Alloy ХН40МДБ (ЭП937)

  • Alloy 01X18H40M5G2TFRY (EP753U)
  • Alloy 01X18H40M5GB (EP753; ČS116)
  • Alloy 01X18H40M5GBR (EP753R)
  • Alloy 03KhN28MDT (EP516)
  • Alloy 06XHN28MDT (EI943)
  • Alloy 06XHN28MT (EI628)
  • Alloy Kh33TMMDU (EK63)
  • Alloy KhN30MDB (EK77)
  • Alloy CrN40B (EP337)
  • Alloy KhN40M5T2GYUBR (EK173)
  • Alloy CrN40MDB (EP937)
  • Alloy CrN40MDTU (EP543U)
  • Alloy CrN46B (EP350; 0Х20Н46B)

    • Designation

    Name The value
    Designation GOST Cyrillic ХН40МДБ
    Designation GOST Latin XH40MDB
    Transliteration HN40MDB
    By chemical elements CrNi40CuДBe
    Name The value
    Designation GOST Cyrillic ЭП937
    Designation GOST Latin EP937
    Transliteration EhP937
    By chemical elements -

    Description

    Alloy ХН40МДБ used: for the manufacture of billets, sheet and rolled steel used to manufacture parts and equipment of chemical and petrochemical engineering.

    Standards

    Name Code Standards
    Sheets and strips В33 TU 14-1-2131-77
    Blanks. Of the workpiece. Slabs В31 TU 14-1-5052-91

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu N Al V B Mo Ce
    TU 14-1-2131-77 ≤0.03 ≤0.02 ≤0.02 0.8-1.5 20-22 ≤0.2 39-42 Rest 1.5-2.2 ≤0.03 ≤0.2 ≤0.2 ≤0.002 5-6.5 ≤0.03
    Ni is the basis.
    According to TU 14-1-2131-77 the chemical composition is given for the alloy grade KhN40MDB-VI (EP937-VI). The content of niobium in the alloy should be in the range of 15С ÷ 0.8%. Cerium, boron are introduced into the metal by calculation and chemical analysis is not determined. It is allowed to introduce yttrium, the estimated content of which in the range of 0.005-0.10% is established by the supplier's technological instructions and its residual content in the metal is not determined by chemical analysis. In the finished metal, deviation in the silicon content by +0.10%, nitrogen by +0.010%, aluminum by +0.10% is allowed.

    Mechanical properties

    sT|s0,2, MPa σU, MPa d5, %
    Sheet metal in delivery condition on the other 14-1-2131-77. Heating to 1050-1090 °C (the heating time is 5 minutes per 1 mm thickness), cooling in water or under water shower
    ≥196 ≥490 ≥30

    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
    Corrosion resistance ХН40МДБ alloy possesses exceptionally high resistance to pitting and pitting corrosion, corrosion cracking in chloride and hydrogen sulfide-containing media.
    Foreign counterparts C-NiCr22Fe20Mo7Cu2 (ISO 12725); HASTELLOY G-3 alloy (HAYNES); NW6985 (Japan)