Alloy SV-08Х25Н40М7 (ЭП673)

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  • Alloy Sv-08X25N25M3 (EP622)
  • Alloy Sv-08Х25Н40М7 (EP673)
  • Alloy Sv-08Х25Н60М10 (EP606)
  • Alloy Sv-36NGMT (EP803)
  • Alloy SvHN60MVU (ChS40)

    • Designation

    Name The value
    Designation GOST Cyrillic Св-08Х25Н40М7
    Designation GOST Latin Cb-08X25H40M7
    Transliteration Sv-08H25N40M7
    By chemical elements 08Cr25Ni40Cu7
    Name The value
    Designation GOST Cyrillic ЭП673
    Designation GOST Latin EP673
    Transliteration EhP673
    By chemical elements -

    Description

    Alloy SV-08Х25Н40М7 used: for the production of welding wire designed for mechanized welding of dissimilar steels (high-alloy heat-resistant steels with medium to low alloy heat resistant steel) and hardened steels without subsequent heat treatment and without pre-heating in the manufacture and repair of structures operating at temperatures of 450−550 °C, high humidity and aggressive environmental influences; the manufacture of electrodes ANZHR-2.

    Note

    High-alloyed high-temperature Nickel-based alloy.

    Standards

    Name Code Standards
    Welding and cutting metals. Soldering, riveting В05 TU 14-1-4968-91, TU 14-4-598-75, TU 14-1-1001-74

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Ti Mo
    TU 14-1-4968-91 ≤0.08 ≤0.015 ≤0.02 1-2 23.5-26.5 ≤0.4 38.5-41.5 Rest - 6.5-8
    TU 14-4-598-75 ≤0.1 ≤0.016 ≤0.025 1.2-2.5 22.5-26 ≤0.5 38-42 Rest ≤0.05 6.3-8.8
    Ni is the basis.
    According to TU 14-1-4968-91, the chemical composition is given for the alloy Sv-08X25N40M7 (EP673).
    According to TU 14-4-568-74, the chemical composition is given for the welded weld metal made by an ANZHR-2 welding electrode manufactured from the Sv-08Kh25N40M7 alloy (EP673).

    Mechanical properties

    σU, MPa d5, % KCU, kJ/m2
    Weld, the weld electrode brand ANZHR-2 in the initial state on the other 14-4-598-75
    ≥590 ≥35 ≥1177

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d5 Elongation after rupture
    KCU Toughness

    Technological properties

    Name The value
    Weldability The welding wire provides a stable arc, excellent formation of root, fill and cap weld layers, does not require preheating and subsequent heat treatment of the weld.
    Microstructure The content of ferritic phase in the wire is governed only by agreement of the parties.
    Particularities of production of goods Wire on the other 14-1-4968-91 diameter up to 2.0 mm inclusively, supplied in cold-worked condition with a compression no more than 50% and over 2.0 mm supplied in heat treated condition.