Alloy 03KHN28MDT (ЭП516)

  • 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 03ХН28МДТ
    Designation GOST Latin 03XH28MDT
    Transliteration 03HN28MDT
    By chemical elements 03CrNi28CuДTe
    Name The value
    Designation GOST Cyrillic ЭП516
    Designation GOST Latin EP516
    Transliteration EhP516
    By chemical elements -

    Description

    Alloy 03KHN28MDT used: for the manufacture of welded structures operating in the production of sulfuric acid, nitrophoska, wet-process phosphoric acid and other environments of increased aggressiveness at temperatures up to +80 °C; in sulphuric acid of different concentrations and in acidic and sulphate environments, with the exception of 55% acetic and phosphoric acids; welding electrodes; all equipment connections, joints of pipelines in the apparatus, connections, pipes, fittings etc. with a vehicle body and repair welds equipment used in radioactive environments.

    Note

    Alloy for corrosion-resistant iron-based.
    03KHN28MDT alloy has a high resistance to intergranular corrosion and knife compared to the alloy 06HN28MDT.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 5632-72
    Bars and shapes В32 GOST 5949-75, GOST 14955-77, TU 14-11-245-88
    Sheets and strips В33 GOST 7350-77
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90
    Welding and cutting metals. Soldering, riveting В05 OST 95 10441-2002
    Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004
    Steel pipes and fittings to them В62 TU 14-158-135-2003, TU 14-3-694-78, TU 14-3-696-78, TU 14-3-751-78, TU 14-1-756-73, TU 14-3-1201-83

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
    GOST 5632-72 ≤0.03 ≤0.02 ≤0.035 ≤0.8 22-25 ≤0.8 26-29 Rest 2.5-3.5 ≤0.2 0.5-0.9 2.5-3 ≤0.2
    Fe is the basis.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Hot rolled sheet (4,0-25,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water from 1040-1080 °C
    - ≥215 ≥540 ≥35 -
    Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1050-1080 °C
    ≥220 ≥520 ≥25 ≥40
    Cold-rolled tubes after austenization on delivery
    - ≥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
    y The relative narrowing

    Technological properties

    Name The value
    Weldability automatic arc welding with non-consumable electrode in a continuous mode, manual argon arc welding with non-consumable electrode (filler or without filler material), combined welding methods. Allowed the use of manual arc welding with coated electrodes.
    Features of heat treatment Products made of alloy for maximum corrosion resistance should be subjected to the annealing regime: heating to 1050-1080 °C, exposure with wall thickness up to 15 mm - 30 min, more than 15 mm - 30 min + 1 min per 1 mm max thickness cooling in water or air. The annealing products of alloy has not been subjected to welding, stress relieving should be carried out at 950 ±10 °C for 2 h, cooling in air. Annealing of weldments from the alloy to relieve stresses should be carried out at 1050±10 °C, hold for 2 h, cooling in air.