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GOST 492-2006

GOST R ISO 7530-1-2016 STATE STANDARD P ISO 11400-2016 GOST R ISO 7530-3-2016 GOST R ISO 7530-2-2016 STATE STANDARD P ISO 7523-2016 GOST R ISO 6351-2015 GOST R ISO 22725-2014 GOST R ISO 22033-2014 GOST P 55558-2013 GOST 849-2008 GOST 849-97 GOST 6012-78 GOST 6012-98 GOST 22598-93 GOST 17711-80 GOST 13047.9-2014 GOST 13047.4-2014 GOST 13047.3-2014 GOST 13047.2-2014 GOST 13047.18-2014 GOST 13047.1-2014 GOST 13047.17-2014 GOST 13047.16-2014 GOST 13047.15-2014 GOST 13047.14-2014 GOST 13047.13-2014 GOST 13047.12-2014 GOST 13047.11-2014 GOST 13047.10-2014 GOST 13047.8-2014 GOST 13047.7-2014 GOST 13047.6-2014 GOST 13047.5-2014 GOST 6689.16-92 GOST 6689.2-92 GOST 6689.19-92 GOST 6689.24-92 GOST 6689.3-92 GOST 492-73 GOST 492-2006 GOST 24018.7-91 GOST 6689.17-92 GOST 6689.14-92 GOST 6689.4-92 GOST 6689.18-92 GOST 19241-80 GOST 24018.8-91 GOST 6689.21-92 GOST 6689.12-92 GOST 6689.13-92 GOST 29095-91 GOST 6689.11-92 GOST 6689.15-92 GOST 6689.9-92 GOST 6689.22-92 GOST 6689.8-92 GOST 6689.1-92 GOST 6689.20-92 GOST 6689.7-92 GOST 6689.5-92 GOST 6689.10-92 GOST 6689.6-92 GOST P 51013-97 GOST 24018.3-80 GOST 24018.5-80 GOST 24018.2-80 GOST 24018.6-80 GOST 24018.1-80 GOST 24018.4-80 GOST 24018.0-90

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


GOST 492−2006

Group W51

INTERSTATE STANDARD

NICKEL, ALLOYS NICKEL AND COPPER-NICKEL, PROCESSED BY PRESSURE

Brand

Nickel, nickel and copper-nickel alloys treated by pressure. Grades


ISS 77.120.40
GST 17 3230
17 3270

Date of introduction 2008−01−01

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. The procedure of development, adoption, application, renewal and cancellation"
__________________
* May 1, 2010 put into effect GOST 1.2−2009.


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 SUBMITTED by the Technical Secretariat of the Interstate Council for standardization, Metrology and certification

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 29 of June 24, 2006)

The standard was accepted by voting:

     
Short name of the country on MK (ISO 3166) 004−97
 Country code
by MK (ISO 3166) 004−97
 Abbreviated name of the national authority for standardization
Azerbaijan
 AZ
 Azstandart
Armenia AM Intergeneratsiya
Belarus
 BY
 Gosstandart Of The Republic Of Belarus
Kazakhstan
 KZ
 Gosstandart Of The Republic Of Kazakhstan
Kyrgyzstan
 KG
 Kyrgyzstandard
Moldova
 MD
 Moldova-Standard
Russian Federation
 EN
 Federal Agency on technical regulation and Metrology
Tajikistan
 TJ
 Tajikstandart
Uzbekistan
 UZ
 Uzstandard
Ukraine
 UA
 Derzhspozhyvstandart Of Ukraine

4 by Order of the Federal Agency for technical regulation and Metrology dated December 27, 2006 N 498-St interstate standard GOST 492−2006 introduced as a national standard of the Russian Federation from January 1, 2008

5 REPLACE GOST 492−73

6 REISSUE. June 2011


Information about introduction in action (termination) of this standard is published in the index «National standards».

Information about the amendments to this standard is published in the index «National standards», and the text changes — in the information sign «National standards». In case of revision or cancellation of this standard the appropriate information will be published in the information index «National standards»

1 Scope

This standard covers Nickel, Nickel and copper-Nickel alloys, pressure treated, intended for the manufacture of semi-finished products used in various industries.

In the designation of Nickel, Nickel and copper-Nickel alloys should indicate the brand in accordance with this standard.

2 Normative references

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

GOST 6012−98 Nickel. Methods of chemical-atomic-emission spectral analysis

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. The method of determining the amount 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 6689.21−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of titanium

GOST 6689.22−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of tin

GOST 6689.24−92 Nickel, alloys Nickel and copper-Nickel. Method of determination of calcium

GOST 22598−93 low-alloy Nickel and Nickel alloys. Method of determining oxygen

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 document is replaced (modified), then the use of this standard should be guided by the replaced (modified) document. If the reference document is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Stamps

3.1 Brand, chemical composition and the approximate assignment of Nickel, Nickel and copper-Nickel alloys shall be as given in tables 1−3.


Table 1 — Chemical composition of Nickel

                                             
The name of the metal Mark Limit Mass fraction, %
 Of the product Approximate appointment
      Item
 The amount of the prima
this		    
      Ni+Co Nickel + cobalt
 As arsenic
 Bi bismuth
 With carbon
 Cd
cadmium
 Si
copper
 Fe iron
 MD magnesium
 Mn Marga-
Heff
 O sour-
rod		 R Foz
Fort		 Pb Swee-
Heff		 S sulfur Sb sur-
mA		 Si cream-
tions		 Sn tin Zn zinc      
Nickel semi NP1
 Min.
 99,9
 -
 - - - - - - - - - - - - - - - - Wire, rods, ribbons, sheets and strip For details of special purpose
    Max. - 0,001 0,001 0,01
 0,001 0,015 0,04 0,01
 0,002 - 0,001 0,001 0,001 0,001 0,03 0,001 0,005 0,1    
  NP2
 Min.
 99,5
 - - - - - - - - - - - - - - - - - Wire, rods, ribbons, sheets and strip For instrumentation and engineering
    Max. - 0,002 0,002 0,1
 0,002
 0,1
 0,1 0,1
 0,05
 - 0,002 0,002 0,005 0,002 0,15 0,002 0,007 0,5    
  NP3
 Min. 99,3
 -
 -
 - -
 -
 -
 - -
 - - - - - - - - - Wire, rods, ribbons, sheets and strip For instrumentation and engineering
    Max.
 - - - 0,15 - 0,15 0,15 0,1
 0,2 - - - 0,015 - 0,15 - - 0,7    
  NP4 Min. 99,0
 -
 -
 -
 -
 - - - - - - - - - - - - - Wire, rods, ribbons, sheets and strip For instrumentation and engineering
    Max.
 - - - 0,1 - 0,15 0,3 0,1 0,2
 - - - 0,015 - 0,15 - - 1,0    
Nickel is anodic semi apossibility NPAN
 Min.
 99,4
 -
 -
 -
 -
 0,01
 -
 -
 -
 0,03 - - 0,002 - - - - - Strip, oval rods For electrolytic coating
    Max.
 - - - - - 0,10 0,1 - 0,05 0,3 - - 0,01 - 0,03 - - 0,6    
Nickel is anodic semi NPA1
 Min.
 99,7
 -
 -
 -
 -
 - - - - - - - - - - - - - Strip, oval rods For electrolytic coating
    Max.
 - - - 0,02 - 0,1 0,1 0,1 0,1 - - - 0,005 - 0,03 - - 0,3    
  NPA2
 Min.
 99,0
 -
 -
 -
 -
 -
 - - - - - - - - - - - - Strip, oval rods For electrolytic coating
    Max. - - - 0,1 - 0,15 0,25
 0,1
 0,15
 - - - 0,005 - 0,15 - - 1,0    
Notes

1 In the Nickel marks NP2 in agreement with the consumer allowed mass fraction of zinc is not more than 0.02%.

2 due to the content of the mass fraction of Nickel is allowed the mass fraction of cobalt in the Nickel marks NP2 — no more than 0.2%, Nickel brand NP4 — no more than 0.6% Nickel brand NPAN — not more than 0.5% Nickel brand NPA1 — no more than 0.15%, Nickel brand NPA2 — not more than 0.7%.

3 the «— «Sign affixed simultaneously to the upper and lower limits of the mass fraction of the element indicates that this element is not specified and is determined only by the demand of the consumer and in this case, the content of the impurities included in the total amount of impurities.

4 Impurities that are not listed in this table are accounted for in the total amount of impurities.

5 Admixture should be considered as the element from which specified only a maximum limit to its content.



Table 2 — Chemical composition of Nickel alloys

                                               
The name of the alloy Mark Limit Mass fraction, %
 Of the product Approximate appointment
      Item
 The amount of the prima
this		    
      Ni+Co Nickel + cobalt
 Al Ala
mini
 As arsenic
 Bi bismuth
 With carbon
rod
 Cd cadmium
 Cr chrome
 Si copper
 Fe iron
 Mg magnesium Mn Mar
Ganz		 P phosphorus Pb lead S sulfur Sb antimony Si cream-
tions		 Sn tin Zn zinc      
Nickel silicon NK0,2 Min.
 99,4 - - - - - - - - - - - - - - 0,15 - - - Tape strips For details of electrical devices and appliances
    Max.
 -
 -
 0,002
 0,002
 0,1
 0,002
 -
 0,1
 0,1
 0,1 0,05 0,002 0,002 0,005 0,002 0,25 0,002 0,007 0,45    
Nickel manganese Nmc1 Min. 98,5 - - - - - - - - - 0,5 - - - - - - - - - Grid control mercury rectifiers
    Max.
 -
 -
 -
 -
 0,05
 -
 -
 0,1
 0,1 0,05 1,0 - - 0,005 - 0,1 - - -    
Nickel manganese Nmc2
 Min. 97.1 the - - - - - - - - - 1,0 - - - - - - - - - Thermally discongruence parts of electronic lamps, high tensile strength, holding-
teli grids, etc.
    Max.
 -
 -
 -
 -
 0,05
 -
 -
 0,2
 0,3
 0,1 2,3 - - 0,005 - 0,2 - - -    
Nickel manganese Nmc2,5 Min. OST. - - - - - - - - - 2,3 - - - - - - - - Wire For candles automotive, aviation and tractor engines
    Max.
 -
 -
 0,03
 0,002
 0,1
 -
 -
 0,2
 0,4
 0,1 3,3 0,01 0,002 0,015 0,002 0,3 - - 1,5    
Nickel manganese Nmc5
 Min. OST. - - - - - - - - - 4,6 - - - - - - - - Wire For candles automotive, aviation and tractor engines, for tubes
    Max.
 -
 -
 0,03
 0,002
 0,15
 -
 -
 0,2
 0,65
 0,1 5,4 0,02 0,002 0,015 0,002 0,3 - - 2,0    
Alumel Nmcak2−2-1 Min.

 OST.,
including cobalt 0,6−1,2		 1,6 - - - - - - - - 1,8 - - - - 0,85 - - - Wire For thermocouples
    Max.
 -
 2,4
 0,002
 0,002
 0,1
 -
 -
 0,25
 0,3
 0,05 2,7 0,005 0,002 0,01 0,002 1,50 - - 0,7    
Chromel T NH9,5 Min. OST.,
including cobalt 0,6−1,2		 - - - - - 9,0 - - - - - - - - - - - - Wire For thermocouples
    Max.
 - 0,15
 0,002
 0,002
 0,2
 -
 10,0
 0,25
 0,3
 0,05 0,3 0,003 0,002 0,01 0,002 0,4 - - 1,4    
Chromel To NH9 Min. OST.,
including cobalt 0,4−1,2		 - - - - - 8,5 - - - - - - - - - - - - Wire For compensating wires
    Max.
 - 0,15
 0,002
 0,002
 0,2
 -
 10,0
 0,25
 0,3
 0,05 0,3 0,003 0,002 0,01 0,002 0,4 - - 1,4    
Chromel TM NHM9,5 Min.
 OST. - - - - - 9,0 - - - - - - - - 0,1 - - - Wire For thermocouples
    Max.
 -
 0,15
 0,002
 0,002
 0,2
 -
 10,0
 0,25
 0,3
 0,05 0,3 0,003 0,002 0,01 0,002 0,6 - - 1,4    
Chromel KM NHM9 Min. OST. - - - - - 8,5 - - - - - - - - 0,1 - - - Wire
 For compensating wires
    Max.
 - 0,15
 0,002
 0,002
 0,2
 -
 10,0
 0,25
 0,3
 0,05 0,3 0,003 0,002 0,01 0,002 0,6 - - 1,4    
Notes

1 In stamps alloys Nmc1, Nmc2, Nmc2,5, Nmc5 allowed mass fraction of cobalt is less than 0.5% due to the content of the mass fraction of Nickel.

2 Total mass fraction of impurities of lead, zinc, cadmium, arsenic, antimony, bismuth and phosphorus in alloys Nmc1 and Nmc2 shall not exceed 0.008%, including mass fraction of zinc — 0,002%.

3 the «— «Sign affixed simultaneously to the upper and lower limits of the mass fraction of the element indicates that this element is not specified and is determined only by the demand of the consumer and in this case, the content of the impurities included in the total amount of impurities.

4 Impurities that are not listed in this table are accounted for in the total amount of impurities.

5 Admixture should be considered as the element from which specified only a maximum limit to its content.



Table 3 — Chemical composition of copper-Nickel alloys

                                               
The name of the alloy Mark Limit Mass fraction, %
 Of the product Approximate appointment
      Item
 The amount
when-
Mesa		    
      Ni +Co Nickel+ cobalt
 AI-Alu-
mini
 As a mouse
Yak
 Bi bismuth
 With carbon
rod
 Si copper
 Fe iron
 Mg of MAG-
tions
 Mn Mar
Ganz
 O sour-
rod
 P Foz
Fort		 Pb Swee-
Heff		 S sulfur Sb sur-
mA		 Si BAP
MNI		 Sn tin Ti titanium Zn zinc      
Kopel
 Mnmc43−0,5
 Min.
 42,5 - - - - OST. - - 0,1 - - - - - - - - - - Wire For thermocouples and compensation wires
    Max. 44,0
 -
 0,002
 0,002
 0,1
 -
 0,15
 0,05
 1,0 - 0,002 0,002 0,01 0,002 0,1 - - - 0,6    
Constantan
 Mnmc40−1,5
 Min. 39,0 - - - - OST.
 - - 1,0 - - - - - - - - - - Wire, strip, ribbon For electrical purposes and compensating wires
    Max.
 41,0
 -
 0,01
 0,002
 0,1
 - 0,5
 0,05
 2,0 - 0,005 0,005 0,02 0,002 0,1 - - - 0,9    
Manganin
 Mnmc3−12
 Min. 2,5 - - - - OST. - - 11,5 - - - - - - - - - - Sheets, wire For electrical purposes, measuring devices
    Max.
 3,5
 -
 0,005
 0,002
 0,05
 - 0,5
 0,03
 13,5 - 0,005 0,02 0,02 0,002 0,1 - - - 0,9    
Manganin
 Mnmcazh3−12−0,3−0,3
 Min. 2,5 0,2 - - - OST. 0,2 - 11,5 - - - - - - - - - - Wire For compensating wires
    Max.
 3,5
 0,4
 -
 -
 -
 -
 0,5
 -
 13,5 - - - - - - - - - 0,4    
Alloy TP
 MN0,6
 Min. 0,57 - - - - OST. - - - - - - - - - - - - - Wire For compensating wires
    Max.
 0,63
 -
 0,002
 0,002
 0,002
 - 0,01
 -
 - - 0,002 0,005 0,005 0,002 0,002 - - - 0,1    
Alloy
 MN95−5
 Min. 4,4 - - - - OST. - - - - - - - - - - - - - Sheets, tubes, rods Products in the engineering industry
    Max.
 5,0
 -
 0,01
 0,002
 0,03
 - 0,2
 -
 - 0,1 0,02 0,01 0,01 0,005 - - - - 0,5    
Cupronickel (Alloy of TB)
 MN16
 Min. 15,3 - - - - OST. - - - - - - - - - - - - - Wire For compensating wires
    Max.
 16,3
 -
 0,002
 0,002
 0,03
 - 0,05
 0,05
 - - 0,002 0,002 0,002 0,002 0,002 - - - 0,2    
Melchior
 MN19 Min. 18,0 - - - - OST. - - - - - - - - - - - - - Strips, strips, rods, tubes Planirovochnye material for medical instruments, precision mechanics
    Max.
 20,0
 -
 0,01
 0,002
 0,05
 - 0,5
 0,05
 0,3 - 0,01 0,005 0,01 0,005 0,15 - - 0,3 1,5    
Melchior
 MN25
 Min. 24,0 - - - - OST. - - - - - - - - - - - - - Sheets, strips, ribbons, rods, tubes Coins, decorative items
    Max.
 26,0
 -
 -
 -
 0,05
 - 0,5
 -
 0,5 - - 0,005 0,01 - - - - 0,3 1,3    
Melchior
 Mnzhmc30−1-1
 Min.
 29,0
 -
 -
 -
 - OST. 0,5
 -
 0,5 - - - - - - - - - - Strip, tape, pipe Condenser tubes, oil coolers, tube air conditioners
in instrument
    Max. 33,0 - - - 0,05
 - 1,0 - 1,0 - 0,01 0,05 0,01 - 0,15 - - 0,5 0,6    
Melchior
 MNZHMC10−1-1
 Min.
 9,0
 -
 -
 -
 - OST. 1,0
 -
 0,3 - - - - - - - - - - Pipe Condenser tubes, the tube plate of air conditioning in instrumentation
    Max. 11,0 - - - 0,03
 - 2,0 - 1,0 - - 0,03 0,03 - - - - 0,3 0,5    
Alloy
 MNZH5−1
 Min.
 5,0
 -
 - - - OST. 1,0
 -
 0,3 - - - - - - - - - - Sheets, tubes, rods Piping, parts for electrical engineering
and instrumentation
    Max. 6,5 - 0,01
 0,002
 0,03
 - 1,4 - 0,8 - 0,04 0,005 0,01 0,005 0,15 0,1 - 0,5 0,7    
Alloy
 MNZHKT5−1-0,2−0,2
 Min.
 5,0
 -
 -
 -
 - OST. 1,0
 -
 0,3 - - - - - 0,15 - 0,1 - - Wire For welding, surfacing and brazing / soldering
    Max.
 6,5 - - - 0,03
 - 1,4 - 0,8 - - 0,005 - - 0,30 - 0,3 0,5 0,7    
Cunial And
 MNA13−3 Min.
 12,0
 2,3
 -
 -
 -
 OST. - - - - - - - - - - - - - Bars For products with enhanced strength in mechanical engineering
    Max.
 15,0 3,0 - - - - 1,0
 - 0,5 - - 0,002 - - - - - - 1,9    
Cunial B
 MNA6−1,5 Min.
 5,5
 1,2
 - - - OST. - - - - - - - - - - - - - Strip For springs
and other products in the electrical industry
    Max.
 6,5 1,8 - - - - 0,5
 - 0,2 - - 0,002 - - - - - - 1,1    
Monel
 Nmzhmc28−2,5−1,5 Min.
 OST. - - - - 27,0
 2,0
 - 1,2 - - - - - - - - - - Sheets, strips, ribbons, wire For anticorrosive parts
    Max.
 - - 0,01
 0,002
 0,2 29,0 3,0 0,1
 1,8 - 0,01 0,003 0,01 0,002 0,05 - - - 0,6    
Nickel silver MNC12−24 Min.
 11,0
 - - - - 62,0
 - - - - - - - - - - - OST. - Sheets, strips, ribbons, rods, profiles, tubes, wire Cases for hours,
hot-pressed parts
    Max.
 13,0 - - - - 66,0 0,3
 - - - - 0,05 - - - - - - 0,6    
Nickel silver MNC15−20 Min.
 13,5
 - - - - OST. - - - - - - - - - - - 18,0 - Strips, tapes, tubes, rods, wire Springs of relay parts, electrical, parts, obtained by a deep hood, Cutlery, Handicrafts
    Max. 16,5
 - 0,01
 0,002
 0,03 - 0,3
 0,05 0,3 - 0,005 0,02 0,01 0,002 0,15 - - 22,0 0,9    
Nickel silver
 MNC18−20
 Min.
 17,0
 - - - - 60,0
 - - - - - - - - - - - OST. - Sheets, strips, ribbons, rods, wire Spring relay parts produced to deep; Cutlery, Handicrafts
    Max. 19,0 - - - - 64,0 0,3
 - 0,5 - - 0,03 - - - - - - 0,6
    
Nickel silver
 MNC18−27
 Min.
 17,0
 - - - - 53,0
 - - - - - - - - - - - OST. - Sheets, strips, ribbons, rods, profiles, tubes, wire Cases for hours,
hot-pressed parts
    Max.
 19,0 - - - - 56,0 0,3
 - 0,5 - - 0,05 - - - - - - 0,6    
Svintsoviy Nickel silver MNCS16−29−1,8
 Min.
 15,0
 - - - - 51,0
 - - - - - 1,6 - - - - - OST. - Strip Products watch industry
    Max.
 16,5 - - - - 55,0 - - - - - 2,0 - - - - - - 1,0    
Notes

1 In grades MN19, MN25, Mnzhmc10−1-1, Mnzhmc30−1-1, MNZH5−1, MNC12−24, MNC15−20, MNC18−27, MNC18−20 allowed the mass fraction of cobalt is not more than 0.5% by mass fraction of Nickel, which is not included in the total amount of impurities. Mass fraction of cobalt in excess of 0.5%, included in the total amount of impurities.

2 alloys MN25, Mnzhmc10−1-1, MNC12−24, MNC18−27, MNC18−20 by agreement with consumer it is permitted to determine mass fraction of impurities of silicon, magnesium, arsenic, bismuth, phosphorus, tin, antimony.

3 In grades MN19, MNC15−20, Mnzhmc30−1-1 allowed the determination of the mass fraction of tin.

4 cupronickel MN19 brand used for the manufacture of coins permitted an increase of the content of the mass fraction of manganese or iron is more than indicated in this table, but their amount should not exceed 1.3 percent. The cupronickel MN19 brand used for the manufacture of tapes for special purposes, the following content of impurities: mass fraction of manganese — not more than 0.01%, magnesium not more than 0.01%, silicon not exceeding 0.15%, iron not more than 0.3% and sum of impurities not more than 0.6%.

5 Constantan brand Mnmc40−1,5 used in electronic equipment, the contents of the mass fraction of zinc should be no more than 0,03%.

6 In the alloy brand MNZH5−1 and cupronickel MN19 brand allowed plumbum not more than 0.05%.

7 In cupronickel MN19 brand for agreement with the consumer allowed the contents of the mass fraction of phosphorus not more than 0.02%.

8 the «— «Sign affixed simultaneously to the upper and lower limits of the mass fraction of the element indicates that this element is not specified and is determined only by the demand of the consumer and in this case, the content of the impurities included in the total amount of impurities.

9 Impurities that are not listed in this table are accounted for in the total amount of impurities.

10 Admixture should be considered as the element from which specified only a maximum limit to its content.

3.2 Chemical composition of Nickel, Nickel and copper-Nickel alloys, depending on the grades determined according to GOST 6012, 6689.1 GOST-GOST 6689.22, 6689.24 GOST, GOST 22598.

Allowed the use of other methods of analysis, accuracy is not inferior to the above.

Arbitration methods of analysis point in the standards for specific types of products.

3.3 the analysis Results of each element are rounded according to the rounding rules established ST SEV 543, with the accuracy provided by tables 1, 2 and 3.

In disputable cases the results of the analysis is determined with the accuracy specified in the arbitration method of measurements.