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GOST 12338-81

STATE 12339-2016 GOST P 55433-2013 GOST P 55432-2013 GOST 4960-2009 GOST 9722-97 GOST 5494-95 GOST 19106-73 GOST 9453-75 GOST 20559-75 GOST 14086-68 GOST 9723-73 GOST 21125-75 GOST 5426-76 GOST 22025-76 GOST 13834-77 GOST 13833-77 GOST 9721-79 GOST 10285-81 GOST 12342-81 GOST 26719-85 GOST 13084-88 GOST 10096-76 GOST 2330-76 GOST 12343-79 GOST 4411-79 GOST 12338-81 GOST 26252-84 GOST 10284-84 GOST 26802-86 GOST 9849-86 GOST 3882-74 GOST 880-75 GOST 11378-75 GOST 4960-75 GOST 12601-76 GOST 12339-79 GOST 31290-2005 GOST 26630-85 GOST 26530-85 GOST 29278-92 GOST 25405-90 GOST 19046-80 GOST 25406-90 GOST 19078-80 GOST 24257-80 GOST 19065-80 GOST 24247-80 GOST 25412-90 GOST 25396-90 GOST 25400-90 GOST 25425-90 GOST 25410-82 GOST 25420-90 GOST 19074-80 GOST 19083-80 GOST 19048-80 GOST 25414-90 GOST 19062-80 GOST 25415-90 GOST 24253-80 GOST 24251-80 GOST 24249-80 GOST 24254-80 GOST 27302-87 GOST 25393-90 GOST 19067-80 GOST 25411-90 GOST 19068-80 GOST 25397-90 GOST 19059-80 GOST 19049-80 GOST 25398-90 GOST 19075-80 GOST 19061-80 GOST 20312-90 GOST 19051-80 GOST 25402-90 GOST 24252-80 GOST 25417-82 GOST 19043-80 GOST 20771-82 GOST 19081-80 GOST 19086-80 GOST 19056-80 GOST 19047-80 GOST 25421-90 GOST 25413-82 GOST 25418-82 GOST 27301-87 GOST 4872-75 GOST 19084-80 GOST 24255-80 GOST 19050-80 GOST 25401-90 GOST 19052-80 GOST 25426-90 GOST 25423-90 GOST 25399-90 GOST 19073-80 GOST 19057-80 GOST 2209-90 GOST 25403-82 GOST 19044-80 GOST 25408-90 GOST 25395-90 GOST 25409-90 GOST 25407-90 GOST 19071-80 GOST 28378-89 GOST 25419-90 GOST 19045-80 GOST 25003-81 GOST 25394-90 GOST 19077-80 GOST 19072-80 GOST 19080-80 GOST 17163-90 GOST 24250-80 GOST 25424-90 GOST 19063-80 GOST 19070-80 GOST 19076-80 GOST 24256-80 GOST 25422-90 GOST 25404-90 GOST 19064-80 GOST 24248-80 GOST 19069-80 GOST 19079-80 GOST 25416-90 GOST 19053-80 GOST 19042-80 GOST 19085-80

GOST 12338−81 Iridium powder. Specifications (with Amendments No. 1, 2)


GOST 12338−81

Group 56


STATE STANDARD OF THE USSR


IRIDIUM POWDER

Specifications

Iridium in powder. Specifications


GST 17 9460

Date of introduction 1983−01−01


INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR

DEVELOPERS

V. E. Avramov, PhD. tech. Sciences; M. A. Gavrilov; I.e., Konnova, L. A. Stepanova

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 27.11.81 N 5147

3. REPLACE GOST 12338−66

The frequency of inspection — 5 years

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

   
The designation of the reference document referenced
Item number
GOST 5556−81
5.4
GOST 6613−86
4.2
GOST 10354−82
5.4
GOST 12223.0−76
4.3
GOST 12223.1−76
4.3
GOST 12923−82
5.4

5. The expiration time limit is removed by the Resolution of Gosstandart from 07.09.92 N 1119

6. The re-release (March 1997) with Amendments No. 1, 2 approved in June 1987, September 1992 (IUS 9−87, 12−92)


This standard covers refined iridium powder, intended for the manufacture of alloys, industrial products and other purposes, and establishes requirements for affilirovannomu iridium powder, manufactured for the needs of the national economy and exports.

1. BRAND

1.1. Depending on the chemical composition of refined iridium powder is manufactured in the following grades: IA-0, IA-1, IA-2. A — refined.

Example of symbols of refined iridium powder:

IA-0 GOST 12338−81

2. TECHNICAL REQUIREMENTS

2.1. Refined iridium powder must be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

2.2. Chemical composition of iridium powder should conform to the standards specified in the table.

       
Item
Chemical composition, %
  Grade IA-0
Grade IA-1 Grade IA-2
  GST 17 9461 3000
GST 17 9461 1000 02 GST 17 9461 2000 09
Iridium, at least
99,98 99,95 99,90
Impurity, not more than:
     
platinum, palladium, iridium, ruthenium, osmium (amount)
0,010 0,020 0,045
Gold
0,002 0,002 0,002
Lead
0,004 0,005 0,010
Iron
0,005 0,010 0,010
Silicon
0,002 0,002 0,005
Barium
0,002 0,002 0,005
Magnesium
0,001 0,001 0,003
Aluminium
0,004 0,005 0,005
Silver
0,002 0,002 0,005
Nickel
0,001 0,002 0,005
Copper
0,003 0,005 0,010
Tin
0,002 0,002 0,002
Titan
0,002 0,005 0,010
The loss on ignition
0,010 0,010 0,010


Note. By agreement between the manufacturer and the customer allowed the expansion of the number of designated items not listed in this table, and the establishment of maximum contents were determined according to the method of the manufacturer.


(Changed edition, Rev. N 2).

2.3. Refined iridium is manufactured in powder form. The particle size of the powder should not exceed 0,8 mm.

Presence of powder particles larger than 0.8 mm and not more than 2% by weight of the party.

2.4. Powder of refined iridium should not contain extraneous mechanical impurities.

3. ACCEPTANCE RULES

3.1. Refined iridium powder take parties. Each batch should consist of a powder of the same brand, issued a document on quality and specification.

3.1.1. The document about quality should contain:

trademark or a trademark and the name of the manufacturer;

the name of the metal and its brand;

batch number;

mass fraction of iridium, %;

mass fraction determined by the impurity, %;

room specifications;

the date of issue;

the OTK stamp;

the designation of this standard.

The weight of the batch shall not exceed 250 kg.

(Changed edition, Rev. N 1, 2).

3.1.2. Specification must contain:

trademark or a trademark and the name of the manufacturer;

the name of the metal and its brand;

room specifications;

batch number;

the date of issue;

the number of seats;

rooms cans;

the mass of metal in each jar, g;

mass fraction of iridium, %;

mass fraction of each determined by the impurity, %;

total weight of batch, g;

the designation of this standard.

(Changed edition, Rev. N 1).

3.2. To check the quality of powder with the requirements of this standard from each lot of powder is sampled weight from 3 to 5% of the batch weight.

3.3. 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 batch of powder. The results of repeated tests apply to the entire party.

4. TEST METHODS

4.1. To determine the chemical composition and particle size of the powder of iridium sampled, which batch of powder was stirred six times on the ring and cone and reduce kvantovanie to the sample weight of 5% by weight of the party.

Allowed to acquire a sample by the method of intersection of the jet while stirring the batch of powder using a mechanical mixer.

4.2. The particle size determined by sieving the sample through a sieve with mesh No. 08 according to GOST 6613.

The sieve residue should be not more than 2%.

4.3. For analysis of the chemical composition of a sample crushed to particle size of not more than 0,315 mm, stirred and kvantovanie to reduce a mass of at least 50 g. the Sample is stored for at least three months.

Analysis of the chemical composition of refined iridium is carried out according to GOST 12223.0, GOST 12223.1.

4.4. Mechanical impurities in the sample is determined visually.

4.5. Weighing of refined iridium powder is carried out according to normative-technical documentation.

5. PACKING, MARKING, TRANSPORTATION AND STORAGE

5.1. Refined iridium powder is Packed in plastic jars and glass vials.

Net weight of powder in plastic banks should be not more than 7000 g, and the glass ampoules is not more than 50 g.

Cap and tube cans tied with string or fastened by other means and sealed with the seal of the shop of the manufacturer and the technical control Department of the manufacturer. Glass ampoules are sealed.

5.2. On each jar and label where you indicate:

the name of the metal and its brand;

room specifications;

batch number;

room banks;

mass fraction of perchloroethylene, %;

weight gross, net and tare, g;

year of issue;

the designation of this standard.

5.3. On each vial label where you indicate:

the name of the metal and its brand;

batch number;

the net mass, g;

mass fraction of perchloroethylene, %;

year of issue;

the designation of this standard.

5.2, 5.3. (Changed edition, Rev. N 1).

5.4. Each plastic jar of powder is placed in a tight cloth bag made of synthetic fiber or polyethylene film according to GOST 10354.

Glass vials with powder wrapping up soft padding; cotton wool GOST 5556 or aligning according to GOST 12923, or foam and packaged in rigid containers according to normative-technical documentation.

5.5. Bags with plastic banks and sealed in solid containers Packed in wooden boxes, pasted inside the foam or the soft cloth of synthetic fiber, or in containers according to normative-technical documentation.

Each box or container sealed with the seals of the shop of the manufacturer and the technical control Department of the manufacturer.

The seals on the boxes shall be hung through holes through a bolt after the nut is wrapped and tucked away in a recess on the lid of the box. Containers sealed cover locking slots.

5.6. On each box or container and label where you indicate:

room specifications;

the room and the location.

(Changed edition, Rev. N 1).

5.7. Storage and transportation of refined iridium powder is carried out in accordance with the requirements of the instructions of the Committee on precious metals and precious stones under the Ministry of economy and Finance.

(Changed edition, Rev. N 2).