GOST 11069-2001

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  ГОСТ 11069-2001

GOST 11069−2001 primary Aluminium. Brand

GOST 11069−2001

Group W51

INTERSTATE STANDARD

ALUMINIUM PRIMARY

Brand

Primary aluminium. Grades

ISS 77.120.10
GST 17 1210

Date of introduction 2003−01−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 99 «Aluminium», all-Russian aluminium-magnesium Institute (JSC «YOU»)

INTRODUCED by Gosstandart of Russia

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 20 dated November 1, 2001)

The adoption voted:

3 In paragraphs 3.2 and 5.3 of this standard incorporates requirements of the European standard EN 573−3-1994* «aluminum and aluminum alloys. Chemical composition and form of semi-finished products. Part 3"
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* Access to international and foreign documents referred to here and hereinafter, can be obtained by clicking on the link. — Note the manufacturer’s database.

4 Resolution of the State Committee of the Russian Federation for standardization and Metrology dated 17 may 2002 N 195th St interstate standard GOST 11069−2001 introduced directly as state standard of the Russian Federation from January 1, 2003

5 REPLACE GOST 11069−74

6 EDITION (March 2004) with Amendment (ICS 1−2003)

The re-release (as of April 2008)

1 Scope

This standard establishes requirements for the grades of primary aluminum and high technical purity, produced in liquid form, in the form of pigs, ingots, wire rod, strips, etc.

2 Normative references

The present standard features references to the following standards:

GOST 3221−85 Aluminium primary. Methods of spectral analysis

GOST 7229−76 Cables, wires and cords. Method of determination of electrical resistance of conductors and conductors

GOST 11739.10−90 Alloys aluminium cast and wrought. Method for the determination of lithium

GOST 12697.1−77 Aluminum. Methods for determination of vanadium

GOST 12697.2−77 Aluminum. Methods for determination of magnesium

GOST 12697.3−77 Aluminum. Methods for determination of manganese

GOST 12697.4−77 Aluminum. Method for the determination of sodium

GOST 12697.5−77 Aluminum. Method for the determination of chromium

GOST 12697.6−77 Aluminum. Method for determination of silicon

GOST 12697.7−77 Aluminum. Methods of iron determination

GOST 12697.8−77 Aluminum. Methods for determination of copper

GOST 12697.9−77 Aluminum. Methods for determination of zinc

GOST 12697.10−77 Aluminum. Method of determining titanium

GOST 12697.11−77 Aluminum. Method for determination of lead

GOST 12697.12−77 Aluminum. Methods for determination of arsenic

GOST 12697.13−90 Aluminium. Methods for the determination of gallium

GOST 12697.14−90 Aluminium. Method of determination of calcium

GOST 13843−78 aluminum wire Rod. Specifications

GOST 23189−78 Aluminium primary. Spectral method for the determination of arsenic and lead

GOST 24231−80 non-ferrous metals and alloys. General requirements to selection and preparation of samples for chemical analysis

GOST 25086−87 non-ferrous metals and their alloys. General requirements for methods of analysis

EN 573−3-94* aluminum and aluminum alloys. Chemical composition and form of wrought products. Part 3. Chemical composition
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* International standard in VNIIKI of Gosstandart of Russia.

3 Classification and composition

3.1 depending on the chemical composition of primary aluminum consists of aluminum and high technical purity.

The chemical composition of the grades of aluminium, guaranteed by the manufacturer are shown in table 1.


Table 1 — Chemical composition

In aluminium technical purity of all brands used for the production of food tableware, arsenic should not be more than 0,015%.

In aluminum of high purity mass fraction of magnesium is not taken into account in the amount of impurities in the calculation of grade of aluminum.

With the agreement of the consumer determines the mass percent of sodium and lithium, and indicates the result with accuracy to the third decimal place in the document of quality for a specific product.

By agreement between the consumer and the manufacturer-defined list of contaminants, their maximum mass fraction, the calculation of the grade of aluminum and the content of the document as stipulated in the order.

3.2 Mass fraction of aluminium in high purity metal is determined by the difference between 100,00% and the sum of the mass fraction of the designated impurities, mass fraction of each of which is equal to or more than 0,0010% and calculated to the third decimal place before determining the sum.

Mass fraction of aluminium in the metal technical cleanliness is determined by the difference between 100,00% and the sum of the mass fraction of the designated impurities, mass fraction of each of which is equal to or more than 0,010% and is calculated to the second decimal place before determining the sum.

Record rules and rounding the result of the analysis established in 5.3.

An example of the calculation of the mass fraction of aluminium in aluminium technical purity is given in Appendix A.

Information about the compliance of brands of aluminium at the present standard brands established in the European standard EN 573−3 and registered by the American aluminium Association are given in Appendix B.

(Amendment).

3.3 Electrical resistance at 20 °C of wire, made of aluminum grades A7E and A5E and annealed at (350±20) °C for 3 h, should be no more than:

0,0277 Ohm·mm/m for aluminum brand A7E;

0,0280 Ohm·mm/m for aluminum brand A5E.

4 quality Control

Mass fraction of iron, silicon and copper in aluminum should be monitored in each cast or heat is provided with ready and to indicate in the document about quality.

The mass fraction of other monitored contaminants should be monitored in aluminum and high technical purity periodically, but not less than each 100-th melting or not less than one analysis of 2000 tons of aluminium, and specify in the document of quality by the consumer.

In aluminum brands A5E, A7E the amount of mass fraction of titanium, vanadium, chromium and manganese determined in each cast.

5 control Methods

5.1 Selection and preparation of samples for analysis according to GOST and GOST 24231 3221.

5.2 Chemical composition of aluminium is determined according to GOST 25086, GOST 12697.1−12697.14 GOST, GOST 11739.10, 3221 GOST, GOST 23189. Allowed to use other methods of equal accuracy standard.

When disagreement in the assessment of chemical composition of aluminum analysis performed according to GOST 25086, GOST 12697.1−12697.14 GOST, GOST 11739.10, 3221 GOST, GOST 23189.

5.3 Mass fractions of impurities obtained from the results of the analysis write percentage in accordance with table 2.


Table 2

Rounding rules results of the analysis:

a) if the digit after the last significant digit is less than 5, the last significant digit remains unchanged.

Example. The number 0,0518, rounded to the second decimal place, record 0,05; number 0,00244, rounded to the fourth decimal place, write 0,0024;

b) if the digit after the last significant digit is greater than 5 or equal to 5 and the next digit is any other than 0, the last significant figure increases by one.

Example. The number 0,0158, rounded to the second decimal place, record 0,02; number 0,05771, rounded to the third decimal place, write 0,058;

C) if two digits after the last significant digit is 5 and 0, then the last significant digit is incremented if it is odd or remain unchanged if it is even.

Example. The number 0,02509, rounded to the second decimal place, record 0,02; number 0,03504, rounded to the second decimal place, write 0,04; number 0,082508, rounded to the third decimal place, write 0,082, the number 0,05501, rounded to the second decimal place, write 0,06.

5.4 resistivity of annealed wire, made of aluminum grades A7E and A5E, determined according to GOST 7229 consumer.

6 Marking

Aluminium label by drawing on a pig, ingots, etc. indelibly the following markings:

By agreement with consumer it is allowed to affix in any other way. Marking must be indelible and must not be a source of contamination.

Annex a (mandatory). An example of the calculation of the mass fraction of aluminium in aluminium technical purity

APPENDIX A
(required)

Example 1. The chemical composition of the metal obtained from the results of the analysis:

Si — 0,1080; Fe — 0,148; Si — 0,0041; MP — 0,0030;

Mg — 0,0071; Zn — 0,0107; Ga — 0,0008; Ti — 0,0020;

Cr — 0,0017; Na — 0,0030; Ca — 0,007; Pb — 0,002.

Subject to the rules of entry and rounding 5.3 chemical composition record:

Si — 0,11; Fe — 0,15; Si — 0,004; MP — 0,003;

Mg — 0,007; Zn — 0,01; Ga — 0,0008; Ti — 0,002;

Cr — 0,002; Na — 0,003; Ca — 0,007; Pb — 0,002.

In accordance with the requirements of 3.2 in the calculation of the mass fraction of aluminium consider the following mass fraction of impurities:

Si — 0,11; Fe — 0,15; Zn — 0,01.

The sum of mass fractions of impurities 0.27%, respectively.

Mass fraction of aluminium 100,00−0,27=99,73%.

Taking into account the requirements established in table 1, this corresponds to metal aluminum brand A7.

Example 2. The chemical composition of the metal obtained from the results of the analysis:

Si — 0,174; Fe — 0,293; Si — 0,0023; MP — 0,0056;

Mg — 0,0113; Zn — 0,0082; Ti — 0,00951; Gr — 0,0027;

V — 0,0073; Na — 0,0024; Pb — 0,0058; Ni — 0,0030.

Subject to the rules of entry and rounding 5.3 chemical composition record:

Si 0,17; Fe — 0,29; Si — 0,002; MP — 0,006; Mg — 0,01;

Zn — 0,008; Ti — 0,01; Cr — 0,003; V — 0,007; Na — 0,002;

Pb — 0,006; Ni — 0,003.

In accordance with the requirements of 3.2 in the calculation of the mass fraction of aluminium consider the following mass fraction of impurities:

Si 0,17; Fe — 0,29; Mg — 0,01; Ti — 0,01.

The sum of mass fractions of impurities — 0,48%.

Mass fraction of aluminium 100,00−0,48=99,52%.

Taking into account the requirements established in table 1, the metal meets the aluminium brand A5.

Example 3. The chemical composition of the metal obtained from the results of the analysis:

Si — 0,086; Fe — 0,139; Si — 0,003; MP — 0,002; Mg — 0,019;

Zn — 0,0107; Ga — 0,0106; Ti — 0,005; Cr — 0,0020; V — 0,0061;

Na — 0,003; Ca — 0,007; Pb — 0,002.

Subject to the rules of entry and rounding 5.3 chemical composition record:

Si — 0,09; Fe — 0,14; Si — 0,003; MP — 0,002; Mg — 0,02;

Zn — 0,01; Ga — 0,01; Ti — 0,005; Cr — 0,002; V — 0,006;

Na — 0,003; Ca — 0,007; Pb — 0,002.

In accordance with the requirements of 3.2 in the calculation of the mass fraction of aluminium consider the following mass fraction of impurities:

Si — 0,09; Fe — 0,14; Mg — 0,02; Zn — 0,01; Ga — 0,01.

The sum of mass fractions of impurities 0.27%, respectively.

Mass fraction of aluminium 100,00−0,27=99,73%.

Taking into account the requirements established in table 1, the metal corresponds to the aluminum mark A7JE.

ANNEX B (reference). Compare brands of aluminium GOST 11069−2001 with brands established in the European standard and registered by the American aluminum Association

APPENDIX B
(reference)

Table B. 1 shows information about the compliance of brands of aluminium on the chemical composition of grades of aluminium established in the European standard EN 573−3-94 and registered by the American aluminum Association.


Table B. 1