TU 48-21-16-78

USSR MINISTRY OF NON-FERROUS METALLURGY

UDC 669.245-462 Group B64 I APPROVE CHIEF ENGINEER VPO "SOYUZTSVETMETOBRABOTKA" G.I. SARUL "21" July 1978

NON-MAGNETIC NICKEL-COPPER TUBES

VACUUM MELTING ALLOYS

Technical conditions

TU 48-21-16-78

(replaces TU 48-21-16-72)

Valid from 21.07.78 to 21.07.83

AGREED

CHIEF ENGINEER REVDINSKY PLANT OF NON-FERROUS MATERIALS V.M. POPOV "25" 04 1978 DEPUTY DIRECTOR OF THE INSTITUTE "GIPROTSVETMETOBRABOTKA" A.M. RYTIKOV "28" 04 1978

1978

These specifications apply to thin-walled tubes made of non-magnetic vacuum-melted nickel-copper alloys used for special purposes.

Examples of conventional designations.

The tube is drawn, round, with an outer diameter of 1.0 mm and a wall thickness of 0.2 mm, solid, made of NM40A alloy.

Tube DKRT 1.0x0.2 NM40A TU 48-21-16-78

The tube is drawn, round, solid, in coils with an outer diameter of 0.36 mm and a wall thickness of 0.05 mm made of NM60A alloy.

Tube DKRT 0.36x0.05 BUKHT NM60A TU 48-21-16-78
where T is drawn;

KR - round;

T - hard.

1. TECHNICAL REQUIREMENTS

1.1. Thin-walled tubes made of non-magnetic nickel-copper alloys must comply with the requirements of these technical conditions.

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1.2. Basic parameters and dimensions.

1.2.1. The dimensions of the tubes and the permissible deviations for them must comply with the requirements of Table 1.

Table 1

O.D mm	Admission to external diameter mm	Thickness walls mm	Permissible deviations in wall thickness mm	Weight of 1 m of tubes gr at density 8.87 g/ cm3
				minimum	maximum
1	2	3	4	5	6
0.30 0.35 0.36 0.45 0.55 0.65 0.65 0.80 0.95 1.0 1.0 1,2 1,2 1.3 1.4 1.4 1.5 1.6 1.6 1.8 1.8 2.0	+ 0.008 - 0.006 " " " " " " " " " " " " " " " " " " " " + 0.008 - 0.006	0.05 0.05 0.05 0.05 0.05 0.07 0.10 0.05 0.10 0.2 0.3 0.2 0.3 0.15 0.2 0.3 0.3 0.2 0.3 0.2 0.3 0.2	± 0.006 ± 0.006 " " " " ± 0.01 ± 0.006 ± 0.01 ± 0.02 ± 0.03 ± 0.02 ± 0.03 ± 0.015 ± 0.02 ± 0.03 ± 0.03 ± 0.02 ± 0.03 ± 0.02 ± 0.03 ± 0.02	0.307 0.367 0.380 0,490 0.606 1,034 1,388 0.926 2,140 4,079 5,442 5,081 6,945 4,360 6,083 8,449 9,200 7,086 9,952 8,088 11,455 9,090	0.392 0.471 0.486 0.627 0.752 1,231 1,678 1,172 2,597 4,826 6,228 6,052 8,066 5,250 7,277 9,904 10,823 8,502 11,741 9,727 13,579 10,951

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1	2	3	4	5	6
2.0 2.0 2,2 2,2 2,2 2.4 2.4 2.4 2.6 2.6 2.6 2.8 2.8 2.8 3.0 3.0 3.0 3.2 3.2 3.2 3.4 3.4 3.4 3.6 3.6 3.6	+ 0.008 - 0.006 " ± 0.01 " " " " " ± 0.01 " " ± 0.01 " " " " " ± 0.02 " " " " " " " "	0.3 0.5 0.2 0.5 0.3 0.2 0.3 0.5 0.2 0.3 0.5 0.2 0.3 0.5 0.2 0.3 0.5 0.2 0.3 0.5 0.2 0.3 0.5 0.2 0.3 0.5	± 0.03 ± 0.05 ± 0.02 ± 0.05 ± 0.03 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05	12,959 19,343 10,073 21,799 14,432 11,075 15,936 24,304 12,077 17,439 26,810 13,079 18,942 29,316 14,081 20,446 31,821 15,034 21,874 34,201 16,036 23,377 36,707 17,038 24,881 39,213	15,416 22,325 12,190 25,418 17,272 13,413 19,109 28,480 14,638 20,947 31,543 15,863 22,784 34,605 17,088 24,622 37,667 18,344 26,551 40,883 19,599 28,388 43,945 20,824 30,226 47,008

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1	2	3	4	5	6
3.8 3.8 3.8 4.0 4.0 4.0 4.2 4.4 4.6 4.8 5.0 6.0 6.0 6.0 6.0 7.0 8.0 8.0 8.0 11.2 16.0 16.70 18.0 20.0 22.0 22.0 22.0 24.0	± 0.02 " " " " " " " " " " ± 0.02 ± 0.02 ± 0.02 ± 0.02 ± 0.03 ± 0.06 ± 0.06 ± 0.06 ± 0.10 ± 0.10 ± 0.10 ± 0.10 ± 0.15 ± 0.15 ± 0.15 ± 0.15 ± 0.15	0.2 0.3 0.5 0.2 0.3 0.5 0.5 0.5 0.5 0.5 0.5 0.12 0.15 0.2 0.25 0.3 0.80 1.00 1,2 0.30 1.00 1.00 1.0 1.0 1.0 1.5 2.0 0.8	± 0.02 ± 0.03 ± 0.05 ± 0.02 ± 0.03 ± 0.05 ± 0.05 ± 0.05 ± 0.05 ± 0.05 ± 0.05 ± 0.01 ± 0.015 ± 0.02 ± 0.025 ± 0.03 ± 0.08 ± 0.10 ± 0.12 ± 0.03 ± 0.10 ± 0.10 ± 0.10 ± 0.10 ± 0.10 ± 0.15 ± 0.2 ± 0.08	18,040 27,200 41,718 19,042 27,887 44,224	22,049 32,063 50,007 23,274 33,901 53,132

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1.3. Characteristics (properties)

1.3.1. The tubes are made from non-magnetic vacuum-melted nickel-copper alloys.

The chemical composition of the alloys must comply with the standards specified in Table 2.

Table 2

Alloy brand	Content of main components, %										Content
	copper		nickel		silicon		tin		titanium		iron		magnesium		sulfur		carbon		phosphorus
NM40A	39-41		OST		-		-		no more than 0.07		0.05		0.01		0.002		0.03		0.002
NM60A	61-63		OST		0.15-0.25		0.2- 0.3		-		0.05		0.01		0.002		0.02		0.002
Impurities in % no more than
lead		bismuth		antimony		arsenic		zinc		oxygen		tin		hydrogen		nitrogen		silicon
0.002		0,001		0,001		0,001		0.004		0.002		0,001		0,0004		0,001		0.05
0.002		0,001		0,001		0,001		0.002		0.003		-		-		-		-

1.3.2. Tubes with a diameter of up to 0.45 mm inclusively made of NM40A alloy and with a diameter of 0.36 mm made of NM60A alloy must be supplied in lengths of at least 1300 mm. Tubes with a diameter of more than 0.45 mm are supplied in lengths of at least 1 meter. It is permitted to supply tubes with a length of at least 400 mm in quantities of no more than 10% of the batch.

1.3.3. Tubes with diameters of 0.30, 0.36 and 0.45 mm made of NM60A alloy are supplied in coils. The outer diameter of the coils is 50-60 mm. The length of the tube wound into a coil must not be shorter than 1350 mm.

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1.3.3. Tubes must be supplied in a solid (non-annealed) state.

1.3.4. The surface of the tubes (external and internal) must be clean and free of defects detectable with the naked eye. Traces of drawing and straightening (scratches, rings) are allowed, as well as defects that do not bring the dimensions of the tubes during control cleaning beyond the values of maximum deviations in dimensions.

1.3.5. The ovality of the tubes should not take their dimensions beyond the maximum deviations for the outer diameter.

For pipes with an outside diameter of 11.2 mm or more with a ratio of outside diameter to wall thickness equal to or greater than 20, ovality is allowed within the limits of double the maximum deviations in diameter.

Ovality is not set for pipes supplied in coils (while maintaining the average diameter within the tolerance limits).

1.3.6. Tubes supplied at the ends must be straight. The curvature of the tubes must not exceed 5 mm per 1 m of length.

1.3.7. At the customer's request, tubes measuring 0.30x0.05; 0.36x0.05 and 0.45x0.05 mm made of NM60A alloy must withstand a leak test under a pressure of 100 kgf/ ^cm2 . The holding time is not less than 10 sec.

1.4. Packaging and labeling

1.4.1. The tubes must be tied into bundles in at least three places, the coils are tied in two places and tied into packs of 50-100 coils. The bundles must be wrapped in paper according to GOST 8273-75 and packed in solid wooden boxes lined inside with waxed paper according to GOST 9569-65.

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The gross weight of the box must not exceed 80 kg for pipes with an outer diameter of 4 mm or less, 2500 kg for pipes with a diameter greater than 4 mm.

1.4.2. Each box must contain a packing list indicating:

name or trademark of the manufacturer;

alloy grades;

tube sizes;

masses of tubes;

batch numbers;

stamp of the quality control department;

designations of these specifications.

1.4.3. Boxes are marked according to GOST 14192-71 with the following additional data:

alloy grades;

batch numbers;

designations of these specifications.

1.4.4 For each batch of tubes a document is sent certifying their quality, which indicates:

name or trademark of the manufacturer;

alloy grade;

tube size;

lot weight;

stamp of the quality control department;

designation of these TU.

Note: The length of the pipes in meters is indicated for pipes with a diameter of up to 4.0 mm.

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2. ACCEPTANCE RULES

2.1. Acceptance rules must comply with the requirements set out in Section 3 of GOST 13548-77.

2.2. For leak testing in accordance with paragraph 1.3.7. 10% of the tubes from the batch are selected.

3. CONTROL METHODS

3.1. Inspection of the tube surface is performed without the use of magnifying devices. To inspect the inner surface of tubes with a diameter of 1 to 6 mm, one sample 50 mm long is taken from each tube being tested, cut lengthwise and inspected. Inspection of the inner surface of tubes with a diameter greater than 6 mm is performed on an illuminated screen.

The inner surface of tubes Ø 1.5-6.0 mm with a wall thickness of more than 0.3 mm is not controlled.

3.2. The outer diameter of tubes with a diameter greater than 4 mm is controlled by a micrometer in accordance with GOST 6507-60, with a diameter of 4 mm and less - by a gauge manufactured according to regulatory and technical documentation approved in the established manner or by another measuring instrument that ensures the appropriate measurement accuracy.

3.3. The wall thickness of Ø 4 mm and less is checked as follows: 200 mm long samples are cut from six tubes, three samples are weighed at a time and the linear density of 1 m of tubes is determined based on the weighing results. The linear density of the tubes must be within the minimum and maximum values specified in Table 1. The weighing error must not exceed ± 2% of the mass of the tubes.

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The wall thickness of tubes with a diameter greater than 4 mm is controlled using a micrometer in accordance with GOST 6507-60.

3.4. The curvature of the tubes is checked as follows: the tube is placed on a flat surface, a verification ruler according to GOST 8026-75 is applied to the concave side of the tube and the greatest deviation of the tube from the ruler is measured over a length of 1 m using a feeler gauge according to GOST 882-75.

For tubes with a diameter of less than 1 mm, curvature is not controlled.

3.5. The chemical composition of tubes must be determined in accordance with GOST 6689.1-75 - GOST 6689.22-75 and the manufacturer's standard. The chemical composition must be determined on five samples taken from different tubes in a batch. At the manufacturer's plant, sampling for determining the chemical composition may be performed during casting or from ingots.

3.6. The leak test is carried out as follows: tubes with ends sealed at one end are lowered into clean water, and air is passed through the other end of the tube under pressure in accordance with paragraph 1.3.7. If air bubbles appear on the surface of the tube, the tube is considered to have failed the test.

4. TRANSPORTATION AND STORAGE

4.1. Tubes are transported in covered vehicles. During transportation, tubes must be protected from mechanical damage, contamination, contact with moisture and active chemicals.

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4.2. Tubes must be stored in closed rooms that prevent mechanical damage to the tubes, exposure to moisture and active chemical reagents.

5. SUPPLIER'S WARRANTIES

5.1. The manufacturer guarantees that thin-walled tubes made of non-magnetic nickel-copper alloys comply with the requirements of these technical conditions, provided that the consumer complies with the operating conditions established by the technical conditions.

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APPENDIX 1

List of documents referenced in TU 48-21-16-78.

1. 2. 3. 4. 5. 6. 7.

GOST 8273-75 GOST 9569-65 GOST 13548-77 GOST 6507-60 GOST 8026-75 GOST 882-75 GOST 6689.1-75 - GOST 6689.22-75

Wrapping paper. Waxed paper. Thin-walled copper and brass tubes. Micrometers with a division value of 0.07 mm. Verification rulers. Types, main parameters. Technical requirements. Probes. Types. Main parameters. Technical requirements. Nickel and copper-nickel alloys.

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APPENDIX 2

Change Registration Sheet

No. p/p change	Number of sheets (p.)				Total sheets	Document No.	Entrance. № sop- ditch. doc.
	changed	replaced	new	cancelled.

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OKP 18476000 APPROVED VPO "Soyuztsvetmetobrabotka" 21.06. 1983 AGREED with the institute "Giprotsvetmetobrabotka" 16 .07. 1983 Right: (signature and seal)

UDC Group B 64

NON-MAGNETIC NICKEL-COPPER TUBES

VACUUM MELTING ALLOYS

Technical conditions

TU 48-21-16-78

Change #1

The term of introduction is from 01.09.83.

1. The validity period of the technical conditions shall be extended until 01.08.88.

2. Supplement Table 1 with new dimensions

Dimensions, mm

O.D	Maximum deviations for the outer diameter	Wall thickness	Maximum deviations in wall thickness	Theoretical mass of 1 m of tubes, g, at a density 8.87 g/ cm3		OKP code
				min.	Max.
1	2	3	4	5	6	7
0.45 1.15 1.31 2.00	+ 0.008 - 0.006	0.03 0.20 0.20 0.04	± 0.005 ± 0.02 ± 0.02 ± 0.01	0.29 4.83 5.64 1.65	0.41 5.75 6.73 2.74

3. p. 1.3.1. supplement and read as amended:

"The tubes are made from non-magnetic nickel-copper vacuum-melted alloys. Particularly thin-walled tubes Ø 0.45 x 0.03 and Ø 2.0 x 0.04 mm are made from the NM40A alloy.

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4. The chemical composition of the alloys must comply with the standards specified in Table 2.

Table 2

Alloy brand	Contents of the main components					Content
	Copper	Silicon	Tin	Titanium	Nickel	Iron	Magnesium	Sulfur	Carbon
NM40A	39-41	-	-	no more than 0.07	Ost.	0.05	0.01	0.002	0.03
NM60A	58.5- -60.5	0.1- -0.2	0.2- -0.3	-	Ost.	0.05	0.01	0.002	0.02

impurities, %, not more than
Phosphorus	Lead	Bismuth	Antimony	Arsenic	Zinc	Oxygen	Tin	Hydrogen	Nitrogen	Silicon	Total
0.002	0.002	0,001	0,001	0,001	0.004	0.002	0,001	0,0004	0,001	0.05	-
0.002	0.002	0,001	0,001	0,001	0.002	0.003	-	-	-	-	0.25

5. p. 1.3.2. add: "The length of particularly thin-walled tubes must be at least 700 mm or a multiple thereof."

6. p. 1.3.4. add: "On particularly thin-walled pipes Ø 0.45 mm, pores are allowed in an amount of no more than 1 piece per 700 mm length. The number of non-solid pipes should not exceed 10% of their total number in the batch. The pore size should not exceed 0.1 mm.

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7. p. 1.3.6. The curvature of particularly thin-walled tubes should not exceed 10 mm over a length of 1 meter.

8. In paragraph 1.4.1 of GOST 9569-65, replace with GOST 9569-79, in paragraph 1.4.3 of GOST 14192-71, replace with GOST 14192-77, in paragraphs 3.2 and 3.3 of GOST 6507-60, replace with GOST 6507-78, in paragraph 3.5 of GOST 6689.1-75 - GOST 6689.22-75, replace with GOST 6689.0-80 - GOST 6689.23-80, and in Appendix 1 to the TU, replace the GOST numbers accordingly.

9. In Appendix 1, paragraph 3, set out the following as amended:

"GOST 13548-77 Thin-walled tubes made of nickel and nickel alloys. Technical conditions."

In point 4, the division value should be corrected from 0.07 to 0.01.

In Appendix 1, include paragraph 8 as amended:

"8. GOST 14192-77 Marking of goods."

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OKP 18 4760 APPROVED by the manufacturing organization "11" 06 1988 AGREED with the State Authority military reception "29" 02 1988 with the customer "02" 02 1988 Right:

UDC Group B64

NON-MAGNETIC NICKEL-COPPER TUBES

VACUUM MELTING ALLOYS

TECHNICAL SPECIFICATIONS

THAT 48-21-16-78

CHANGE #2

Valid from 1.08.88

to

1. The validity period of the technical conditions shall be extended until 01.08.93.

OKP code 18 4760

UDC Group B64 I APPROVE Chief Engineer of NPO "Tsvetmetobrabotka" G.I. Sarul "4" 08 1989

NON-MAGNETIC TUBES

NICKEL-COPPER ALLOYS VACUUM MELTING

TECHNICAL SPECIFICATIONS

TU 48-21-16-78

CHANGE #3

Effective date: 01.09.89

1. p. 1.3.6. add: "The curvature of tubes with a wall thickness of 0.5 mm or more is established by agreement between the manufacturer and the consumer."

Chief Engineer Novogrudok plant gas equipment A.I. Fedotov "4" 07 1989 Head of the State acceptance at the Revda plant OCM G.V. Davydov "29" 06 1989

Chief Engineer Revda Non-Ferrous Metals Plant A.I. Ryaposov "04" 07 1989 Deputy director of the institute "Giprotsvetmetobrabotka" V.N. Fedorov "28" 07 1989