GOST 6674.0-96

• gost-66740-96.pdf (113.91 KiB)
  ГОСТ 6674.0-96

GOST 6674.0−96 copper phosphorous Alloys. General requirements for methods of analysis

GOST 6674.0−96

Group B59

INTERSTATE STANDARD

COPPER PHOSPHOROUS ALLOYS

General requirements for methods of analysis

Copper-phosphorous alloys.
General requirements for methods of analysis

ISS 77.120.30
AXTU 1709

Date of introduction 2001−07−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 107; Donetsk state Institute of non-ferrous metals (Danism)

SUBMITTED to the State Committee of Ukraine for standardization, Metrology and certification

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 10 dated 3 October 1996)

The adoption voted:

3 Resolution of the State Committee of the Russian Federation for standardization and Metrology dated December 19, 2000 N 384-St inter-state standard GOST 6674.0−96 introduced directly as state standard of the Russian Federation from July 1, 2001

4 INTRODUCED FOR THE FIRST TIME

1 Scope

This standard establishes General requirements for methods of analysis of copper-phosphorous alloys.

2 Normative references

The present standard features references to the following standards:

GOST 4515−93 copper phosphorous Alloys. Specifications

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

GOST 28053−89 Shavings of non-ferrous metals and alloys. Methods of sampling, sample preparation and test methods

3 Requirements

3.1 General requirements for methods of analysis GOST 25086 when two parallel definitions.

3.2 Selection and preparation of samples for analysis is carried out according to GOST 4515, GOST 24231, 28053 GOST and other normative documents regulating requirements to the quality of the alloys.

3.3 the discrepancy between the results of two parallel definitions of element content in the sample should not exceed permissible value (at p = 0.95), regulated by the standard for methods for the determination of the content of this element.

3.4 analysis result should be the arithmetic mean of two parallel definitions, to meet the requirements of 3.3.

3.5. The discrepancy between the two results of the analysis of the same sample obtained at different times, different performers on the same methodology, should not exceed the permissible value (at p = 0.95), regulated by the standard for methods for the determination of the content of this element.

3.6 in the control of accuracy of analysis results using standard samples of composition of alloys played mass fraction of the element in the standard sample should not differ from the certified value more than 0.4 absolute acceptable standards for methods of analysis of the discrepancies in the results of primary and repeated analyses of the same samples obtained by the same method under different conditions (different time, different performers, using reagents of different parties).

3.7 in the control of accuracy of analysis results by the method of additions was found, the magnitude of the additive should not differ from the entered by more than 0.4, where and  — allowable absolute values of the differences of the results of the analysis of the sample with additive and without additive, respectively.

3.8 Error analysis result of the sample is less than 0.4 allowable absolute differences of the results of the analysis of samples (at a confidence level of 0.85).

3.9 Requirements for safety — according to the normative document, approved in a prescribed manner.