TU 14-1-3942-85

Organization P.O. Box G-4838

OKP 09 6488 AGREED: Head of the organization P.O. Box B-2250 E.V. Kulikov

UDC Group B32 I APPROVE: Chief engineer of the organization tions p/y P-6732 N.I. Drozdov 05.02.85

RODS FROM ALLOYS OF GRADES ХН78Т-ВИ (ЭИ435-ВИ),

KhN77TYUR-VI (EI437B-VI), KhN78T-ID (EI435-ID),

KHN77TYUR-ID (EI437B-ID)

Pilot batch

TECHNICAL SPECIFICATIONS

TU 14-1-3942-85

(for the first time)

Valid from 01.08.1985 to 01.11.20212.

Agreed: Chief Engineer enterprises P.O. Box B-2822 S.A. Kuznetsov First Deputy Director Enterprises P.O. Box R-6575 N.G. Reshetnikov Senior Chairman of the Customer 3457 A.S. Rabichev Head of the laboratory of special steels and alloys of the Central Research Institute of ChM V. T. Ababkov

Developed by: Chief Engineer Enterprises P.O. Box A-7845 K.Ya. Fedotkin Deputy Director of INMT Central Research Institute of Ferrous Metals V.G. Voskoboinikov AGREED: Director of the Institute of Quality steels of the Central Research Institute of ChM S.A. Golovanenko

1985

These technical conditions apply to hot-rolled rods made of alloys of the KhN78T (EI435) and KhN77TYuR (EI437B) grades, melted in vacuum-induction furnaces or in vacuum-induction furnaces with subsequent vacuum-arc remelting. The melting method is specified in the order.

Metal delivery is carried out in accordance with the conditions 01-1874-62 when specified in the order.

Experimental batch.

1. ASSORTMENT

1.1. Rods are supplied in sizes from 10 to 40 mm inclusive. In terms of shape, size and maximum deviations, hot-rolled rods must meet the requirements of GOST 22411 of the 3rd rolling accuracy group. The length of the rods must be a multiple of 350 mm. The tolerance for the overall multiple is +100 mm.

2. TECHNICAL REQUIREMENTS

2.1. The chemical composition of the alloys must meet the requirements of Table 1.

2.2. The rods are supplied without heat treatment.

2.3. Mechanical properties at room temperature and at 700°C and long-term strength are determined on longitudinal control samples made from heat-treated blanks according to the regime specified in Table 2.

The mechanical property standards for the EI435 alloy at room temperature, for the EI437B alloy at 700°C and the long-term strength for the EI437B-VI and EI437B-ID alloys are given

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Developer.					Rods made of alloys of the following grades: KhN78T-VI (EI435-VI), KhN77TYUR-VI (EI437B-VI), KhN78T-ID (EI435-ID), KhN77TYUR-ID (EI437B-ID). Pilot batch	Lit.			Sheet	Sheets
Prov.									2	9
N. counter.
Approved.

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Table 1

Alloy grades

Mass fraction of elements, %%

carbon

silicon

manganese

sulfur

phosphorus

chromium

nickel

aluminum

titanium

iron

boron

copper

cerium

lead

ХН78Т (ЭИ435

n.b. 0.12

n.b. 0.8

n.b. 0.7

n.b. 0.012

n.b. 0.015

19.0 22.0

osn.

n.b. 0.15

0.15 0.35

n.b. 1.5

ХН77ТЮР (ЭИ437Б)

n.b. 0.07

n.b. 0.60

n.b. 0.40

n.b. 0.007

n.b. 0.015

19.0 22.0

osn.

0.6 1.0

2.4 2.8

n.b. 1.0

0.003 0.01

n.b. 0.07

n.b. 0.02

n.b. 0.001

NOTE: 1. Boron, cerium and other refining elements are introduced into the metal by calculation and are not determined by chemical analysis.

2. In the alloy EI435, deviations from are allowed, provided that all requirements of these technical conditions are met.

chemical composition standards: carbon plus 0.01%, silicon plus 0.02%, manganese plus 0.02%, chromium plus, minus

0.1%, for aluminum plus 0.05%, for titanium plus, minus 0.02%. Mass fraction of residual elements in accordance with GOST

5632.

3. The alloy EI437B is allowed to contain antimony, tin, bismuth, arsenic up to 1 point on the spectral scale

analysis.

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in table 2.

2.4. The macrostructure of the rods must not contain voids, holes, cracks, delaminations or foreign inclusions visible without the use of magnifying devices.

2.5. There should be no cracks, folds, snags or films on the surface of the rods.

Local defects must be removed by gentle cutting or cleaning.

The depth of the defect recess should not exceed 8% of the diameter of the rods, calculated from the nominal value.

Individual small scratches, dents, and ripples within the one-sided minus maximum deviation for a given size, calculated from the actual size, are allowed without cleaning.

2.6. The assessment of metal contamination with non-metallic inclusions is carried out according to the scales of GOST 1778:

line oxides, point oxides,

brittle silicates, plastic silicates,

non-deformable silicates, sulfides,

nitrides and carbonitrides.

Control of non-metallic inclusions is carried out on 6 samples according to the methodology and scales of GOST 1778 using the "Ш" method, options "Ш4" and "Ш6".

The actual assessment results in points are entered into the quality document; the standards for contamination with non-metallic inclusions are established after the accumulation of data.

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and testing methods in accordance with GOST 5949.

3.2. Mechanical properties are controlled on 2

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Table 2

Alloy brand	Recommended mode of heat treatment of samples	Test temperature, °C	Mechanical properties not less than				Long lasting strength
			Temporary resistance σ in N/ mm2 (kgf/ mm2 )	Limit fluidity σ 0.2 N/ mm2 (kgf/ mm2 )	Relative		Constantly applied voltage N/ mm2 (kgf/ mm2 )	Test time per hour not less than
					elongation δ 5 %	narrowing Ψ %
ХН78Т (EI435	Hardening from temperature (980-1080) °C, holding for 2-3 hours, air cooling.	room	640 (65)	165 (17)	35	50	-	-
ХН77ТЮР (EI437B)	Heating for 8 hours at a temperature of (1080±10) °C, cooling in air and subsequent aging for 16 hours at a temperature of (700±7) °C, cooling in air.	700	610 (62)	-	5	12	430 (44)	50

Note: 1. The results of testing mechanical properties and long-term strength are optional for at least 25 melts of each

smelting method, after which the standards are clarified if necessary.

2. In fact, the results of monitoring the mechanical properties (σ _in , σ _0.2 , δ ₅ , Ψ) of the EI435 alloy at a temperature of 700°C are recorded in

quality document.

3. Heat treatment of samples is carried out in a circular, square cross-section of 20-25 mm, less than 20 in the supplied size.

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heat-treated samples for each type of test, from each melt, cut from the supplied profile, in accordance with GOST 1497 at room temperature and GOST 9651 at elevated temperatures.

3.3. The rods accepted by the Quality Control Department are presented to the customer's representative for acceptance testing by a delivery notice signed by the chief engineer of the manufacturer and the head of the Quality Control Department. The delivery notice is accompanied by a protocol of factory tests conducted by the Quality Control Department.

3.4. If, during acceptance tests, non-compliance of the rods with at least one point of the technical specifications is established, the rods are returned to the manufacturer.

3.5. In case of repeated presentation, together with the presentation document marked "Repeated", a report on the causes and elimination of the detected defects is presented. The report is approved by the chief engineer of the manufacturer. The scope and procedure of testing during repeated presentation is determined by the chief engineer and the customer's representative.

3.6. A batch of rods that has passed the tests with a positive result is considered finally accepted.

4. PACKAGING, MARKING AND TRANSPORTATION

4.1. Packaging, marking and transportation in accordance with GOST 7566.

4.2. Rods made from vacuum-induction melted metal are marked "VI". Rods made from vacuum-induction melted metal with subsequent vacuum-arc remelting are marked with the index "ID".

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Registered by the Central Research Institute of the Black Sea: 21.05.1985.

Head of the Standardization Department

ferrous metallurgy

V. T. Ababkov

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Appendix A

Reference

List of referenced documents

in the text of the technical specifications

Designation ND	The number of the item that contains the link
GOST 1497-84 GOST 1778-70 GOST 5949-75 GOST 7566-94 GOST 9651-84 GOST 22411-77	3.2 2.6 3.1 4.1 3.2 1.1

Sheet

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OKP 096488

Group B 32 I APPROVE Director of the Central Scientific and Methodological Center FSUE "TsNIIchermet named after I.P. Bardin", Chairman of TC 375 "Metal products from ferrous metals and alloys" G.N. Eremin "05" 12 2018

RODS FROM ALLOYS OF GRADES ХН78Т-ВІ (ЭИ435-ВІ), ХН77ТЮР-ВІ

(EI437-VI), KhN78T-ID (EI435-ID), KhN77TYUR-ID (EI437-ID).

EXPERIMENTAL BATCH

TECHNICAL SPECIFICATIONS

TU 14-1-3942-85

Amendment No. 10

Holder of the original: TsSSM FSUE "TsNIIchermet named after I.P. Bardin"

Date of introduction: 01.01.2019

AGREED Technical Director JSC Metallurgical Plant "Elektrostal" №2184-30/13 I.V. Kabanov "23" 11 2018

DEVELOPED BY Head of Standardization Department metal products of the Central Steel Works FSUE "TsNIIchermet named after I.P. Bardin" S.A. Gorshkov "21" 11 2018

On page 4.

Change #10

TU 14-1-3942-85

1 The validity period of the technical conditions shall be extended until 01.11.2021.

2 Title page. Exclude:

- code: "OKP 09 6488";

- words: "Group B 32".

In the upper right corner, indicate the code: "MKS 77.140.60".

3 Introductory part. Add the following sentence to the last paragraph: "Codes for alloy grades are given in Appendix B."

4 Appendix A "List of regulatory documents referenced in the text of the technical specifications" shall be replaced with the attached one.

5 Supplement the technical specifications with Appendix B "Codes for steel grades (alloys)".

6 Notifications No. 8, 9 shall be cancelled.

The examination was carried out by TC 375 "Metal products made of ferrous metals and alloys" "5" 12 2018 Responsible Secretary of TC 375, Head of Standardization Department metal products of the Central Steel Works FSUE "TsNIIchermet named after I.P. Bardin" S.A. Gorshkov

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TU 14-1-3942-85

Appendix A

(required)

List of regulatory documents,

which are referenced in the text of the technical specifications

Designation and name of the normative document		Number of section, subsection, clause, subclause, appendix in which the reference is located
GOST 1497-84	Metals. Tensile Test Methods	3.2
GOST 1778-70	Steel. Metallographic methods for determining non-metallic inclusions	2.6
GOST 5949-75 from 01.02.2019 GOST 5949-2018	Steel grade and calibrated, corrosion-resistant, heat-resistant and heat-resistant. Technical ski conditions Metal products made of stainless steels and iron-nickel alloys, corrosion-resistant, heat-resistant and heat-resistant. Technical conditions	3.1
GOST 7566-94 from 01.02.2019 GOST 7566-2018	Metal products. Acceptance, marking, packaging, transportation and storage Metal products. Acceptance rules, marking, packaging, transportation and storage	4.1
GOST 9651-84	Metals. Methods of tensile testing at elevated temperatures	3.2
GOST 22411-77	Hot rolled and forged alloy rods. Assortment	1.1

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TU 14-1-3942-85

Appendix B

(informative)

Codes for steel grades (alloys)

Steel grade (alloy)	Code for steel (alloy) grade
ХН78Т-ВИ (ЭИ435-ВИ), ХН78Т-ДІД (ЭИ435-ДІД) KHN77TYUR-VI (EI437-VI) KHN77TYUR-ID (EI437-ID)	8865 8863

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ISS 77.140.60 I APPROVE Deputy General Director for work with enterprises FSUE "TsNIIchermet named after I.P. Bardin", Chairman of TC 375 "Metal products from ferrous metals and alloys" G.N. Eremin "26" 07 2021

RODS FROM ALLOYS OF GRADES ХН78Т-ВІ (ЭИ435-ВІ), ХН77ТЮР-ВІ

(EI437B-VI), KhN78T-ID (EI435-ID), KhN77TYUR-ID (EI437B-ID)

EXPERIMENTAL BATCH

TECHNICAL SPECIFICATIONS

TU 14-1-3942-85

(for the first time)

Amendment No. 11

Holder of the original: TsSSM FSUE "TsNIIchermet named after I.P. Bardin"

Date of introduction: 01.11.2021

AGREED Deputy General Director - Director for Science of JSC Metallurgical Plant Elektrostal №1066-29/13 I.V. Kabanov "21" 07 2021

DEVELOPED BY Director of the Central Scientific and Methodological Center FSUE "TsNIIchermet named after I.P. Bardin" S.A. Gorshkov "20" 07 2021

On page 3.

Change #11

TU 14-1-3942-85

1 The validity period of the technical conditions shall be extended until 01.11.2024.

2 Throughout the text of the technical specifications, replace the abbreviation "table" with the word "table" in the appropriate case.

3 Item 2.1, Table 1. Replace the number of significant digits after the decimal point in the mass fraction of elements, %:

for alloy grade ХН78Т (ЭИ435):

- silicon "n.b. 0.8" to "not more than 0.80";

- manganese "n.b. 0.7" to "no more than 0.70";

- chromium "19.0-22.0" to "19.00-22.00";

- iron "n.b. 1.5" to "no more than 1.50";

for alloy grade ХН77ТЮР (ЭИ437Б):

- chromium "19.0-22.0" to "19.00-22.00";

- aluminum "0.6-1.0" to "0.60-1.00";

- titanium "2.4-2.8" to "2.40-2.80";

- iron "n.b. 1.0" to "no more than 1.00".

Replace the abbreviation "n.b." with the word "no more than" - 12 times.

Note 2. Replace the number of significant digits after the decimal point in the chromium deviation "minus 0.1%" with "minus 0.10%".

4 Point 2.3. Replace the words: "at room temperature" with the words: "at a temperature of ()°C".

Table 2 shall be supplemented with note 4 as amended:

"4. The "-" sign means that the characteristic is not standardized and not controlled."

5 Clause 2.4. Replace the words: "foreign inclusions" with "foreign metal and slag inclusions".

6 Appendix A "List of regulatory documents referenced in the text of the technical specifications". Exclude:

- reference "GOST 5949-75" with the name;

- reference "GOST 7566-94" with the name;

- date "from 01.02.2019" - 2 times.

Supplement "GOST 5632-2014 Stainless steels and alloys corrosion-resistant, heat-resistant and heat-resistant. Grades" with a reference to paragraph 2.1.

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7. Appendix B "Steel (alloy) grade codes". Replace the conventional designation of the alloy grade "ХН77ТЮР-VI (EI437-VI)" with "ХН77ТЮР-VI (EI437B-VI)" and "ХН77ТЮР-ID (EI437-ID)" with "ХН77ТЮР-ID (EI437B-ID)".

The examination was carried out by TC 375 "Metal products from ferrous metals and alloys" "23" 07 2021 Responsible Secretary of TC 375 "Metal products from ferrous metals and alloys" wow" S.A. Gorshkov

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