Alloy 36NKH (ЭП713)

  • Alloy 36H
  • Alloy 80HMV (80HMVX3)
  • Alloy 58H (EI792)
  • Alloy 52H (EI676; 52H-VI)
  • Alloy 48NH (EI693)
  • Alloy 47NHR
  • Alloy 47NH (EI563)
  • Alloy 47ND (47ND-VI)
  • Alloy 47H3X
  • Alloy 42NA-VI (EP333)
  • Alloy 42H (EP318; 42NA)
  • Alloy 40K27KhNM with tantalum
  • Alloy 39H
  • Alloy 38NKD (38NKD-VI)
  • Alloy 36NH (EP713)
  • Alloy 35NKT
  • Alloy 35NKG (EK53)
  • Alloy 34NKD
  • Alloy 33HX3 (EP547)
  • Alloy 33NK (33NK-VI)
  • Alloy 32NKh3 (EP546)
  • Alloy 32NKD (EI630A)
  • Alloy 32NK (EP475)
  • Alloy 31NH3G (EP545)
  • Alloy 30NKD (30NKD-VI)
  • Alloy 29NK (29NK-VI)
  • Alloy 18KhTF
  • Alloy 18KhMTF

    • Designation

    Name The value
    Designation GOST Cyrillic 36НХ
    Designation GOST Latin 36HX
    Transliteration 36NH
    By chemical elements 36NiCr
    Name The value
    Designation GOST Cyrillic ЭП713
    Designation GOST Latin EP713
    Transliteration EhP713
    By chemical elements -

    Description

    Alloy 36NKH used: for the production of billets ragged, made the free forging on presses or RCM and intended for the manufacture of tubes; manufacture of structures and pipelines operating at low temperatures.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 10994-74
    Blanks. Of the workpiece. Slabs В31 TU 14-1-2526-78, TU 14-1-2543-78
    Bars and shapes В32 TU 14-11-245-88

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    TU 14-1-2526-78 ≤0.05 ≤0.02 ≤0.02 0.3-0.6 0.4-0.6 ≤0.3 35-37 Rest ≤0.25
    GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 0.3-0.6 0.4-0.6 ≤0.3 35-37 Rest ≤0.25
    Fe is the basis.
    According to GOST 10994-74 the chemical composition is presented for the 36NX alloy (EP713).
    TU 14-1-2526-78 chemical composition is presented for the alloy grade 36NH-SH (EP713-SH). In the finished metal, deviations are allowed for the content of manganese and chromium - (minus) 0.10% for each element.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, %
    Tubular billet on the other 14-1-2526-78. Heating to 850-900 °C (exposure for 15 minutes), air cooling or furnace (longitudinal samples)
    20-25 ≥196 ≥390 ≥38

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d5 Elongation after rupture

    Technological properties

    Name The value
    Pressure treatment Clan and the ratio of the extrusion billet according to TU 14-1-2526-78 should be not less than 2.8 in terms of the sizes of the cross sections of the ingot and workpiece.
    Macrostructure and pollution In the macrostructure of the workpiece in the state of delivery should be free of cracks, gas bubbles, subcortical bubbles, Samorodov crust, delamination, traces of shrinkage and slag inclusions visible to the naked eye. The degree of development of the Central porosity, point heterogeneity and phase separation of the square in points should not exceed 1 score. The alloy is checked on the contamination of non-metallic inclusions. The norm of non-metallic inclusions by the maximum score should not exceed: - oxides, stroke is 1.5; the oxides of point - 2,0; - silicates fragile - 1.5, and - silicates plastic - 1,5; the non - deformed silicates - 1,5; - sulphides - 1,0; - nitrides and carbonitrides and 3.0.
    Temperature coefficient of linear expansion According to GOST 10994-74 CTE (1.0 to 2.0)·10-6 deg-1 in the temperature range 20÷100 °C and from plus 20 to minus 258 °C. On the other 14-1-2526-78 CTE (0,6-2,2)·10-6 deg-1 in the temperature range 20÷100 °C.