GOST 1790-2016

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  ГОСТ 1790-2016

GOST 1790−2016 alloy Wire T chromel, alumel, Copel and Constantan for thermoelectrodes of thermoelectrical transducers. Specifications

GOST 1790−2016

Group В74

INTERSTATE STANDARD

WIRE ALLOYS CHROMEL T, ALUMEL, COPEL AND CONSTANTAN FOR THERMOELECTRODES OF THERMOELECTRICAL TRANSDUCERS

Specifications

T Wire of chromel, alumel, Copel PNB and constantan for thermoelectrodes of thermoelectrical transducers. Specifications

ISS 77.150.40

Date of introduction 2017−04−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−97 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. Rules of development, adoption, application, renewal and cancellation"

Data on standard

1 DEVELOPED by the Technical Committee for standardization TC 106 «Tsvetmetprokat», Scientific-research, project and design Institute for alloys and processing of nonferrous metals «Joint-stock company «Institute tsvetmetobrabotka» (JSC «Institute tsvetmetobrabotka»)

2 as AMENDED by the Federal Agency for technical regulation and Metrology

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol dated February 29, 2016 N 85-P)

The adoption voted:

4 by Order of the Federal Agency for technical regulation and Metrology dated 18 July 2016 N 851-St of the interstate standard GOST 1790−2016 introduced as a national standard of the Russian Federation from April 1, 2017

5 REPLACE GOST 1790−77

Information about the changes to this standard is published in the annual reference index «National standards», and the text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the 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 (www.gost.ru)

1 Scope

This standard applies to cold-drawn wire round alloy T chromel, alumel, Copel and Constantan (hereinafter, wire), used for the manufacture of thermoelectrodes of thermoelectrical transducers.

2 Normative references

This standard uses the regulatory references to the following international standards:

GOST 8.338−2002 State system for ensuring the uniformity of measurements. The thermoelectric converters. Verification procedure

GOST R 8.585−2001 State system for ensuring the uniformity of measurements. Thermocouple. Nominal static characteristics of conversion

GOST 492−2006 Nickel, Nickel alloys, and copper-Nickel, processed by pressure. Brand

GOST 982−80 Oil transformer. Specifications

GOST 1770−74 (ISO 1042−83, ISO 4788−80) Glassware volumetric laboratory glass. Cylinders, beakers, flasks, test tubes. General specifications

GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications

The Wire GOST 3282−74 General purpose low carbon steel. Specifications

GOST 3560−73 package steel Strip. Specifications

GOST 4381−87 Micrometers lever. General specifications

GOST 6323−79 Wire with polyvinylchloride isolation for electric installations. Specifications

GOST 6507−90 Micrometers. Specifications

GOST 6689.1−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of copper

GOST 6689.2−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of Nickel

GOST 6689.3−92 Nickel, alloys Nickel and copper-Nickel. Method for the determination of Nickel and cobalt

GOST 6689.4−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of zinc

GOST 6689.5−92 Nickel, alloys Nickel and copper-Nickel. Methods of iron determination

GOST 6689.6−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of manganese

GOST 6689.7−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of silicon

GOST 6689.8−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of aluminium

GOST 6689.9−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of cobalt

GOST 6689.10−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of carbon

GOST 6689.11−92 Nickel, alloys Nickel and copper-Nickel. Method for the determination of tungsten

GOST 6689.12−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of magnesium

GOST 6689.13−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of arsenic

GOST 6689.14−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of chromium

GOST 6689.15−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of antimony

GOST 6689.16−92 Nickel, alloys Nickel and copper-Nickel. Methods for the determination of zinc, cadmium, lead, bismuth and tin

GOST 6689.17−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of bismuth

GOST 6689.18−92 Nickel, alloys Nickel and copper-Nickel. Methods of determining sulphur

GOST 6689.19−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of phosphorus

GOST 6689.20−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of lead

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

GOST 8273−75 wrapping Paper. Specifications

GOST 8828−89 base Paper and paper double-layer waterproof packaging. Specifications

GOST 9078−84 flat Pallets. General specifications

GOST 9245−79 Potentiometers DC measurement. General specifications

GOST 9347−74 Cardboard gasket and gasket from him. Specifications

GOST 9557−87 flat wooden Pallet size of 8001200 mm. Technical specifications

GOST 9569−2006 waxed Paper. Specifications

GOST 10446−80 (ISO 6892−84) Wire. Test method tensile

GOST 14192−96 Marking of cargo

GOST 15846−2002 Products that are sent to the far North regions and equated areas. Packing, marking, transportation and storage

GOST 17675−87 Tubes electrical insulating flexible. General specifications

GOST 18242−72 Statistical acceptance inspection by alternative feature. Plans control*
_______________
* In the Russian Federation GOST R ISO 2859−1-2007 «Statistical methods. Procedure sampling on alternative grounds. Part 1. Sampling plans consistent parties on the basis of an acceptable level of quality."


GOST 18321−73 Statistical quality control. Methods of random selection of piece products

GOST 20435−75 the universal metal closed Container of nominal gross mass 3,0 t specifications

GOST 21007−2014 platinum Wire for resistance thermometers. Specifications

GOST 21140−88 Tara. System sizes

GOST 21650−76 means of fastening of package cargoes in transport packages. General requirements

GOST 22225−76 universal Containers with a gross weight 0,625 and 1,25 t. specifications

GOST 22666−77 copper Wire and Kopel alloy for low-temperature thermoelectric converters. Specifications

GOST 24047−80 Semi-finished products from nonferrous metals and their alloys. Sampling for tensile test

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

GOST 24597−81 the packaged goods. Basic parameters and dimensions

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

GOST 26663−85 transport Packs. Formation with the use of packaging. General technical requirements

GOST 32597−2013 Copper and copper alloys. Types of defects of billets and semi-finished

ST SEV 543−77 Number. Record rules and rounding

Note — When using this standard appropriate to test the effect of reference standards for the sign «National standards» drawn up as of January 1 of the current year and related information signs, 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 Terms and definitions

This standard applies the terminology according to GOST 32597, as well as the following terms with respective definitions:

3.1 wire: Prefabricated with a cross section of constant size, rolled into the Bay or wound into a coil, manufactured by rolling, pressing or drawing.

3.2 Bay: Cut product wound into a series of continuous turns right not mixed up in rows, with no sharp bends.

4 Assortment

4.1 nominal diameter of round wire and limit deviation shall be as specified in table 1.


Table 1 — nominal diameters and tolerances for diameter

4.2 Wire is supplied in coils, Hanks or on reels.

4.3 the legend of the wire are placed according to the following scheme:

The sign «X» indicates data that has more than one value.

Use the following abbreviations:

Symbols are examples of wire:

Wire cold-drawn, round section, soft, with a diameter of 0.30 mm, in coils alloy chromel T brand NH9,5 and alumel brand Nmcak2−2-1, picked a couple, for low temperatures:

Wire DKRM 0,30 CT NH9,5 — Nmcak2−2-1 3 GOST 1790−2016

Wire cold-drawn, round section, soft, with a diameter of 5.00 mm, in coils, of alloy chromel T brand NH9,5 and Copel brand Mnmc43−0,5, picked a couple, for high temperatures of the 1st class of tolerances:

Wire DKRM of 5.00 BT NH9,5 — Mnmc43−0,5 1 GOST 1790−2016

Wire cold-drawn, round section, soft, with a diameter of 0.30 mm, in coils, of alloy chromel T brand NH9,5 and Constantan brand Mnmc40−1,5, picked a couple, for high temperatures 2-class tolerances:

Wire DKRM 0,30 CT NH9,5 — Mnmc40−1,5 2 GOST 1790−2016

5 Technical requirements

5.1 Wire produced in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

5.2 Wire made from alloys chromel T brand NH9,5, alumel brand Nmcak2−2-1 and the Copel brand Mnmc43−0.5 and Constantan brand Mnmc40−1,5 with the chemical composition according to GOST 492.

Note — it is allowed in the alloy chromel T increase in mg content up to 0.2% if the wire meets all other requirements of this standard.

5.3 Wire alloy T chromel, alumel, Copel and Constantan for thermocouples are manufactured with nominal static characteristic of chromel — alumel /HA (K), chromel — Copel /XK (L)/, chromel — Constantan /HCN (E)/ in accordance with the requirements given in table 2.


Table 2 — nominal static characteristic of conversion

5.4 Thermoelectric power (T. E. D.) developed by the pair, compiled from wire chromel and alumel /HA (K)/, of the wire of the alloy chromel and Copel /XK (L)/ and alloy wire chromel and Constantan /HCN (E)/ must correspond to the nominal values with the requirements of GOST R 8.585. The lifespan of the wire (in pairs) depending on its diameter and operating temperatures given in Appendix B (table B. 1).

5.5, the maximum deviations of T. E. D. S. wire, packaged in pairs in the party, must comply with the values given in table 3.


Table 3 — Limit deviations of T. E. D. S., mV (±), picked pairs of wire