 8 h, air cooling | 20 |
- | - | - | - | - | 3,25−3,5 | 352−302 |
| 950 |
490 (50) |
- | 4 | 8 | - | - | - | ||
, j/cm
Notes:
1. The norms of toughness are given for bars with diameter 16 mm and more.
2. Allowed a full heat treatment (quenching+aging) no more than two times. When re-testing is allowed re-aging or increasing ageing time (during heat treatment of the new control samples) no more than two times.
3. For grades KHN77TJURU (ЭИ437БУ) and KHN77TJURU-VD (ЭИ437БУ-VD) recommended aging temperature is selected depending on the total mass fraction of titanium and aluminum:
to 3.6% temperature of ageing (750±10) °C; 3,6−3,8% — temperature aging (775±10) °C,
more than 3.8% — temperature aging (790±10) °C.
4. Allowed for bars with diameter less than 20 mm from alloys of marks HN77TYUR (EI437BU) and HN77TYUR-VD in tensile strength of not less than 686 MPa (70 kgf/mm).
5. Temperature aging of the alloy grade KHN77TJURU (ЭИ437БУ) (open method melting and vacuum-arc remelting) and the temperature quenching and aging the alloy grade KHN67MVTJU-VD (ЭП202-VD) is selected depending on the purpose of the alloy in the specified interval and maintained with an accuracy of ±10 °C.
6. A variant of the heat treatment of the alloy grade ХН65ВМТЮ (ЭИ893) indicate in the order. In the absence of instructions the option of heat treatment chosen by the manufacturer. When obtaining low values of mechanical properties when tested under the second option presbyteria hold I option.
7. For the alloy HN60MJUVT-VD (ЭП539-VD) is allowed to conduct additional aging at a temperature of 900 °C for 2−4 h.
2.8. Long-term strength of bars defined in the control samples of thermally treated workpieces must conform to the standards specified in table.3.
Table 3
| Grade | Testing option | Test temperature, °C | Long-term strength | |
Stress, N/mm |
The time to failure, hours, not less | |||
| HN77TYUR (EI437BU) |
I |
700 | 451 (46) | 40 |
| II |
700 | 431 (44) | 50 | |
| HN77TYUR-VD (EI437BU-VD) | I |
700 | 451 (46) | 40 |
| KHN77TJURU (ЭИ437БУ) |
I |
750 | 343 (35) | 50 |
| II |
750 | 294 (30) | 100 | |
| KHN77TJURU-VD (ЭИ437БУ-VD) |
I |
750 | 343 (35) | 50 |
| II | 650 | 608 (62) | 50 | |
| KHN77TJURU-PD (ЭИ437БУ-PD) | ||||
| KHN77TJU (ЭИ437А) |
I |
700 | 392 (40) | 50 |
| II |
700 | 353 (36) | 100 | |
| KHN70VMTJU (ЭИ617) |
- | 850 | 196 (20) | 40 |
| KHN70VMTJU-VI (ЭИ617-VI) |
- | 850 | 196 (20) | 60 |
| KHN70MVTJUB (ЭИ598) |
- | 800 | 275 (28) | 50 |
| KHN70MVTJUB-VD (ЭИ598-VD) |
- | 800 | 275 (28) | 55 |
| KHN70MVTJUB-VI (ЭИ598-VI) |
- | 800 | 275 (28) | 55 |
| KHN70VMTJUF (ЭИ826) |
- | 850 | 265 (27) | 50 |
| KHN70VMTJUF-VD (ЭИ826-VD) |
- | 850 | 265 (27) | 50 |
| KHN55VMTKJU-VD (ЭИ929-VD) |
- | 900 | 245 (25) | 40 |
| KHN75VMJU (ЭИ827) |
- | 850 | 265 (27) | 50 |
| KHN62MVKJU (ЭИ867) |
- | 900 | 216 (22) | 50 |
| KHN62MVKJU-VD (ЭИ867-VD) |
- | 900 | 216 (22) | 50 |
| KHN56VMKJU-VD (ЭП109-VD) |
- | 900 | 265 (27) | 50 |
| ХН15ВМТЮКФР-VD (ЭП220-VD) |
I |
940 | 216 (22) | 40 |
| II |
900 | 275 (28) | 50 | |
| HN58VMKJUR-VD (ЭП238-VD) |
- |
940 |
216 (22) | 50 |
| HN60MJUVT-VD (ЭП539-VD) |
- | 900 | 196 (20) | 50 |
Notes:
1. The variant test set at the customer’s request. In the absence of the requirements of the option chosen by the manufacturer.
2. Re-tests for differences in the assessment carried out for the I variant, and for the alloy ЭИ437А — II option.
3. The second option tests for alloy EI437BU applies to rods with a diameter of less than 20 mm.
4. Standards of long-term strength for alloys EI437BU and ЭИ437А under the second variant tests
Short-term creep of alloy KHN67MVTJU-VD (ЭП202-VD) shall correspond to the table.4.
Table 4
| Short-term creep | |||
| Test temperature, °C | Stress, N/mm |
Time of load application, min. |
|
| 700 |
510 (52) | 15 | 1,0 |
2.4−2.8. (Changed edition, Rev. N 1).
2.9. Bars with a diameter or a side of a square of 80 mm or more by ultrasound echo technique (UT) is not allowed for internal defects, the signal amplitude of which equals or exceeds the amplitude of the signal from reflector a control sample with a diameter of 3 mm, located in the same or a greater depth with a tolerance of minus 10%.
2.10. At the request of the consumer alloys manufactures:
a) control of mechanical properties at temperatures not covered by the standard;
b) with a normalized content of gases in alloys;
C) definition of creep;
g) validation of long-term strength of alloys not listed in table.3;
d) (Deleted, Rev. N 1).
Note. Standards, and transfers to b, in and test methods — is determined by agreement between manufacturer and consumer.
2.11. Recommendations for use of the alloys is given in Appendix 1.
2.12. Mechanical properties at room and elevated temperatures long-term strength and endurance, and other information about the physical properties of the alloys are given in annexes 2−5.
2.13. Control alloys ХН65ВМТЮ (ЭИ893), ХН65ВМТЮ-VD (ЭИ893-VD) and ХН65ВМТЮ-VI (ЭИ893-VI) volosovichi conducts consumer.
(Added, Rev. N 1).
3. ACCEPTANCE RULES
3.1. The rods take lots. The party must consist of one smelting metal, one size.
Vacuum arc melting complement of ingots, melted in the mold section, identical in electric mode and one of the electrodes of the source of melting.
3.2. Acceptance rules GOST 7566.
For alloys KHN77TJURU (ЭИ437-BU) and KHN77TJURU (ЭИ437БУ-VD) when unsatisfactory results of repeated testing at least one sample allowed the manufacturer chipping off new billet with heat treatment according to the regime established by this standard, determination of mechanical properties and long-term strength at the same number of samples as the first test. Results are unsatisfactory, the batch is rejected.
(Changed edition, Rev. N 1).
3.3. Dimensions and surface quality test on each rod of the party. Ultrasonic inspection is carried out for all rods with cross-section up to 80 mm.
3.4. To check the chemical composition of the sample size — according to GOST 7565.
For tensile tests at normal and elevated temperatures, impact strength, creep strength, hardness selected two bars from the party;
to control the macrostructure without heat treatment — in two bar from the party;
control of macrostructure and fracture in heat treated condition — two rods from the party for each type of test.
4. TEST METHODS
4.1. Surface quality check without using the magnifying devices after svetlenija or etching the surface.
4.2. The sizes of the finished products test measuring tools that provide required accuracy of measurement.
4.3. Sampling for the determination of chemical composition produced according to GOST 7565. Chemical analysis carried out according to GOST 20560*, GOST 12344−12364 GOST, GOST 28473 or other methods of equal accuracy requirements of these standards.
________________
* On the territory of the Russian Federation the document is not valid. Standards 28473−90. — Note the manufacturer’s database.
Control of lead and iron is carried out according to the method of the manufacturer, agreed in the prescribed manner.
4.4. Mechanical properties, hardness, creep strength is controlled in two samples for each test selected along the fiber from bars with diameter or side of square to 100 mm, and for bars with sizes over 100 mm from samples reforged with a side of a square of 80−100 mm.
Samples for testing the mechanical properties, hardness, long durability forged bars with diameter or side of square 60−200 mm alloy brands KHN77TJURU (ЭИ437БУ) and KHN77TJURU-VD (ЭИ437БУ-VD) intended for hot forming, are cut from samples reforged with a side of a square 80−100 mm, made with extra draught along the fiber.
The workpiece for testing of mechanical properties and long-term strength is subjected to heat treatment from bars with cross section up to 32 mm in the total cross section, more than 32 to 100 mm after cutting into four parts in section. Thermal processing of blanks of alloys KHN77TJURU (ЭИ437БУ) and KHN77TJURU-VD (ЭИ437БУ-VD) is carried out in the square of 80−100 mm.
Other requirements for making samples according to GOST 7564.
4.3; 4.4. (Changed edition, Rev. N 1).
4.5. Brinell hardness number is determined according to GOST 9012.
4.6. Tensile test at room temperature is carried out according to GOST 1497, at elevated temperatures, according to GOST 9651−84 on the samples five times the length of a diameter of 5 or 10 mm.
4.7. Test long-term strength is carried out according to GOST 10145 on samples 5 mm in diameter. the Manufacturer continues to test one of the samples to destruction from every fifth bottoms supplied in rods with a diameter of 20−55 mm.
Tests short-term creep carried out according to the method of manufacturer, agreed in the prescribed manner.
4.8. Test for impact strength is carried out according to GOST 9454 on samples of type 1.
4.9. Ultrasonic testing is carried out according to GOST 21120 or according to the method of the manufacturer, agreed in the prescribed manner.
4.10. Control of macrostructure is carried out 22838 GOST and GOST 10243.
When checking the fracture and macrostructure on heat-treated samples taken for monitoring fracture — two samples in the transverse direction of the fibers, to control the macrostructure — two samples in the longitudinal direction of the fiber.
(Changed edition, Rev. N 1).
4.11. Determining the content of gases is carried out according to GOST 17745, or by other methods of equal accuracy.
4.12. Determination of antimony, tin, bismuth, arsenic conducted by the method of the manufacturer, agreed in the prescribed manner.
4.13. Metal smelting of one, passed the test for macrostructure, mechanical properties, long-term strength in large sections when supplied in smaller sections, but not less than 20 mm, the above tests may be put.
4.14. When using the manufacturer’s statistical methods of testing hardness, mechanical properties and long-term strength in accordance with normative-technical documentation approved in the established order, control hardness, mechanical properties and long durability, provided for in this standard, the manufacturer is allowed not to perform.
The manufacturer guarantees the compliance of products to requirements of this standard. The differences in the periodic inspections of quality of products used control methods stipulated by this standard.
(Changed edition, Rev. N 1).
5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE
5.1. Marking, packaging, transportation and storage GOST 7566.
5.2. Forged rods brand KHN77TJURU-VD is additionally marked by the number of ingot vacuum-arc remelting.
5.3. When sending two or more parcels, the dimensions of which allow you to arrange transport package with dimensions according to GOST 24597, the package must be in transport packets.
The package of bars to the far North and equated localities — graveyard 15846*.
________________
* On the territory of the Russian Federation the document is not valid. Standards 15846−2002. — Note the manufacturer’s database.
Weight of cargo must not exceed when mechanized loading into open vehicles 10 t in closed — 1250 kg.
Sec. 5. (Changed edition, Rev. N 1).
ANNEX 1 (reference). RECOMMENDATIONS FOR USE OF ALLOYS
ANNEX 1
Reference
| Grade |
Approximate appointment | Maximum recommended application temperature, °C | Time work |
The temperature of beginning of intensive scaling, °C | |
| at GOST 5632−72 |
at GOST 5632−61 |
||||
| HN77TYUR HN77TYUR-VD |
EI437BU EI437BU-VD |
Disks, turbine blades |
750 | Limited | 1050 |
| KHN77TJURU KHN77TJURU-VD |
ЭИ437БУ ЭИ437БУ-VD |
Disks, turbine blades | 750 | Limited | 1050 |
| KHN67MVTJU-VD | ЭП202-VD | Blades, cases, disks, sheet metal, turbine parts, weldments |
800 | Long | 1000 |
| ХН65ВМТЮ ХН65ВМТЮ-VD |
ЭИ893 ЭИ893-VD |
Workers and guide vanes, fasteners, and gas turbine |
800 | Very long | 1000 |
| KHN62MVKJU-VD | ЭИ867-VD | Blades, turbine disks |
900 | Limited | 1080 |
| KHN56VMKJU-VD | ЭП109-AD | Turbine blades | 950 |
Limited | 1080 |
| KHN55VMTKJU-VD |
ЭИ929-VD | Turbine blades | 950 |
Limited | 1050 |
| KHN70VMTJUF-VD |
ЭИ826-VD | Turbine blades | 800 |
Long | 1050 |
ANNEX 2 (informative). MECHANICAL PROPERTIES OF HIGH-TEMPERATURE NICKEL-BASED ALLOYS AT ROOM AND ELEVATED TEMPERATURES
ANNEX 2
Reference
| Grade | Mechanical properties | |||||||
| at GOST 5632−72 |
at GOST 5632−61 |
The recommended mode of heat treatment of billets for the manufacture of samples |
Tempe temperature test- Tania, °C |
Times |
Yield strength |
The fre- |
The fre- |
Impact strength |
| HN77TYUR, HN77TYUR-VD | EI437BU EI437BU-VD | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (700±10) °C, exposure time 16 h, air cooling | 20 | 930−1080 (95−110) |
610−690 (62−70) |
15−30 | 15−30 | 39,2−98 (4−10) |
| 700 |
735−880 (75−90) |
540−610 (55−62) |
15−30 | 20−30 | The 58.8−117,7 (6−12) | |||
| 750 |
640−735 (65−75) |
- | 10−20 | 15−30 | 63,7 (6,5) | |||
| KHN77TJURU | ЭИ437БУ | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (770±20) °C, exposure time 16 h, air cooling | 20 | 980−1130 (100−115) |
640−735 (65−75) |
12−30 | 14−30 | 29,4−68,6 (3−7) |
| 700 |
804−820 (82−84) |
530−570 (54−58) |
16 | 21 | - | |||
| 750 |
650−670 (66−68) |
510 (52) | 14 | 29 | - | |||
| KHN77TJURU | ЭИ437БУ-VD | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (770±20) °C, exposure time 16 h, air cooling | 20 | 980−1220 (100−125) |
670−780 (68−80) |
13−30 | 16−36 | 29,4−68,6 (3−7) |
| 700 |
780−830 (80−85) |
540 (55) | 20 | 21−28 | - | |||
| 750 |
670−735 (68−74) |
530 (54,5) | 17 | 23−30 | - | |||
| KHN67MVTJU-VD | ЭП202-VD | Quenched from 1100−1150 °C, maintained for 5 h, cooled in air; aging at 800−850 °C, exposure for 10 h, air cooling | 20 | 930−1160 (95−117) |
550−706 (56−72) |
16−35 | 18−35 | Of 39.2−78.4 per (4−8) |
| 700 |
830−980 (85−100) |
490−640 (50−65) |
16−30 | 16−32 | 49,0−88,2 (5−9) | |||
| 800 |
690−780 (70−80) |
490−590 (50−60) |
12−25 | 16−30 | 49,0−88,2 (5−9) | |||
| KHN65MVTJU | ЭИ893 | 1. Annealing at (1170±10) °C, exposure 2 h, air cooling, aging at (770±20) °C, exposure 12 h, air cooling | 20 | 880−1100 (90−112) |
490−735 (50−75) |
20−44 | 25−40 | The 58.8−127,5 (6−13) |
| 750 |
690−840 (70−86) |
470−590 (48−60) |
15−25 | 15−30 | 78,4−156,9 (8−16) | |||
| 800 |
590−820 (60−84) |
440−590 (45−60) |
16−30 | 17−40 | 78,4−156,9 (8−16) | |||
| 2. Quenching with (1170±10) °C, exposure 2 h, air cooling, speed ageing (1000±10) °C, exposure 4 hours, cooling with the oven up to (900±10) °C, exposure for 8 h, cooling with the furnace to (850±10) °C, exposure 15 h, air cooling | 20 | 880−940 (90−96) |
490−540 (50−55) |
20−40 | 25−31 | 58,8−73,5 (6−7,5) | ||
| 750 |
690−740 (70−76) |
390−450 (40−46) |
15−31 | 15−32 | - | |||
| 800 |
570−620 (58−63) |
350−450 (36−46) |
18−33 | 23−37 | - | |||
| KHN70VMTJUF-VD | ЭИ826-VD | Annealing (1210±10) °C, exposure 2 h, air cooling, heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 20 | 1030 (105) |
705 (72) | 10 | 12 | 19,6 (2,0) |
| 800 |
780 (80) |
570 (58) | 8 | 11 | 34,3 (3,5) | |||
| 850 |
670 (68) |
510 (52) | 12 | 15 | - | |||
| KHN62MVKJU-VD | ЭИ867-VD | The quenching (1220±10) °C, exposure for 4−6 hours, air cooling, aging at (950±15) °With, exposure time 8 h, air cooling | 20 | 980−1220 (100−125) |
760−860 (78−88) |
8−24 | 11−28 | 14.7 to 49.0 points (1,5−5) |
| 900 |
570−735 (58−75) |
390−490 (40−50) |
8−20 | 12−28 | 49,0−68,6 (5−7) | |||
| 950 | 390−490 (40−50) |
290−340 (30−45) |
10−20 | 18−25 | The 58.8−78.4 per (6−8) | |||
| KHN56VMKJU-VD | ЭП109-VD | The quenching (1220±10) °C, exposure for 4−6 hours, air cooling, aging at (950±15) °With, exposure time 8 h, air cooling | 20 | 1080−1280 (110−130) |
- | 9−15 | 11−16 | 19,6−49,0 (2−5) |
| 900 |
640−780 (65−80) |
- | 4−16 | 8−20 | Of 39.2−58.8 per (4−6) | |||
| 950 | 540−590 (55−60) |
- | 3−8 | 5−12 | Of 39.2−58.8 per (4−6) | |||
| KHN55VMTKJU-VD | ЭИ929-VD | The quenching (1220±10) °C, exposure 2 h, air cooling; heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (850±10) °C, exposure time 8 h, air cooling | 20 | 980−1180 (100−120) |
730−780 (75−80) |
8−12 | 9−15 | - |
| 900 |
570−770 (58−76) |
390−490 (40−50) |
8−28 | 12−38 | - | |||
| 950 |
340−440 (35−45) |
- | 17−25 | 20−30 | - | |||
APPENDIX 2. (Changed edition, Rev. N 1).
APPENDIX 3 (reference). THE VALUE OF LONG-TERM STRENGTH AND TOUGHNESS OF HIGH-TEMPERATURE NICKEL-BASED ALLOYS
APPENDIX 3
Reference
| Grade | The recommended mode of heat treatment of billets for the manufacture of samples | Tempe temperature test- Tania, °C |
The long-term strength, N/mm |
Limit takeaways- | |||
| at GOST 5632−72 |
at GOST 5632−61 |
100 | 1000 | 10000 | |||
| HN77TYUR HN77TYUR-VD |
EI437BU EI437BU-VD |
Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (700±10) °C, exposure time 16 h, air cooling | 700 | 400−440 (41−45) |
290−310 (30−32) |
170−190 (18−20) |
360−380 (37−39) |
| 750 | 290 (30) | 190−200 (20−21) |
110−117 (11−12) |
- | |||
| KHN77TJURU | ЭИ437БУ | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (770±20) °C, exposure time 16 h, air cooling | 700 | 430 (44) | 290−310 (30−32) |
- | 380 (39) |
| 750 | 310 (32) |
- | - | - | |||
| KHN77TJURU-VD | ЭИ437БУ-VD | Annealing at (1080±10) °C, exposure time 8 h, air cooling, aging at (770±20) °C, exposure time 16 h, air cooling |
750 | 330−340 (34−35) |
220 (23) | - | - |
| KHN67MVTJU-VD | ЭП202-VD | Annealing at 1100−1150 °C, maintained for 5 h, cooled in air; aging at 800−850 °C, exposure for 10 h, air cooling | 700 | 510 (52) |
380 (39) | 310 (32) | 290−315 (30−32) |
| 750 |
390 (40) |
290 (30) | 210 (22) | 315−330 (32−34) | |||
| 800 |
290 (30) | 190 (20) | 140 (15) |
300−320 (31−33) | |||
| ХН65ВМТЮ ХН65ВМТЮ-VD |
ЭИ893 ЭИ893-VD |
1. Annealing at (1170±10) °C, exposure 2 h, air cooling, aging at (770±20) °C, exposure 12 h, air cooling | 700 | - | 390 (40) | 290 (30) | 370−390 (38−40) |
| 750 | - | 290−320 (30−33) |
200−220 (21−23) |
350−400 (36−41) | |||
| 800 | - | 170−210 (18−22) |
120−130 (13−14) |
350−380 (36−39) | |||
| 2. Annealing at (1170±10) °C, exposure 3 h, air cooling; step aging (1000±10) °C, exposure 4 hours, cooling with the oven up to (900±10) °C, exposure for 8 h, cooling with the furnace to (850±10) °C, exposure 15 h, air cooling | 700 | - | 390 (40) | 290 (30) | 370−390 (38−40) | ||
| 750 | - | 290−320 (30−33) |
200−220 (21−23) |
350−400 (36−41) | |||
| 800 | - | 170−210 (18−22) |
120−130 (13−14) |
350−380 (36−39) | |||
| KHN70VMTJUF-VD | ЭИ826-VD | Annealing at (1210±10) °C, exposure 2 h, air cooling, heating to (1050±10) °C, exposure 4 hours, air cooling, aging at (800±10) °C, exposure time 16 h, air cooling | 800 | 340 (35) | 220 (23) | 160 (16,5) | 320−340 (33−35) |
| 850 | 230 (24) | 140 (14.5 mm) |
95 (9.5 in) | - | |||
| KHN62MVKJU-VD | ЭИ867-VD | Quenching (1220±10) °C, exposure for 4−6 hours, air cooling, aging at (950±15) °With, exposure time 8 h, air cooling | 900 | 190−200 (19−21) |
110 (11) | 130−160 (13−16) |
310−350 (32−36) |
| 950 | 110−120 (11−12) |
59 (6) | - | - | |||
| KHN56VMKJU-VD | ЭП109-VD | Quenching (1220±10) °C, exposure for 4−6 hours, air cooling, aging at (950±25) °C, exposure time 8 h, air cooling | 900 | 235−260 (24−27) |
147 (15) | 83 (8,5) | 370 (38) |
| 950 | 147−156 (15−16) |
78 (8) | - | - | |||
| KHN55VMTKJU-VD | ЭИ929-VD | Quenching (1220±10) °C, exposure 2 h, air cooling; heating (1050±10) °C, exposure 4 hours, air cooling, aging at (850±10) °C, exposure time 8 h, air cooling | 900 | 200−220 (21−23) |
127 (13) | 68 (7) | 290−340 (30−35) |
| 950 | 117−156 (12−16) |
59 (6) | - | - | |||
ANNEX 4 (reference). TEMPERATURE COEFFICIENT OF EXPANSION
ANNEX 4
Reference
THERMAL EXPANSION COEFFICIENT 
| Grade | |||||||
| Tempe temperature, °C |
HN77TYUR (EI437BU) HN77TYUR-VD (EI437BU-VD) KHN77TJURU (ЭИ437БУ) KHN77TJURU-VD (ЭИ437БУ-VD) |
KHN67MVTJU-VD (ЭП202-VD) |
ХН65ВМТЮ (ЭИ893) ХН65ВМТЮ-VD (ЭИ893-VD) |
KHN70VMTJUF-VD (ЭИ826-VD) |
KHN62MVKJU-VD (ЭИ867-VD) |
KHN56VMKJU-VD (ЭП109-VD) | KHN55VMTKJU-VD (ЭИ929-VD) |
| 20−100 |
12,6 | 12,0 | 11,5 | 10,4 | 11,5 | 11,8 | 10,8 |
| 20−200 |
12,9 | 12,3 | - | 11,7 | 12,6 | 12,2 | 11,7 |
| 20−300 |
13,3 | 13,5 | 12,3 | 12,4 | 13,0 | 12,7 | 12,4 |
| 20−400 |
13,8 | 13,6 | 12,7 | 12,9 | 13,4 | 13,1 | 12,8 |
| 20−500 |
14,2 | 13,6 | 13,0 | 13,2 | 13,7 | 13,4 | 13,4 |
| 20−600 |
14,6 | 14.4 V | 13,2 | 13,6 | 14,0 | 13,6 | 13,8 |
| 20−700 |
15,1 | 14,8 | 14,0 | 14,0 | 14,3 | 14,1 | 14,1 |
| 20−800 |
15,5 | 15,2 | 14,3 | 14,5 | 14,7 | 14,8 | 14,5 |
| 20−900 |
16,2 | 16,2 | 15,0 | 15,0 | 15,6 | 15,7 | 15,5 |
| 20 to 1000 |
16,8 | - | - | - | 16,9 | 17,0 | - |
ANNEX 5 (reference). The thermal CONDUCTIVITY
ANNEX 5
Reference
Thermal CONDUCTIVITY , cal/(cm·°C)
| Grade | |||||||
| Tempe temperature, °C |
HN77TYUR (EI437BU) HN77TYUR-VD (EI437BU-VD) KHN77TJURU (ЭИ437БУ) KHN77TJURU-VD (ЭИ437БУ-VD) |
ХН67ВМТЮ-VD (ЭП202-VD) |
ХН65ВМТЮ (ЭИ893) ХН65ВМТЮ-VD (ЭИ893-VD) |
KHN70VMTJUF-VD (ЭИ826-VD) |
KHN62MVKJU-VD (ЭИ867-VD) |
KHN56VMKJU-VD (ЭП109-VD) | KHN55VMTKJU-VD (ЭИ929-VD) |
| 20 |
0,030 | 0,021 | 0,030 | 0,021 | 0,021 | 0,019 | 0,021 |
| 100 |
0,033 | 0,023 | - | 0,025 | 0,025 | 0,021 | 0,025 |
| 200 |
0,037 | 0,027 | 0,031 | 0,030 | 0,031 | 0,025 | 0,029 |
| 300 |
0,041 | 0,032 | 0,033 | 0,034 | 0,036 | 0,028 | 0,034 |
| 400 |
0,045 | 0,037 | 0,037 | 0,039 | 0,041 | 0,033 | 0,039 |
| 500 |
0,050 | 0,041 | 0,041 | 0,044 | 0,045 | 0,038 | 0,044 |
| 600 |
0,056 | 0,045 | 0,048 | 0,049 | 0,048 | 0,044 | 0,049 |
| 700 |
0,060 | 0,050 | 0,056 | 0,054 | 0,052 | 0,050 | 0,054 |
| 800 |
0,067 | 0,054 | 0,065 | 0,060 | 0,055 | 0,056 | 0,058 |
| 900 |
0,074 | 0,058 | - | 0,067 | 0,059 | 0,062 | 0,064 |
