TU 14-131-987-2002
I affirm: Chief Engineer JSC Metallurgical Electrostal plant V.N. Popov |
RODS WITH SPECIAL SURFACE FINISHING
MADE OF 42ХНМ ALLOY
TECHNICAL SPECIFICATIONS
TU 14-131-987-2002
(replaces TU 14-131-911-97)
The holder of the original is OAO Metallurgical
Electrostal plant
Validity period: from 04.09.2002
until 04.09.2007
AGREED: Technical Director JSC "Mashinostroitelny factory" I.V. Petrov |
DEVELOPED BY: Head of Technical department of JSC "Metallurgical Electrostal plant I.M. Vorobyova |
TU 14-131-987-2002
These technical conditions apply to rods with a special surface finish made of precision alloy grade 42KhNM, smelted in open induction furnaces and grade 42KhNM-Sh, smelted in open induction furnaces with subsequent electroslag remelting.
Example of a symbol:
Rods with special surface finishing, diameter 10 mm, quality h11 according to GOST 14955-77, surface quality group B according to GOST 14955-77, heat-treated from alloy 42ХНМ:
Circle 
1. ASSORTMENT
1.1. Rods are supplied with a diameter of 8÷10 mm.
1.2. In terms of shape, dimensions and maximum deviations, the rods must comply with GOST 14955, quality h11.
1.3. The length of the rods is not shorter than 500 mm.
2. TECHNICAL REQUIREMENTS
2.1. The chemical composition of the alloy must comply with the requirements of Table 1.
2.2. The rods are supplied in a heat-treated condition.
2.3. Mechanical properties determined in the as-delivered condition at room temperature on longitudinal samples cut from rods are given in Table 2.
Table 2
| Mechanical properties, not less than | ||
Ultimate strength, σ in N/ mm2 (kgf/ mm2 ) |
Yield strength, σ 0.2 N/ mm2 (kgf/ mm2 ) |
Relative elongation, δ 5 % |
| 740 (75) | 440 (45) | 30 |
Note: The standards are optional. The test results are recorded in the document
quality.
TU 14-131-987-2002
Table 1
| Mass fraction of elements, % | ||||||||||
| Carbon | Silicon | Manganese | Sulfur | Phosphorus | Chromium | Nickel | Molybdenum | Tungsten | Iron | Aluminum |
| no more | 41.0 43.0 |
warp | 1.0 1.5 |
0.05 0.30 |
no more | |||||
| 0.03 | 0.25 | 0.2 | 0.01 | 0.01 | 0.6 | 0.4 | ||||
NOTES: 1. Permissible deviation in the mass fraction of chromium is ± 0.05%.
2. Cerium is added to the alloy in the range of 0.02-0.2% and magnesium in the range of
0.01-0.03% and is not determined by chemical analysis.
3. The alloy is allowed to contain a residual mass fraction of titanium of no more than 0.25%.
4. The mass fraction of nitrogen and cobalt in the alloy is controlled. Results
control are entered into the quality document.
TU 14-131-987-2002
2.4. The contamination of the alloy with non-metallic inclusions when assessed according to the maximum score should not exceed:
Oxides (OK, OT) - 1 point
Silicates (CX, SP) - 1 point
Sulfides (C) - 1 point
Nitrides (NS, NT) - 3 points
The standards are optional. The test results are recorded in the quality document.
2.5. Grain size as delivered 7-11 points.
The standards are optional. The test results are recorded in the quality document.
2.6. The surface quality of the rods must correspond to group "B" according to GOST 14955.
3. ACCEPTANCE RULES AND TEST METHODS
3.1. General acceptance rules - in accordance with GOST 7566.
3.2. Rods are accepted in batches. A batch must consist of rods of the same heat and the same size.
3.3. Each rod is subject to geometric dimension control.
The diameter of the rods is measured with a micrometer according to GOST 6507, a clamp according to GOST 2216, a caliper according to GOST 166, the length with a metal ruler according to GOST 427 or other measuring instruments of the required accuracy.
3.4. Sampling for chemical analysis is carried out in accordance with GOST 7565.
Chemical analysis is carried out according to GOST 12344 - GOST 12350, GOST 12352-GOST 12354, GOST 12356, GOST 12357, GOST 12359, GOST 28473, GOST 29095 or other methods that ensure the accuracy of determination.
3.5. Mechanical properties are tested on 2 samples in accordance with GOST 1497.
3.6. Control of contamination with non-metallic inclusions is carried out on 6 samples according to GOST 1778, method Ш4.
TU 14-131-987-2002
3.7. Grain size control is carried out on 2 samples in accordance with GOST 5639.
3.8. Electroslag melting includes ingots smelted from one initial melt.
When remelting three consumable electrodes, it is permitted to assemble consumable electrodes from three original melts.
4. PACKAGING, MARKING, TRANSPORTATION AND STORAGE
4.1. Packaging, labeling, transportation and storage in accordance with GOST 14955.
NOTE: Prices for products are negotiable.
Technical conditions are registered: Head of the Standardization Bureau OJSC "Metallurgical Plant "Elektrostal" N.V. Finagina |
TU 14-131-987-2002
Appendix No. 1
LIST OF ND,
which are referenced in the text of the technical specifications
| Designation ND | The number of the item that contains the link |
GOST 166-89 GOST 427-75 GOST 1497-84 GOST 1778-70 GOST 2216-84 GOST 5639-82 GOST 6507-90 GOST 7565-81 GOST 7566-94 GOST 12344-88 GOST 12345-88 GOST 12346-78 GOST 12347-77 GOST 12348-78 GOST 12349-83 GOST 12350-78 GOST 12352-81 GOST 12353-78 GOST 12354-81 GOST 12356-81 GOST 12357-84 GOST 12359-99 GOST 14955-77 GOST 28473-90 GOST 29095-91 |
3.3 3.3 3.5 3.6 3.3 3.7 3.3 3.4 3.1 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 1.2; 4.1; 2.6 3.4 3.4 |
FROM: FAX NO. : 5770984 DEC. 23 2009 14:36 PAGE 1
I APPROVE Technical Director OJSC "Metallurgical Plant "Elektrostal" I.V. Kabanov |
RODS WITH SPECIAL FINISHING
SURFACES MADE OF 42ХНМ ALLOY
TECHNICAL SPECIFICATIONS
TU 14-131-987-2002
Change #4
The holder of the original is JSC Metallurgical Plant
"Elektrostal"
Introduction period:
AGREED Technical Director JSC "Mashinostroitelny factory" I.V. Petrov |
DEVELOPED BY Head of Technical Department JSC Metallurgical Plant "Elektrostal" I.M. Vorobyova |
FROM: FAX NO. : 5770984 DEC. 23 2009 14:37 PAGE 2
p.2
Change #4
to TU 14-131-987-2002
1. The preamble to the technical specifications shall be set out as follows:
These technical conditions apply to rods with a special surface finish made of precision alloy grade 42KhNM, smelted in open induction furnaces and grades 42KhNM-Sh, 42KhNM-VD, smelted in open induction furnaces with subsequent electroslag and vacuum-arc remelting.
REGISTERED: Head of the Standardization Bureau OJSC "Metallurgical Plant "Elektrostal" O.B. Shvyryaeva |
NOTICE No. 3
on the extension of TU 14-131-987-2002 "Rods with special
surface finishing made of 42ХНМ alloy»
1. Extend the validity period of the TU without limitation.
| Acting Technical Director | Yu.N. Koshelev |
I APPROVE Chief Engineer JSC Metallurgical Electrostal plant V.N. Popov |
RODS WITH SPECIAL SURFACE FINISHING
MADE OF 42ХНМ ALLOY
TECHNICAL SPECIFICATIONS
TU 14-131-987-2002
Change #2
The holder of the original is OAO Metallurgical
Electrostal plant
Date of introduction: 26.05.2003
AGREED: Technical Director JSC "Mashinostroitelny factory" I.V. Petrov |
DEVELOPED BY: Head of Technical department of JSC "Metallurgical Electrostal plant I.M. Vorobyova |
Change #2
to TU 14-131-987-2002
1. Clause 1.1. of Section 1 "Assortment" shall be set out as follows:
1.1. Rods are supplied with a diameter of 5÷10 mm.
Registered: Head of the Standardization Bureau JSC Metallurgical Plant "Elektrostal" N.V. Finagina |
I APPROVE Chief Engineer JSC Metallurgical Plant "Elektrostal" V.N. Popov |
RODS WITH SPECIAL SURFACE FINISHING MADE OF
ALLOY 42ХНМ
TECHNICAL SPECIFICATIONS
TU 14-131-987-2002
(replaces TU 14-131-911-97)
Change #1
The holder of the original is JSC Metallurgical Plant
"Elektrostal"
Date of introduction: 18.10.2002
AGREED: Technical Director JSC "Mashinostroitelny factory" I.V. Petrov |
DEVELOPED BY: Head of Technical Department JSC Metallurgical Plant "Elektrostal" I.M. Vorobyova |
Change #1
to TU 14-131-987-2002
1. Clause 2.1. note 1 to table 1 shall be set out as follows:
"1. Permissible deviation in the mass fraction of chromium is ±0.5%."
Registered: Head of the Standardization Bureau JSC Metallurgical Plant "Elektrostal" N.V. Finagina |
I APPROVE Technical Director JSC Metallurgical Plant "Elektrostal" ___________ I.V. Kabanov "13" _____ 01 _____ 2017 |
RODS WITH SPECIAL SURFACE FINISHING MADE OF
ALLOY GRADE 42ХНМ
TECHNICAL SPECIFICATIONS
TU 14-131-987-2002
Change #5
The holder of the original is JSC "Metallurgical Plant "Elektrostal"
Date of introduction: 09.03.2017
AGREEDTechnical Director PJSC "Machine-building plant" No. 37-110/43 from A.V. Zhiganin «12» _____ 01 _____ 2017 Deputy General Director JSC VNIINM named after A.A. Bochvara" No. 26/300-2/1262 from M.V. Skupov «07» _____ 03 _____ 2017 |
DEVELOPED BY Head of Technical Department JSC Metallurgical Plant "Elektrostal" ___________ I.M. Vorobyova "13" _____ 01 _____ 2017 |
Page 2
Change #5 to
TU 14-131-987-2002
1 Section 2, item 2.1, table 1: add a column "Nitrogen" with a mass fraction of 0.05-0.15%.
2 Section 2, paragraph 2.1, table 1, note 1 shall be written in the new version:
"1 The maximum deviation for the mass fraction of chromium is plus or minus 0.5%, nitrogen is minus 0.02%."
3 Section 2, paragraph 2.1, Table 1, note 4: delete the words "nitrogen and".
4 Section 2, paragraph 2.2 shall be set out as follows:
"2.2 The rods are supplied in a heat-treated (hardened) condition. Hardening is permitted from the temperature of the end of rolling."
5 Section 2, paragraph 2.3, table 2, note shall be amended to read as follows:
"Note: Relative elongation standards are optional, are not a rejection feature and are included in the quality document."
6 In paragraph 2.4, exclude the phrase about the optionality of standards for non-metallic inclusions.
7 Section 2, paragraph 2.5 shall be set out as follows:
"2.5 The grain size as delivered must correspond to number 6-11."
8 Section 3, paragraph 3.6, method "Ш6" shall be replaced with method "Ш4".
9 Preliminary notification No. 131-TU/13 dated 10.02.2011 shall be cancelled.
REGISTERED Head of the Standardization Bureau of JSC Electrostal Metallurgical Plant ___________ O.B. Shvyryaeva "9" ___ March ___ 2017 |
