GOST 14838-78

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  ГОСТ 14838-78

GOST 14838−78 Wire of aluminum and aluminum alloys for cold upsetting. Specifications (with Amendments No. 1, 2, 3, 4)

GOST 14838−78

Group В74

INTERSTATE STANDARD

WIRE OF ALUMINUM AND ALUMINUM ALLOYS
FOR COLD HEADING

Specifications

Wire of alluminium and alluminium alloys for cold upsetting.
Specifications

GST 18 1130

Date of introduction 1979−01−01

INFORMATION DATA

1. APPROVED AND promulgated by the Decree of the State Committee of standards of Ministerial Council of the USSR from 29.03.78 N 862

Change No. 3 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 12, 21.11.97)

Was the Technical Secretariat of MGS N 2721

The adoption of the changes voted:

The name of the state	The name of the national authority for standardization
The Republic Of Azerbaijan	Azgosstandart
The Republic Of Armenia	Armastajad
The Republic Of Belarus	Gosstandart Of Belarus
The Republic Of Kazakhstan	Gosstandart Of The Republic Of Kazakhstan
Kyrgyz Republic	Kyrgyzstandart
Russian Federation	Gosstandart Of Russia
The Republic Of Tajikistan	Tajikistandart
Turkmenistan	The main state inspection of Turkmenistan
Ukraine	Gosstandart Ukrany

2. REPLACE GOST 14838−69

3. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	The number of the paragraph, subparagraph
GOST 9.510−93	5.3
GOST 1497−84	4.7
GOST 3221−85	4.1
GOST 4784−97	2.1
GOST 6507−90	4.2
GOST 7727−81	4.1
GOST 11739.1−90	4.1
GOST 11739.2−90	4.1
GOST 11739.3−99	4.1
GOST 11739.4−90	4.1
GOST 11739.5−90	4.1
GOST 11739.6−99	4.1
GOST 11739.7−99	4.1
GOST 11739.8−90 — GOST 11739.10−90	4.1
GOST 11739.11−98 — GOST 11739.13−98	4.1
GOST 11739.14−99	4.1
GOST 11739.15−99	4.1
GOST 11739.16−90 — GOST 11739.19−90	4.1
GOST 11739.20−99	4.1
GOST 11739.21−90	4.1
GOST 11739.22−90	4.1
GOST 11739.23−99	4.1
GOST 11739.24−98	4.1
GOST 12697.1−77 — GOST 12697.12−77	4.1
GOST 12697.13−90	4.1
GOST 12697.14−90	4.2
GOST 14192−96	5.3.1
GOST 25086−87	4.1
OST 1 90148−74	4.5

(Changed edition, Rev. N 4).

4. Limitation of actions taken by Protocol No. 3−93 Interstate Council for standardization, Metrology and certification (ICS 5−6-93)

5. REPRINT (March 1999) with Amendments No. 1, 2, 3, approved in may 1983, may 1988, April 1998 (IUS 9−83, 8−88, 6−98)

The Change No. 4 adopted by the Interstate Council for standardization, Metrology and certification (minutes dated 10.09.2010 N 43). The state developed by Russia. By order of the Federal Agency for technical regulation and Metrology of 21.12.2010 No. 902-St introduced on the territory of the Russian Federation from 01.04.2011

N 4 a change made by the manufacturer of the database in the text IUS N 3, 2011

AMENDED, published in the IUS N 10, 2013

An amendment made by the manufacturer of the database

This standard applies to the wire of aluminum and aluminum alloys for products produced by cold heading, designed for the needs of national economy and for export.

(Changed edition, Rev. N 2).

1. ASSORTMENT

1.1. The wire is subdivided in precision manufacturing:

normal accuracy;

high accuracy — P.

1.2. The diameter of the wire and limit deviation shall be as specified in table.1.

Table 1

Nominal diameter, mm	Limit deviations of the diameter of wire, mm		Theoretical weight of 1000 m of wire, kg
normal accuracy	increased accuracy	normal accuracy	increased accuracy
1,4	4,188	4,218
1,5	-0,04	-0,03	4,817	4,850
1,6	5,490	5,525
2,0	8,578	8,621
2,3	11,382	11,432
2,5	13,471	13,525
2,6	-0,05	-0,04	14,582	14,638
2,8	16,935	16,996
3,0	19,464	19,529
3,5	26,556	26,632
3,8	31,339	31,422
4,0	34,486	Thirty four thousand seven hundred forty seven
4,5	43,744	44,039
4,8	49,827	50,141
5,0	-0,08	-0,05	54,102	54,430
5,5	65,559	65,920
5,8	72,962	73,342
6,0	78,116	78,510
6,5	91,205	92,057
6,8	99,901	100,792
7,0	105,918	106,835
7,5	121,729	122,713
7,8	131,744	132,767
8,0	-0,12	-0,06	138,640	139,690
8,5	156,651	157,767
8,8	167,985	169,141
9,0	175,762	176,943
9,5	195,972	197,219
9,8	203,625	209,912
10,0	217,281	218,595
12,0	-0,2	-	311,417	-

(Changed edition, Rev. N 2).

1.2.1. By agreement with the consumer it is allowed manufacture of wire intermediate sizes not shown in table.1. It takes maximum deviations of the nearest smaller size.

1.2.2. Depending on the brand of alloy wire produced within diameters specified in the table.1A.

Table 1A

Grade aluminum and aluminum alloy	Wire diameter, mm
AD1	From 1.4 to 10.0
AMC	«1,4» 10,0
Amg2	«1,4» 10,0
Amg5p	«1,4» 10,0
D1P	From 1.4 to 12.0
D16P	Is 1,5 7,8
D18	«1,4» 10,0
V65	«1,4» 10,0

1.2.1; 1.2.2. (Added, Rev. N 1).

1.3. Wire wound into a coil right separatornyi rows without bending.

1.4. The mass of the segment wire is specified in table.2.

Table 2

Wire diameter, mm	The mass of the segment of wire, kg
From 1.4 to 2.0	From 10.0 to 40.0
SV. A 2.0 «to 4.5	«15,0» 40,0
«4,5» 12,0	«A 4.0» 40,0

Note. The party allowed no more than 10% (by weight) of wire with a mass cut at least 4 kg.

1.5. The roundness of the wire must not exceed the limit deviation for diameter.

1.6. Theoretical weight of 1000 m of wire calculated for normal and high accuracy with a nominal diameter with subtraction of the half of the maximum deviations.

When defining a theoretical weight of 1000 m of wire for a source value accepted density of aluminum alloys D1P, B65, equal of 2.80 g/cm.

To calculate the theoretical weight of 1000 m of wire from other brands should use the conversion factors listed in Annex 1.

(Changed edition, Rev. N 2).

1.7. If no purchase order instructions on manufacturing precision wire made of normal accuracy.

Examples of symbols

Wire of aluminum AD1 brands, with a diameter of 9.0 mm, normal precision manufacturing:

Wire AD1 9 GOST 14838−78

The same high manufacturing precision (P):

Wire AD1 9 P GOST 14838−78

2. TECHNICAL REQUIREMENTS

2.1. Wire produced in accordance with the requirements of this standard in accordance with technical documentation approved in the established order. Wire made of aluminum brand AD1 and aluminium alloys AMTS, Amg2, Amg5p, D1P, D16P, D18, V65 with the chemical composition according to GOST 4784.

(Changed edition, Rev. N 2).

2.2. Wire is manufactured in cold-worked condition.

2.3. Shear strength of wire shall be those specified in table.3.

Table 3

Grade aluminum and aluminum alloy	The test samples	Wire diameter, mm	Shear strength, MPa (kgf/mm), not less
AD1	Cold-worked	From 1.4 to 10.0	60 (6,0)
AMC	70 (7,0)
Amg2	120 (12,0)
Amg5p	155 (16,0)
D1P	Hardened and aged	From 1.4 to 10.0	235 (24,0)
D16P	From 1.5 to 7.8	265 (27,0)
D18	From 1.4 to 10.0	185 (19,0)
V65	From 1.4 to 7.5	245 (25,0)
SV. 7.5−10.0	240 (24.5 cm)

Note. By agreement with the consumer it is allowed manufacture of wire of alloy grade V65 diameter from 7.8 to 10.0 mm with shear strength not less than 235 MPa (24,0 kgf/mm).


(Changed edition, Rev. N 1, 4).

2.4. Mechanical properties of wire with a diameter of 12 mm alloy D1P in the hardened and aged condition shall be: ultimate tensile strength not less than 370 MPa (38 kgf/mm), elongation not less than 12%.

(Changed edition, Rev. N 1).

2.5. The surface of the wire should not have cracks, delamination, captured, bubbles, sunsets, nicks, burrs, sharp bends and corrosion spots.

2.6. On the surface of the wire allowed scratches, traces of broach (risks), punctures, dents, and abrasion, if the test mopping them does not show a wire for the limit deviations of the diameter and the depth of Stripping is less than half the maximum deviations in diameter.

2.7. On the surface of the wire allowed the color of a tint, dark and light spots without roughness.

(Changed edition, Rev. N 1).

2.8. Allowed local gentle Stripping the wire, if it does not display the size of the wire for the negative maximum deviations.

2.9. The wire shall withstand the test rasklepyvajut to obtain a flat head with a height of 0.5of the nominal diameter of the wire.

Flat head needs to be in terms of round or slightly oval shape. The lateral surface should be flat and smooth without cracks, tears and sunsets.

(Changed edition, Rev. N 1, 2, 3).

3. ACCEPTANCE RULES

3.1. Wire apply to the acceptance of the parties. The party should consist of wire of the same brand of aluminium or aluminium alloy, one bottoms, of the same diameter and the same precision workmanship and must be issued a document about quality that contains:

trademark or the name and trademark of manufacturer;

the name of the consumer;

symbol wire;

batch number;

room Bay;

the weight of the party;

the results of the tests;

the date of shipment;

the designation of this standard.

The party can be composed of several wire heats provided that each melting should be monitored for compliance with the requirements of this standard.

3.2. To determine the chemical composition of the alloying elements and main impurities — take one Bay from the party. Other impurities are not controlled.

Allowed the manufacturer to determine the chemical composition of the aluminum or aluminum alloy on each cast.

3.1; 3.2. (Changed edition, Rev. N 1).

3.3. Checking the size of each Bay is subjected to wire in at least two areas in mutually perpendicular directions.

3.4. Checking the quality of the surface subjected to each Bay of the wire.

3.5. Check the wire to cut is subjected to 10% coves of the party, but not less than one Bay from each party.

3.5. Check wire alloy D1P tensile subjected to 2% coves of the party, but not less than one Bay from each party.

(Added, Rev. N 1).

3.6. To check the wire to rasklepyvajut select the number of bays specified in the table.4, but not less than one Bay from each party.

Table 4

Aluminum grade and aluminum alloy	The number of test bays from the party wire, %, not less
hard	hardened and aged
AD1	10	-
AMC	10	-
Amg2	10	-
Amg5p	10	-
D1P	25	10
D16P	25	25
D18	25	10
V65	25	25

3.7. If unsatisfactory test results of at least one of the indicators it is carried out re-testing at twice the sample taken from the same control coils. The results of repeated tests apply to the entire party, allowed the manufacturer to conduct routine monitoring of inlets.

(Changed edition, Rev. N 1).

4. TEST METHODS

4.1. Determination of the chemical composition of the wire, of aluminium should be carried out by chemical method according to GOST 12697.1 — GOST 12697.14 or spectral method GOST 3221; of aluminum alloys — chemical method according to GOST 25086, 11739.1 GOST — GOST 11739.24 or spectral method GOST 7727.

(Changed edition, Rev. N 1, 3).

4.2. The measurement of the diameter of the wire is carried out with a micrometer according to GOST 6507 or other measuring instrument, to ensure the necessary measurement accuracy.

(Changed edition, Rev. N 2).

4.3. The surface of the wire inspected without the use of optical devices.

4.4. The heat treatment of the samples for testing cut and rasklepyvajut shall be as specified in Appendix 2.

4.5. Test wire shear is carried out according to OST 1 90148*.

For test from each monitored bays at both ends select one sample.

_______________

* Probably, the error of the original. Should read OST 1.90148. The document is not given. For additional information, please refer to the link. — Note the manufacturer’s database.

(Changed edition, Rev. N 3).

4.6. For the test wire to rasklepyvajut from each Bay controlled the two ends of a selected one sample.

(Changed edition, Rev. N 2).

4.6.1. A limit on the size of the clearance between the diameter of the holes of the fixture and the wire is installed:

not more than 0.10 mm for wire diameter up to 5.8 mm;

not more than 0,15 mm — wire with a diameter of 6.0 mm or more.

4.6.2. The height of the clamped in the fixture of the sample depending on the diameter of the wire must be:

8.0 mm — for wire diameter of 1.4 to 3.0 mm;

5.0 mm — for wire diameter SV 3.0 to 5.8 mm;

5.5 mm — for wire diameter of St 5.8 to 8.0 mm;

7.5 mm — for wire diameter of 8.0 SV to 10.0 mm.

(Changed edition, Rev. N 2).

4.6.3. The height of the protruding part of the specimen at rasklepyvajut, depending on the brand of alloy and diameter of the wire shall conform to the standards specified in table.5.

Table 5

Aluminum grade and aluminum alloy	Wire diameter, mm	The height of the protruding part of the specimen the diameters of wire
hard	hardened and aged
AD1	From 1.4 to 10.0
AMC	From 1.4 to 10.0	-
Amg2	From 1.4 to 10.0
Amg5p	From 1.4 to 10.0
D1P	From 1.4 to 4.5	1,5
SV. Of 4.5 to 10.0	1,4
D16P	1.5 to 4.5	1,5	1,4
SV. 4.5 to 7.8	1,3
D18	From 1.4 to 4.5	1,5
SV. Of 4.5 to 10.0	1,4
From 1.4 to 4.5	1,5
SV. Is 4.5 to 8.0	1,4
V65	SV. Of 8.0 to 9.8	1,3
SV. Of 9.8 to 10.0	1,3	1,2

(Changed edition, Rev. N 1).

4.6.4. Deviation in height of the samples intended for testing of wire on rasklepyvajut, shall be ±5%.

(Added, Rev. N 1).

4.7. Testing of mechanical properties wire tensile is carried out according to GOST 1497 with the calculated length of the sample, equal to 10 diameters of wire.

(Changed edition, Rev. N 1).

4.8. The time during which you are allowed to test in rasklepyvajut on samples of cold-worked condition, is not limited, and the samples in the quenched and aged condition is selected in accordance with Annex 3.

5. LABELING, PACKAGING AND TRANSPORTATION

5.1. Each Bay is tied into three places with wire of aluminum or aluminum alloy.

5.2. To each coil of wire shall be attached a label showing:

grade alloy;

batch number;

rooms Bay;

the wire diameter and precision manufacturing.

(Changed edition, Rev. N 1).

5.3. Temporary corrosion protection, packaging, transportation and storage — the graveyard 9.510.

(Changed edition, Rev. N 2, 3).

5.3.1. Transport marking of packages according to GOST 14192 with the following additions:

the name of the semi-finished product, grade, lot number.

5.3.2. Coded wire intended for export, is carried out in accordance with the order of foreign trade enterprises.

5.3.1; 5.3.2. (Added, Rev. N 2).

5.4. (Deleted, Rev. N 1).

ANNEX 1 (reference). CONVERSION FACTORS TO CALCULATE THE APPROXIMATE THEORETICAL WEIGHT OF 1 M OF WIRE OF ALUMINUM AND ALUMINUM ALLOYS

ANNEX 1
Reference

For aluminum brand AD1				0,906
For	alloy	brand	AMC	0,907
«	«	«	Amg2	Of 0.905
«	«	«	Amg5p	0,904
«	«	«	D16P	0,908
«	«	«	D18	0,908

ANNEX 2 (mandatory). THE HEAT TREATMENT OF WIRE

ANNEX 2
Mandatory

The heat treatment
Grade aluminum alloy	Hardening		Aging
Wire diameter, mm	Temperature, °C	Exposure time in air electric furnace, min.	Temperature, °C	The time of exposure, h
D1P	From 1.4 to 5.0	500±5	20	Room	96
SV. 5.0 to 6.0	500±5	30	The same	96
SV. Of 6.0 to 12.0	500±5	60	«	96
D16P	From 1.5 to 5.0	495±5	20	Room	96
SV. 5.0 to 6.0	495±5	30	The same	96
SV. Of 6.0 to 7.8	495±5	60	«	96
D18	From 1.4 to 5.0	500±5	20	Room	96
SV. 5.0 to 6.0	500±5	30	The same	96
SV. Of 6.0 to 10.0	500±5	60	«	96
V65	From 1.4 to 3.9	525±5	25	-	-
SV. The 3.9 to 5.0	525±5	45	-	-
SV. 5.0 to 6.0	525±5	60	-	-
SV. Of 6.0 to 10.0	525±5	100	-	-

Note. The aging of the wire alloy V65 all diameters is carried out at the 1st cycle, at a temperature (75±5) °C for 24 h; in the 2nd mode at room temperature for 240 hours

Allowed to carry out aging of alloy grade V65 at a temperature of (90±5) °C for 6−8 hours and grades D1P, D16P, D18 — at a temperature of (40±5) °C for 12 h

(Changed edition, Rev. N 1).

APPENDIX 3 (obligatory). THE TIME OF THE TEST HEAT TREATED SAMPLES FOR RASKLEPYVAJUT

APPENDIX 3
Mandatory

Grade aluminum alloy	Wire diameter, mm	Test time
D1P	From 1.4 to 10.0	Not later than 2 h after quenching
D16P	Is 1,5 7,8	Not later than 20 min after quenching
D18, V65	«1,4» 10,0	No time limit in the state after quenching and aging

(Changed edition, Rev. N 1, 2).


The text of the document is verified by:
the official publication of the
M.: IPK Publishing house of standards, 1999

Revision of the document including
changes and amendments prepared
ZAO «Kodeks»