GOST R 55375-2012

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  ГОСТ Р 55375-2012

GOST R 55375−2012 primary Aluminum and alloys on its basis. Brand

GOST R 55375−2012

Group W51

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

PRIMARY ALUMINUM AND ALLOYS ON ITS BASIS

Brand

Primary aluminum and alloys based on it. Grades

OKS 77.120.10
GST 17 1210

Date of introduction 2013−08−01

Preface

The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 N 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004 «Standardization in the Russian Federation. The main provisions"

Data on standard

1 was DEVELOPED by limited liability company „UNA“ („UNA“)

2 SUBMITTED by the Technical Committee for standardization TC 99 „Aluminium"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated December 27, 2012 No. 2067-St

4 INTRODUCED FOR THE FIRST TIME


Information about the changes to this standard is published in the annually issued reference index „National standards“, and the text changes and amendments — in monthly indexes published information „National standards“. In case of revision (replacement) or cancellation of this standard a notification will be published in a monthly information index „National standards“. Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet

Introduction

Currently in the Russian Federation a significant portion of consumers uses the European system of codification of the grades of primary aluminum and alloys on its basis. The goal of the development of this standard is the convergence of the European and Russian systems of codification of the grades of primary aluminum and alloys on its basis. For this purpose the standard presents reference Annex A-V.

1 Scope

This standard establishes requirements for the grades of primary aluminum produced by electrolysis from bauxite and nepheline ore raw materials and other raw materials, and alloys based on it, produced in liquid form, in the form of pigs, ingots, wire rod, strips, etc.

2 Normative references

This standard uses the regulatory references to the following standards:

GOST R 8.563−2009 State system for ensuring the uniformity of measurements. Techniques (methods) of measurements

GOST R 50965−96 Aluminum and aluminum alloys. Method for the determination of hydrogen in solid metal

GOST 1583−93 Alloys aluminum casting. Specifications

GOST 1762.0−71 Silumin ingots. General requirements for methods of analysis

GOST 1762.1−71 Silumin ingots. Methods for determination of silicon

GOST 1762.2−71 Silumin ingots. Methods of iron determination

GOST 1762.3−71 Silumin ingots. Methods for determination of calcium

GOST 1762.4−71 Silumin ingots. Methods for determination of titanium

GOST 1762.5−71 Silumin ingots. Methods for determination of manganese

GOST 1762.6−71 Silumin ingots. Methods for determination of copper

GOST 1762.7−71 Silumin ingots. Methods for determination of zinc

GOST 3221−85 Aluminium primary. Methods of spectral analysis

GOST 4784−97 Aluminum and aluminum deformable alloys. Brand

GOST 7727−81 aluminum-based Alloys. Methods of spectral analysis

GOST 11069−2001 primary Aluminium. Brand

GOST 11739.1−90 Alloys aluminium cast and wrought. Methods for determination of aluminium oxide

GOST 11739.2−90 Alloys aluminium cast and wrought. Methods of boron determination

GOST 11739.3−99 Alloys aluminum casting and wrought. Methods for determination of beryllium

GOST 11739.4−90 Alloys aluminium cast and wrought. Methods for determination of bismuth

GOST 11739.5−90 Alloys aluminium cast and wrought. Methods for determination of vanadium

GOST 11739.6−99 Alloys aluminum casting and wrought. Methods of iron determination

GOST 11739.7−99 Alloys aluminum casting and wrought. Methods for determination of silicon

GOST 11739.8−90 Alloys aluminium cast and wrought. Method of determining potassium

GOST 11739.9−90 Alloys aluminium cast and wrought. Methods for determination of cadmium

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

GOST 11739.11−98 Alloys, aluminum casting and wrought. Methods for determination of magnesium

GOST 11739.12−98 Alloys, aluminum casting and wrought. Methods for determination of manganese

GOST 11739.13−98 Alloys, aluminum casting and wrought. Methods for determination of copper

GOST 11739.14−99 Alloys aluminum casting and wrought. Methods for determination of arsenic

GOST 11739.15−99 Alloys aluminum casting and wrought. Methods for determination of sodium

GOST 11739.16−90 Alloys aluminium cast and wrought. Methods for determination of Nickel

GOST 11739.17−90 Alloys aluminium cast and wrought. Methods for determination of tin

GOST 11739.18−90 Alloys aluminium cast and wrought. Methods for determination of lead

GOST 11739.19−90 Alloys aluminium cast and wrought. Methods for determination of antimony

GOST 11739.20−99 Alloys aluminum casting and wrought. Methods for determination of titanium

GOST 11739.21−90 Alloys aluminium cast and wrought. Methods for determination of chromium

GOST 11739.22−90 Alloys aluminium cast and wrought. Methods for the determination of rare earth elements and yttrium

GOST 11739.23−99 Alloys aluminum casting and wrought. Methods for determination of zirconium

GOST 11739.24−98 Alloys, aluminum casting and wrought. Methods for determination of zinc

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 21132.0−75 aluminum and aluminum alloys. Method for the determination of hydrogen content in liquid metal

GOST 21132.1−98 Aluminium and aluminium alloys. Methods for determination of hydrogen in solid metal-vacuum-heating

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 25086−2011 non-ferrous metals and their alloys. General requirements for methods of analysis

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or published annually by the information sign „National standards“ published as on January 1 of the current year and related information published monthly indexes published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Classification

Depending on the chemical composition of primary aluminum is divided into aluminum and high technical purity.

Primary aluminum alloys — alloys produced on the basis of primary aluminum.

Primary aluminum alloys are divided into alloys aluminium wrought and aluminium casting.

4 Technical requirements

4.1 the Chemical composition of the grades of primary aluminum must comply with the specified in table 1.


Table 1 — Primary aluminium

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 in the calculation of the grade of aluminium mass fraction of magnesium in the amount of impurities does not take into account.

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 products of a specific kind.

In aluminum brand A5E designed for the manufacture of wire rod brand ACLP-FRI GOST 13843, is allowed the mass fraction of silicon not more than 0.12%.

In aluminum brand A5E when the mass fraction of impurities of titanium, vanadium, manganese and chromium, not more than 0,010% of the allowed mass fraction of silicon up to 0.15%.

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.

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 remaining of the designated impurities should be controlled 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 as guaranteed values, unless otherwise set by the user.

Other requirements for determination of mass fraction of element and impurities, and the rules of recording the results of the analysis should be in accordance with GOST 11069.

4.2 Chemical composition of grades of cast aluminum alloys shall be those specified in table 2.


Table 2 — Aluminium cast alloys (ingots)

It is allowed to determine the mass percent of impurities in the alloys in the manufacture of castings from metal stock known chemical composition (except for Fe).

The application of alloy grades AK12 (AL2) and Amg5mc (АЛ28) for parts operating in sea water, the mass fraction of copper should not exceed: grade AK12 (AL2) and 0.30% in grade Amg5mc (АЛ28) is 0.1%.

When applying the alloy for casting under pressure is allowed in the alloy of the brand AK7C9 (АЛ11) lack of magnesium in the alloy brand Amg11 (АЛ22) allowed the magnesium content of 8.0%-13,0%, silicon 0.8% of the 1.6 million%, manganese up to 0.5% and the absence of titanium.

The grades AK5M7 (А5М7), Amg5k (АЛ13), Amg10 (АЛ27), Amg10ch (АЛ27−1) are not recommended for new designs.

In the alloy АК8МЗч (ВАЛ8) allowed the absence of boron, provided that the level of mechanical characteristics specified in this standard. In the manufacture of parts made of alloy АК8МЗч (ВАЛ8) by the method of liquid stamping mass fraction of iron should be not more than 0.4%.

When injection molding of the alloy AK8 (АЛ34) allowed the lower limit of the mass fraction of beryllium to 0.06%, increase allowable mass fraction of iron up to 1.0% at the total mass fraction of impurities is not more than 1.2% and the absence of titanium.

For modifying structure in alloys Ak9ch (АЛ4), Ak9pch (АЛ4−1), Ak7ch (АЛ9), Ak7pch (АЛ9−1) allowed the introduction of strontium to 0.08%.

The impurities, denoted by a dash, into account in the total amount of impurities, the content of each element does not exceed 0,020%.

In the order, design documentation, marking of castings are allowed to specify the brand of the alloy without additional designation marks in brackets or mark indicated in the brackets.

By agreement with consumer it is permitted to produce ingots, whose composition by weight fractions the individual elements (major components and impurities) different from the one in table 2.

When applying the alloy for casting under pressure is allowed in the alloy Amg7 (АЛ29) the impurity content of the beryllium to 0.03% silicon up to 1.5%.

The alloy grade Amg11 (АЛ22) allowed no titanium.

By agreement between manufacturer and consumer in the silumin brand Ak12zh (POWER-2) allowed the iron content up to 0.9%, manganese up to 0.8%, titanium up to 0.25%.

For making food purposes used alloy AK7, AK5M2, AK9, AK12. The use of alloys of other brands for the manufacture of products and equipment intended for contact with food products and environments in each case should be permitted by the health authorities.

In aluminium alloys intended for the manufacture of products food products, the mass fraction of lead should not be more than 0.15%, arsenic — not more than 0,015%, zinc — not more than 0.3%, beryllium is not more than 0.0005%.

4.3 Chemical composition of the grades of wrought aluminium alloys shall conform to requirements of GOST 4784.

4.4 By agreement between the consumer and the manufacturer-defined list of contaminants, their maximum mass fractions, the procedure for calculating grades of aluminium and alloys on its basis, as well as the content of the document as set in order by documenting the technical specifications.

Primary aluminum and alloys on its basis shall be made in accordance with the requirements of this standard technological instruction, duly approved.

4.5 Additional information on the compliance of the grades of primary aluminum and alloys on its basis for the present standard, GOST 4784, GOST 1583, and according to European standards [1] and [8] are given in Appendix B.

5 control Methods

5.1 Primary aluminium

5.1.1 Sampling and preparing samples for analysis according to GOST and GOST 24231 3221.

5.1.2 General requirements for methods of analysis GOST 25086.

5.1.3 Chemical composition of aluminium is determined according to GOST 12697.1−12697.14 GOST, GOST 11739.10, 3221 GOST, GOST 23189. Allowed to use other measurement techniques, certified in accordance with GOST R 8.563, not inferior to the accuracy standard.

When disagreement in the assessment of chemical composition of aluminum analysis performed according to GOST 12697.1−12697.14 GOST, GOST 11739.10, 3221 GOST, GOST 23189. Allowed the use of standardized measurement techniques with a greater range of element definitions.

5.2 Aluminum cast alloys

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

5.2.2 General requirements for methods of analysis GOST and GOST 25086 1762.0.

5.2.3 the Chemical composition of alloys determined according to GOST 1762.1-GOST 1762.7 (for silumin ingots), GOST 11739.1−11739.24 GOST, GOST 7727. Allowed to use other measurement techniques, certified in accordance with GOST R 8.563 equal accuracy standard.

The differences in the evaluation of the chemical composition analysis is carried out according to GOST 11739.1−11739.24 GOST, GOST 1762.0-GOST 1762.7 (for silumin ingots). Allowed the use of optical emission spectrometers, as well as the use of standardized measurement techniques with a greater range of element definitions.

The hydrogen content in the alloys is determined according to GOST 21132.0, 21132.1 GOST, GOST R 50965.

Determination of gas porosity according to GOST 1583.

5.3 Wrought aluminum alloys

Methods of control wrought aluminium alloys shall be as specified in 5.2.3 of this standard.

Annex a (informative). The basic rules of designation of wrought aluminum alloys in accordance with the European coding system

Appendix A
(reference)

A. 1 European coding system

This Annex describes the European coding system for wrought aluminium and aluminium alloys, based on the international designation system. Matches [2]. Applies to wrought semi-finished products and ingots, intended for the treatment of pressure.

A. 2 Marking consistently is made up of:

prefix EN, followed by a space;

— letters And denoting aluminium;

the letter W, designating wrought semi-finished products;

— a hyphen;

international symbol consisting of four digits representing the chemical composition and, if applicable, letters indicating a national variation; this designation was adopted by the aluminum Association by means of the procedure of international registration.

Examples

1 aluminum Alloy, wrought semi-finished product, grade 5052

EN AW-5052

2 aluminum Alloy, wrought semifinished product, brand 5154, national variations And

EN AW-5154A

A. 3 four-digit system

A. 3. Group 1 alloys

The first four characters in the designation indicates the alloy group as follows:

— aluminium of 99.00% or more — 1ххх (series 1 000);

aluminum alloys grouped by major alloying elements:

— copper 2xxx series (2 000),

— manganese 3ххх (series 3 000),

— silicon 4ххх (series 4 000),

— magnesium 5ххх (series 5 000),

— magnesium and silicon 6ххх (series 6 000),

zinc 7ххх (series 7 000),

— other elements 8xxx series (8 000),

— unused 9ххх series (series 9 000).

A. 3. Group 2 1ххх

Rated designation shall relate to group 1ххх, if the minimum aluminum content is specified as of 99.00% or more. In the group 1ххх the last two of four digits in the designation indicate the minimum aluminum percentage. These signs coincide with two digits after the decimal point in the minimum percentage of the aluminum content, expressed to the nearest 0.01%.

The second sign in the alloy designation indicates alloy modification on the limits of the contents of impurities and alloying elements. If the second sign in the designation is zero, it indicates unalloyed aluminium having natural limits of the contents of impurities.

The numbers from 1 to 9 which are assigned consecutively as needed, indicate special control of one or more elements of impurities or alloying elements.

A. 3.3 Group 2xxx 8xxx on

Designation of alloy groups 2xxx 8xxx is determined by the alloying element (for alloys 6ххх), in which the average percentage in the alloy is highest. If the highest average percentage is the same for several alloying elements, choose a group sequence: copper, manganese, silicon, magnesium, magnesium silicide, zinc, and other.

The second sign in the alloy designation indicates the original alloy and modification of the alloy. If the second digit in the designation is zero, it is the original alloy; the numbers 1 through 9, inclusive, are assigned sequentially to indicate the modification of the alloy.

In alloy groups 2xxx 8xxx with for the last two digits identify the different aluminium alloys in the group.

Annex B (reference). The basic rules of designation of cast aluminum alloys in accordance with the European coding system

Appendix B
(reference)

B. 1 Digital system of a designation

This Appendix describes the European digital designation system for aluminium alloys and master alloys. Applies to ingots for remelting and to castings for all applications.

Digital notation follows [3]. Marking consistently consists of:

prefix EN, followed by a space;

— letters And representing the aluminium;

the letters indicating the shape of the semi-finished product:

In alloyed aluminum ingots for remelting;

From the casting;

— M alloys;

— hyphen;

— five digits, showing the limits of the contents of elements of chemical composition.

Examples

1 aluminum Alloy, foundry, form of mix — doped ingot for remelting, brand 44000

EN AB-44000

2 aluminum Alloy, foundry, form of semi — ligature, mark 91400

EN AM-91400

The letters of the prefix alloys for use in aviation and Astronautics different from above and specified in [4].

The chemical composition of internationally registered wrought aluminium and wrought aluminium alloys not listed in this standard can be found in [5].

B. 2 Five-digit designation system

B. 2.1 Casting and ingots of aluminum alloys

For the individual alloy ingots and castings must have the same numerical designation.

The first of the five figures in the designation should indicate the main alloying elements, as shown below:

— copper: 2ХХХХ; silicon: 4ХХХХ; magnesium: 5ХХХХ; zinc: 7ХХХХ.

The second of the five figures in the designation must indicate the alloy group, as shown below:

21ХХХ: ; 41ХХХ: ; 42ХХХ: ; 43ХХХ: ; 44ХХХ: ; 45ХХХ: ; 46ХХХ: ; 47ХХХ: ; 48ХХХ: ; 51XXX: ; 71XXX: .

The third digit is set arbitrarily.

The fourth digit must be 0.

The fifth digit must be 0, except for alloys for aviation and space.

B. 2.2 Alloys

The first of the five digits in the designation to be 9.

The second and third digits must represent the atomic number of the main element.

Example 1 — 05 for boron;

Example 2 — 14 for silicon;

Example 3 — 29 for copper.

The last two digits should represent the two-digit chronological number of this:

an even digit is reserved for alloys with low levels of impurities;

— odd digit is reserved for alloys with a high level of impurities.

B. 3 designation System based on chemical symbols

This Appendix describes an alternative system of designation based on chemical symbols.

System designations based on chemical symbols corresponds to [6].

For non-alloyed grades designation corresponds to [7].

B. 3.1 the basis of the codification

The designation of aluminium alloys and master alloys based on their chemical symbols, which usually is followed by a value indicating the nominal concentrations of the alloying element.

All tags that correspond to the present codification, preferably, are indicated in square brackets and placed after the five-digit designation. If used only on the basis of chemical characters, it must have the prefix EN, which is followed by a space, followed by the letter indicating the shape of the semi-finished product.

The letters (b, C, or M) must be separated by subsequent designation by a hyphen.

Example — aluminum Alloy, foundry, form of mix — doped ingot for remelting, the main alloying element is silicon, the group of alloy with a nominal content of alloying element 3%

EN AV 45400 [] or EN

Used in this standard notation and limits of chemical composition specified in [8], [9], [10].

B. 3.2 Rules code designation aluminum alloys and ligatures

The alloy is denoted by the symbol , followed by the characters of the main element or elements. After these characters are followed by numbers indicating the percentage by mass of the elements under consideration, in accordance with the rules specified in B. 3.3. The symbol is separated from the rest of the symbols with a space.

When the designation takes several alloying elements, they must be arranged in descending order of rated content.

Examples

1 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by weight of silicon 5%, copper 3%

EN

If the contents of alloying elements are the same, they are arranged in alphabetical order of symbols.

2 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by mass of silicon 12%, copper, magnesium and 1% Nickel

EN

Among the chemical symbols of alloying elements is limited to four characters.

B. 3.3 Rules distinguish between two alloys of similar composition

B. 3.3.1 General provisions

We use the most simple designation.

In the case of alloys of similar composition is used an additional symbol to differentiate between them, in order of decreasing significance.

B. 3.3.2 the Distinction between the nominal content

The alloying elements should be distinguished according to nominal composition (mid-range), rounded to the nearest integer or, if necessary, to 0.5 or to content less than 1%, to 0.1.

Examples

1 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by weight of silicon and 7%, magnesium 0.3% of

EN

2 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by weight of silicon and 7%, magnesium 0,6%

EN

B. 3.3.3 the Distinction on the basic impurities

Designation main impurity (impurities) is added in parentheses.

Examples

1 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by mass of silicon 10%, copper 1%, the main impurity copper

EN

2 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by mass of silicon 9% and copper 3%, the main impurities are iron and zinc

EN

B. 3.3.4 Discernment index

If the above is not enough to distinguish between multiple alloys, use the index: (a), (b), ©… in accordance with the date of registration of the lowercase Latin letters in brackets so they cannot be confused with the chemical symbols.

Examples

1 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by mass of silicon 12% of the alloys in this group first

EN

2 aluminum Alloy, foundry, form of mix — doped ingot for remelting, the percentage by mass of silicon 12% of the alloys in this group the second

EN

B. 3.4 Special application for ligatures

At the end of the chemical symbol in accordance with the level of impurities, i.e. use the index:

(A) for alloys with low levels of impurities;

(B) for alloys with a high level of impurities.

B. 4 status Designations heat treatment

To indicate the state of heat treatment of cast alloys use the following abbreviations:

F — casting;

On — annealing;

T1 — controlled cooling (annealing) of the casting and natural aging.

T4 — solution heat treated hardened and the natural aging necessary;

T5 — controlled cooling (annealing) of the casting, artificial aging or perestiani (stabilizing aging);

T6 — heat treatment hardened solution and full artificial aging;

T64 — heat treatment of hardened mortar and incomplete artificial aging;

T7 — solution heat treated hardened and artificial perestiani (stabilizing aging).

B. 5 Denote molding processes

To refer to a variety of casting processes uses the following abbreviations:

S — sand casting;

K — chill casting;

D — die casting;

L — precision casting (investment casting).

Annex b (informative). The tables correlate the chemical composition of the grades of primary aluminum and alloys on its basis for the present standard, GOST 4784, GOST 1583, and according to European standards

The App
(reference)

Table V. 1 — correlation of the chemical composition of the grades of primary aluminum under this standard and [1]

Table B. 2 — Mapping of the chemical composition of wrought aluminum grades under this standard and [1].

Table B. 3 — Mapping of chemical composition of aluminum wrought alloys: aluminium — copper — magnesium and aluminum — copper — manganese according to GOST 4784 and [1]

Table B. 4 — Mapping of chemical composition of aluminum wrought alloys aluminum — manganese according to GOST 4784 and [1]

Table B. 5 — Mapping of chemical composition of aluminum wrought alloys aluminum — magnesium according to GOST 4784 and [1]

Table V. 6 — the Correlation of chemical composition of aluminum wrought alloys aluminum — magnesium — silicon according to GOST 4784 and [1]

Table V. 7 — the Correlation of chemical composition of aluminum wrought alloys: aluminum — zinc — magnesium according to GOST 4784 and [1]

Table B. 8 — Mapping of chemical composition of aluminum casting alloys: aluminum — silicon — magnesium GOST 1583 [8]

Bibliography