Alloy CR20NI80

  • Alloy Kh20H80-H
  • Alloy KhN70Yu-N
  • Alloy CrN20YUS (EC11)
  • Alloy X40H60
  • Alloy Kh27Yu5T (EI626)
  • Alloy Х27Ю5А (0Х27Ю5А)
  • Alloy Kh25H20 (EP74)
  • Alloy X23Yu5T
  • Alloy Х23Ю5А (0Х23Ю5А)
  • Alloy Kh23Yu5 (EI595)
  • Alloy Kh20H80-N-VI
  • Alloy Kh20H80
  • Alloy Kh20H73YUM-VI
  • Alloy X15Yu5
  • Alloy Kh15N60-N-VI
  • Alloy Kh15N60-H
  • Alloy X15H60
  • Alloy Kh13Yu4 (EI60)
  • Alloy Н80ХЮД-VI (Н80ХЮД)
  • Alloy H50XL
  • Alloy H50K10

    • Designation

    Name The value
    Designation GOST Cyrillic Х20Н80
    Designation GOST Latin X20H80
    Transliteration H20N80
    By chemical elements Cr20Ni80

    Description

    Alloy CR20NI80 used: for the manufacture of critical parts vnutrivakuumnyh appliances; connectors in electronic devices; nepretsizionnyh resistors; cold drawn wire micron size and resistance elements; powder used in the production of goods and permeable laminated and sintered porous tape, filters for the filtration of lubricating oils, fuels, alkalis, air and other gases and fluids, as well as for the manufacture of plamegasiteli; porous coolers; powder used for the manufacture of sealing inserts of the turbines of the rolled strip 0.1−1.0 mm for the manufacture of heating elements and resistance elements; crimped ribbon 0,05 ± 0,005 x 0,25 ± 0,05 special purpose for the manufacture of braided wiring harness; powders used as a plasma protective and strengthening coatings in the aviation industry; the thinnest wire (0,009−0,400 mm) for the production of resistive elements; wire and strip for industrial electrical apparatus heating effect, rheostats, elektrosoprotivleniya, micro wire, and appliances.

    Note

    Alloy with specified temperature coefficient of electrical resistance.
    The powder of alloy CR20NI80 made by the joint recovery of a mixture of metal oxides and metal powders with calcium hydride.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 10994-74
    Tape В34 GOST 12766.5-90, GOST 12766-67, TU 14-1-1388-75, TU 14-1-1714-76, TU 14-1-3223-81, TU 14-1-4983-91, TU 14-4-694-76
    Hard alloys, ceramic-metal products and metal powder В56 GOST 13084-88, TU 14-127-232-85
    Wire, steel, alloy В73 GOST 8803-89, OST 88.0.022.202-74, TU 14-4-127-72, TU 14-4-1285-84, TU 14-1-3225-81, TU 14-131-820-90
    Wire from nonferrous metals and their alloys В74 OST 4Г 0.022.004-69, OST 4Г 0.022.005-69
    Blanks. Of the workpiece. Slabs В31 TU 14-1-1690-76, TU 14-1-3904-84, TU 14-1-4624-89
    Steel wire medium and high carbon В72 TU 14-1-3224-81
    Bars and shapes В32 TU 14-1-3744-84, TU 14-11-245-88, TU 14-1-1271-75

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Al Ti Ca O Zr
    TU 14-1-4624-89 ≤0.05 ≤0.007 ≤0.008 ≤0.3 20.5-22.5 0.5-0.8 Rest ≤1.5 ≤0.02 ≤0.05 - - -
    TU 14-1-3225-81 ≤0.1 ≤0.02 ≤0.03 ≤0.7 20-23 0.9-1.5 Rest ≤1.5 ≤0.2 ≤0.3 - - -
    GOST 13084-88 ≤0.06 ≤0.01 - ≤0.05 18-22 ≤0.1 Rest ≤0.3 - ≤0.08 ≤0.2 ≤0.3 -
    GOST 12766-67 ≤0.15 ≤0.02 ≤0.03 ≤0.7 20-23 0.4-1.5 Rest ≤1.5 ≤0.2 ≤0.3 - - ≤0.5
    Ni is the basis.
    According to TU 14-1-4624-89, the chemical composition is given for the alloy grade Kh20N80-VP. The alloy controls the oxygen and nitrogen content - the results are recorded in the certificate.
    In accordance with GOST 10994-74 and TU 14-1-3225-81, the chemical composition is given for the alloy grade Kh20N80. The presence of residual rare-earth elements, as well as barium, calcium, magnesium is not a defective feature. The alloy grade X20N80-VI is characterized by mass fractions of the following elements: carbon ≤ 0.050%, sulfur and phosphorus ≤ 0.010%, manganese ≤ 0.30%, titanium ≤ 0.050%, aluminum ≤ 0.15%, silicon 0.40-1, 00%. In accordance with GOST 10994-74 for alloy grade X20N80-VI, deoxidation by rare earth elements and zirconium is not allowed.
    According to GOST 13084-88 the chemical composition is given for powder grade ПХ20Н80.
    According to GOST 12766-67, the chemical composition is given for the alloy grade Kh20N80. The presence in the alloy of residual rare-earth elements, as well as barium and calcium, is not a defective feature. In the alloy intended for the production of micron-sized wires, the aluminum content should be no more than 0.150% and titanium not more than 0.050%. In the glory intended for the manufacture of wire with a diameter of 0.09 mm or less, the carbon content is not more than 0.060%. In the alloy intended for the manufacture of wire for enameling, the titanium content should not be more than 0.10%.

    Mechanical properties

    Section, mm σU, MPa d5, % d y, %
    Flattened strip as supplied on the other 14-4-694-76
    0.05 ≥980 - - -
    The mechanical properties of the alloy at short-term burst tests according to GOST 12766-67. Quenching in water from 1200 °C (20 minute exposure)
    - ≥654 - ≥45.4 ≥61
    The thinnest wire for resistive elements in the delivery state according to GOST 8803-89
    0.009-0.4 620-680 - - -
    The mechanical properties of the alloy at short-term burst tests according to GOST 12766-67. Quenching in water from 1200 °C (20 minute exposure)
    - ≥436 - ≥40 ≥40.2
    The alloy in the state of delivery without additional heat treatment
    ≥400 ≥50 - -
    The mechanical properties of the alloy at short-term burst tests according to GOST 12766-67. Quenching in water from 1200 °C (20 minute exposure)
    - ≥214 - ≥70.1 ≥72.5
    The alloy in the state of delivery without additional heat treatment
    ≥770 ≥14.5 - -
    The mechanical properties of the alloy at short-term burst tests according to GOST 12766-67. Quenching in water from 1200 °C (20 minute exposure)
    - ≥92.7 - ≥55 ≥82
    - ≥71.88 - ≥70 ≥62.5
    - ≥35.41 - ≥130 ≥93.3
    - ≥27.37 - ≥110 ≥96.5
    - ≥22.95 - ≥101.8 ≥98

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d5 Elongation after rupture
    d Elongation after rupture
    y The relative narrowing

    Physical characteristics

    Temperature r, kg/m3 R, Mr. · m a, 10-6 1/°C
    20 8400 1040-1170 -
    1000 - - 163

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    l Coefficient of thermal conductivity
    R UD. the resistivity
    С Specific heat

    Technological properties

    Name The value
    Microstructure Austenitic structure.
    Features of heat treatment Alloy after special heat treatment has a temperature coefficient of electrical resistance in the temperature range from minus 60 to plus 100 °C about 0.9·10-4 °C-1.
    Magnitnoi Non-magnetic alloy.
    Okalinolomatel, heat resistance Onlinetony alloy in an oxidizing atmosphere, hydrogen, vacuum; unstable in an atmosphere containing sulfur and sulfur compounds; more heat resistant than homoalanine alloys.
    Operating temperature The working temperature of heating element: Optimal 1050 °C, maximum 1100 °C.