GOST 1762.0-71
GOST 1762.0−71 Silumin ingots. General requirements for methods of analysis (with Amendments No. 1, 2)
GOST 1762.0−71
Group B59
STATE STANDARD OF THE USSR
SILUMIN IN PIGS
General requirements for methods of analysis
Aluminium-silicon alloy ingots.
General requirements for methods of analysis
AXTU 1709
Valid from 01.01.73
to 01.07.95*
_______________________________
* Expiration removed
Protocol N 4−93 inter-state Council
for standardization, Metrology and certification.
(IUS N 4, 1994). — Note the CODE.
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR
THE DEVELOPERS OF THE STANDARD
A. A. Kostyukov, G. A. Romanov, N. M. Gertseva, A. P. Nechitailov, V. A. Lavrov
2. APPROVED AND promulgated by the Decree of the State Committee of standards of Ministerial Council of the USSR from
3. The frequency of inspection — 5 years
4. REPLACE GOST 1762−51 (in terms of sec. I)
5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
| The designation of the reference document referenced |
The number of the paragraph, subparagraph |
| GOST 8.505−84 | 6 |
| GOST 1521−76 | 1 |
| GOST 1770−74 | 8 |
| GOST 6563−75 | 8 |
| GOST 20292−74 | 8 |
| GOST 24104−80 | 7 |
| GOST 25086−87 | 2 |
| GOST 25336−82 | 10 |
6. Validity extended until
7. The re-release (may 1989) with Amendments No. 1, 2 approved in August 1984, March 1989 (IUS 12−84, 6−89)
1. This standard establishes General requirements for methods of analysis of silumin ingots according to GOST 1521−76.
2. General requirements for methods of analysis GOST 25086−87.
3. Mass fraction of components at the time of evaluation is determined by two parallel batches. At the same time spend two test experiment through all stages of the analysis, for inclusion in the result of the analysis corrections for contamination of reagents.
4. Permissible differences shown in the tables, calculated at a confidence level of 0.95.
5. The numerical values of the results of the analysis must contain the last significant digit in the same category, which is the last significant digit of the numerical values of the permissible differences of the results definitions.
6. Allowed to use other methods, certified according to GOST 8.505−84, if their metrological characteristics are not inferior to the characteristics of the methodologies included in the relevant standards on methods of determination.
7. For weighing test portions are used laboratory scales General purpose according to GOST 24104−80* 2nd class of accuracy type VLR-200 balance laboratory technical VLT-400 4-th accuracy class or similar.
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* On the territory of the Russian Federation GOST 24104−2001. — Note the CODE.
8. For the analysis of used laboratory and volumetric glassware not lower than 2nd accuracy class according to GOST 1770−74, GOST 20292−74, GOST 25336−82, GOST 6563−75 and furnace laboratory at the normative-technical documentation.
9. In the operation of electric heating equipment the temperature measurement error shall not exceed ±5 °C for 100−400 °C ±20 °C for 400 to 800 °C ±50 °C to 800−1000 °C, unless specifically authorized in the specific standard on the method of analysis.
10. When building a calibration curve each point is based on the arithmetic mean results of three parallel measurements.
1−10. (Changed edition, Rev. N 2).
11. After the expiration of the warranty term of the reagents allowed to check the suitability of reagents for the determination of the mass fraction of the components specified in the relevant standard, by analyzing the state standard sample of silumin.
(Added, Rev. N 2).
