TU 14-131-1041-2008 HN58MBYu (EK171, VZh159)

I APPROVE Technical Director JSC Metallurgical Electrostal plant Yu.N. Koshelev 23.07.08

HOT-ROLLED AND FORGED RODS FROM HEAT-RESISTANT

ALLOY HN58MBYU-ID (EK171-ID, VZH159-ID)

TECHNICAL SPECIFICATIONS

TU 14-131-1041-2008

Holder of the original: JSC "Metallurgical

Electrostal plant

Validity period: from 08/07/2008 to 08/07/2013

AGREED: Chief designer FSUE "RFNC-VNIIEF" E.D. Yakovlev Deputy General Director FSUE "VIAM" B.S. Lomberg Head of Department FSUE "RFNC-VNIIEF" V.V. Ivanov Chief Technologist FSUE "RFNC-VNIIEF" V.I. Malinov Chief Technologist EMZ "Avangard" A.I. Gushchin

DEVELOPED BY: Head of Technical Department JSC Metallurgical Plant "Elektrostal" I.M. Vorobyova

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TU 14-131-1041-2008

These specifications apply to hot-rolled and forged rods made of heat-resistant alloy KhN58MBYu-ID (EK171-ID, VZh159-ID), smelted in vacuum-induction furnaces with subsequent vacuum-arc remelting. It is permitted to use hot-rolled and forged rods for subsequent hot processing.

The metal is smelted using fresh charge materials.

1. ASSORTMENT

1.1. Rods are supplied with a diameter of Ø 12÷75 mm.

In terms of shape, dimensions and maximum deviations, the rods must comply with:

- hot rolled Ø 12-55 mm - GOST 22411 2nd rolling accuracy group;

- forged Ø 60-75 mm GOST 22411.

1.2. The length of the rods is not shorter than 500 mm.

1.3. It is permitted to supply rods of other dimensions specified in the agreed specification.

2. TECHNICAL REQUIREMENTS

2.1. The chemical composition of the alloy must comply with the requirements of Table 1.

2.2. Hot rolled bars are supplied in a turned condition.

2.3. There should be no films, cracks or tears on the surface of hot-rolled and forged rods.

Local defects must be removed by gentle grinding. The grinding depth must not exceed the negative maximum deviation, calculated from the nominal size.

Individual scratches, dents, and ripples within the minus maximum deviation, calculated from the nominal size, are allowed without cleaning.

2.4. Hot rolled and forged bars are supplied without heat treatment or in a heat treated (hardened) condition.

The need for heat treatment is indicated in the order.

Heat treatment is carried out according to the following regime: hardening (1100 ± 20) °C, air cooling.

The heat treatment mode is agreed upon by the customer and indicated in the quality document.

2.5. Mechanical properties and impact toughness at room temperature, mechanical properties at 850 °C and long-term strength at 900 °C are controlled on longitudinal heat-treated samples.

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TU 14-131-1041-2008

Table 1

Mass fraction of elements, %%
Carbon	Cream- ny	Manganese	Sulfur	Phos- for	Jelly- zo	No- kel	Chromium	Pray- day	Nio- biy	Aluminium ny	Mag- ny	Boron	Itt- ryi	Lan- tan
0.04 0.08	no more					Main	26.0 28.0	7.0 7.8	2.7 3.4	1.25 1.55	according to calculation no more than
	0.8	0.5	0,013	0,013	3.0						0.03	0.005	0.03	0.03

NOTES: 1. In the finished metal, deviations from the norm of chemical composition are allowed for molybdenum plus or minus 0.1%; niobium

plus, minus 0.1%.

2. Magnesium, boron, yttrium and lanthanum are introduced into the metal by calculation and are not determined by chemical analysis.

TU 14-131-1041-2008

When delivering rods in a heat-treated condition, the samples are heat-treated according to the following regime: aging (800 ± 10) °C, holding for 10 hours, air cooling, aging (700 ± 10) °C, holding for 15 hours, air cooling.

When delivering rods without heat treatment, the samples are heat treated according to the following regime: hardening (1100 ± 20) °C, holding for 40-60 minutes, air cooling, aging (800 ± 10) °C, holding for 10 hours, air cooling, aging (700 ± 10) °C, holding for 15 hours, air cooling.

Standards for mechanical properties and long-term strength are given in Table 2.

2.6. If unsatisfactory results are obtained in tests of mechanical properties and long-term strength on at least one sample, repeat tests are carried out on twice the number of samples of the type of tests that gave unsatisfactory results. The results of repeat tests are optional.

2.7. The macrostructure of the alloy should not have shrinkage cavities, bubbles, cracks, slag inclusions, or delaminations visible without the use of magnifying devices.

2.8. The contamination of the alloy with non-metallic inclusions by average score should not exceed:

line oxides (OS) - 1.5b.

point oxides (PO) - 1.5b.

brittle silicates (SC) - 1.0b.

plastic silicates (SP) - 1.0b.

non-deformable silicates (SN) - 3.5b.

sulfides (C) - 1.0b.

nitrides line - 4.5b.

point nitrides - 4.0b.

After delivery of at least 3 heats of each size, the standards are clarified.

2.9. Ultrasonic testing of rods is carried out according to GOST 21120, quality group 1.

Ultrasonic testing of rods with a diameter of less than 30 mm is carried out in an intermediate blank.

2.10. The rods are supplied with grain size control.

The rods are supplied with a grain size no larger than 6 of GOST 5639. The standard is optional, the actual control results are indicated in the quality document.

After delivery of at least 3 heats for each size, the standards are clarified.

TU 14-131-1041-2008

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TU 14-131-1041-2008

Table 2

Test temperature °C	Mechanical properties, not less than					Long lasting strength
	Temporary resistance σ in N/ mm2 (kgf/ mm2 )	Yield strength σ 0.2 N/ mm2 (kgf/ mm2 )	Relative		Impact strength KCU J/ cm2 (kgcm/ cm2 )	Constantly applied voltage N/ mm2 (kgf/ mm2 )	Test time in hours, not less than
			elongation δ 5 %	narrowing Ψ %
Indoor 850 900	960 (98) 290 (30) -	590 (60) 265 (27) -	19 17 -	30 35 -	29 (3) -	59 (6)	50

Note: Standards are optional. After delivery of at least 3 heats of each size, standards are specified.

TU 14-131-1041-2008

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and testing methods according to GOST 5949.

The chemical composition is determined according to GOST 24018.7, GOST 24018.8, GOST 12346, GOST 12347, GOST 12348, GOST 12350, GOST 12352, GOST 12354, GOST 12357, GOST 12361, GOST 29095 or another method that ensures the required accuracy of determination.

3.2. Vacuum arc melting includes ingots melted from one initial melt.

3.3. Control of mechanical properties and long-term strength is carried out in the supplied profile on 2 samples for each type of test.

Cutting samples according to GOST 7564, option 1.

3.4. Macrostructure control is carried out according to the GOST 22838 method on 2 templates in the supplied profile.

3.5. Control of non-metallic inclusions is carried out according to the methodology of GOST 1778, method "Ш", option "Ш4".

The control is carried out in the supplied profile.

3.6. Grain size control is carried out in the supplied profile in accordance with GOST 5639.

4. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

4.1. Marking, packaging, transportation and storage according to GOST 7566.

REGISTERED: JSC Metallurgical Plant "Elektrostal" Head of the Standardization Bureau N.V. Finagina

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TU 14-131-1041-2008

Appendix 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
1	2
GOST 1778-70	3.5
GOST 5639-82	2.10; 3.6
GOST 5949-75	3.1
GOST 7564-97	3.3
GOST 7566-94	4.1
GOST 12346-78	3.1
GOST 12347-77	3.1
GOST 12348-78	3.1
GOST 12350-78	3.1
GOST 12352-81	3.1
GOST 12354-81	3.1
GOST 12357-84	3.1
GOST 12361-2002	3.1
GOST 21120-75	2.9
GOST 22411-77	1.1
GOST 22838-77	3.4
GOST 24018.7-91	3.1
GOST 24018.8-91	3.1
GOST 29095-91	3.1

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I APPROVE Technical Director JSC Metallurgical Electrostal plant I.V. Kabanov

HOT-ROLLED AND FORGED RODS FROM HEAT-RESISTANT

ALLOY HN58MBYU-ID (EK171-ID, VZH159-ID)

TECHNICAL SPECIFICATIONS

TU 14-131-1041-2008

Change #4

Holder of the original: JSC "Metallurgical Plant "Elektrostal"

Implementation date: 20.01.2015

AGREED Deputy Chief Designer FSUE "RFNC-VNIIEF" V.E. Zherebtsov Deputy General Director FSUE "VIAM" O.G. Ospennikova Chief Technologist FSUE "RFNC-VNIIEF" V.I. Malinov Chief Technologist EMZ "Avangard" S.V. Yatunin

DEVELOPED BY Head of Technical Department JSC Metallurgical Plant "Elektrostal" I.M. Vorobyova

P.2

Change #4

to TU 14-131-1041-2008

1 Clause 2.4 shall be set out in a new version:

"2.4. Hot rolled and forged bars are supplied in a heat treated (hardened) condition.

Heat treatment is carried out according to the following regime: hardening (1100 ± 20) °C, air cooling.

The heat treatment mode is indicated in the quality document."

2 Clause 2.5 shall be set out in a new version:

"2.5. Mechanical properties and impact strength at room temperature, mechanical properties and residual creep deformation at a temperature of 850 °C, long-term strength at a temperature of 900 °C are controlled on longitudinal samples taken in the as-delivered condition and heat-treated according to the following modes:

Mode 1 (double aging):

(800 ± 10) °C, 10 hours exposure, air cooling

+(700 ± 10) °C, 15 hours exposure, air cooling.

Mode 2 (four-fold aging):

(900 ± 10) °C, 5 hours, air cooling

+(800 ± 10) °C, 10 hours exposure, air cooling

+(700 ± 10) °C, 10 hours exposure, air cooling

+(650 ± 10) °C, 10 hours exposure, air cooling.

Standards for mechanical properties, residual creep deformation and long-term strength are given in Table 2."

3 Clause 2.6 shall be set out in a new version:

"2.6. If unsatisfactory results are obtained from tests of mechanical properties, long-term strength and residual creep deformation on at least one sample, repeat tests are carried out on twice the number of samples of the type that gave unsatisfactory results.

If unsatisfactory results are obtained from repeated tests on at least one sample, a repeated full heat treatment is carried out. The test results after repeated heat treatment are considered primary."

4 Clause 2.8 shall be set out in a new version:

"2.8. The alloy contamination with non-metallic inclusions according to the average score should not exceed:

line oxides (OS) - 1.0 point

point oxides (PO) - 1.0 point

brittle silicates (SC) - 1.0 point

plastic silicates (SP) - 1.0 point

non-deformable silicates (SN) - 1.0 point

sulfides (C) - 1.0 point

string nitrides (NS) - 4.0 points

point nitrides (NT) - 3.5 points »

Change #4

to TU 14-131-1041-2008

Table 2

Heat treatment mode	Test temperature, °C	Mechanical properties, not less than					Long lasting strength		Creep
		Temporary resistance σ in N/ mm2 (kgf/ mm2 )	Yield strength σ 0.2 N/ mm2 (kgf/ mm2 )	Relative		Impact strength KCU J/ cm2 (kgcm/ cm2 )	Constantly applied voltage N/ mm2 (kgf/ mm2 )	Test time in hours, not less than	Constantly applied voltage N/ mm2 (kgf/ mm2 )	Time for testing, hour.	Residual creep deformation, % no more
				elongation δ %	narrowing Ψ %
Mode 1	room	960 (98)	590 (60)	19	30	29 (3)	-	-	-	-	-
	850	290 (30)	265 (27)	17	35	-	-	-	-	-	-
	900	-	-	-	-	-	59 (6)	50	-	-	-
Mode 2	room	1000 (102)	700 (71)	20	-	29 (3)	-	-	-	-	-
	850	-	-	-	-	-	-	-	44 (4,5)	50	0.2
	900	-	-	-	-	-	59 (6)	50	-	-	-

Notes: 1. Mechanical property standards at 850°C according to mode 1 are optional.

2. Standards for mechanical properties at room temperature, long-term strength and residual creep deformation according to mode 2 are optional.

3. After delivery of at least 3 heats of each size, the standards are clarified.

4. Long-term strength tests are carried out until the samples fail.

P.4

Change #4

to TU 14-131-1041-2008

The standards for alloy contamination with nitrides (NS, NT) are optional and are specified after delivery of at least 3 melts of each size.

Registered: JSC Metallurgical Plant "Elektrostal" Head of the Standardization Bureau O.B. Shvyryaeva