Alloy KHN38VT (ЭИ703)

  • Alloy 05KhN46MVBh (DI65)
  • Alloy KhN30VMT (EP437; VZH102)
  • Alloy KhN30TDU (EP655; VNS12)
  • Alloy KhN38VT (EI703)
  • Alloy KhN45TU (EK101; VKS-46)
  • Alloy KhN45Yu (EP747)
  • Alloy KhN50MVKTYR (EP99)
  • Alloy CrN60VT (EI868; VZh98)
  • Alloy KhN60Yu (EI559A)
  • Alloy KhN70Yu (EI652)
  • Alloy KhN75MBTU (EI602)
  • Alloy KhN77TU (EI437A)
  • Alloy CrN78T (EI435)
  • Alloy EC79

    • Designation

    Name The value
    Designation GOST Cyrillic ХН38ВТ
    Designation GOST Latin XH38BT
    Transliteration HN38VT
    By chemical elements CrNi38ВTe
    Name The value
    Designation GOST Cyrillic ЭИ703
    Designation GOST Latin EI703
    Transliteration EhI703
    By chemical elements -

    Description

    Alloy KHN38VT used: for the production of cold-rolled strip; hot-rolled steel plate; solid-rolled rings for different purposes; parts for gas systems, sheet metal parts operating at moderate voltages and loads; welding wire used for welding parts and welding of steel structures in energy engineering; welding electrodes.

    Note

    Heat-resistant and heat-resistant alloy of iron-Nickel basis.
    The recommended maximum operating temperature for a long time +1000 °C. the Temperature of intensive scaling in air +1050 °C.
    Recommended for replacement of high-temperature alloy KHN78T.

    Standards

    Name Code Standards
    Sheets and strips В23 GOST 19904-90
    Sheets and strips В33 GOST 24982-81, TU 14-1-146-71, TU 14-1-1747-76, TU 14-1-2114-77, TU 14-1-5103-92
    Classification, nomenclature and General rules В30 GOST 5632-72
    Processing of metals by pressure. Forgings В03 OST 1 90110-73, TU 14-1-1530-75, TU 14-1-2902-80, TU 14-1-2918-80
    Bars and shapes В32 OST 1 92049-76, TU 14-1-476-72, TU 14-11-245-88
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, OST 1 90159-92, OST 1 90345-83, OST 1 90398-91, TU 14-1-1214-75
    Tape В34 TU 14-1-927-74
    Welding and cutting metals. Soldering, riveting В05 TU 14-1-997-74, TU 14-1-997-2012

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Al Ti Mo W Ce
    TU 14-1-2918-80 0.06-0.12 ≤0.02 ≤0.03 ≤0.7 20-23 ≤0.8 35-39 Rest ≤0.3 ≤0.5 0.7-1.2 ≤0.8 2.8-3.5 ≤0.05
    TU 14-1-997-74 0.06-0.12 ≤0.02 ≤0.03 ≤0.7 20-23 ≤0.8 35-39 Rest - ≤0.5 0.7-1.2 ≤0.8 2.8-3.5 ≤0.05
    TU 14-1-476-72 0.06-0.12 ≤0.02 ≤0.03 ≤0.7 20-23 ≤0.8 35-39 Rest - ≤0.5 0.7-1.2 ≤0.8 2.8-3.5 -
    TU 14-1-146-71 0.06-0.12 ≤0.02 ≤0.03 ≤0.7 20-23 ≤0.8 35-39 Rest ≤0.07 ≤0.5 0.7-1.2 ≤0.8 2.8-3.5 ≤0.05
    TU 14-1-927-74 0.06-0.12 ≤0.02 ≤0.03 ≤0.7 20-23 ≤0.8 35-39 Rest ≤0.2 ≤0.5 0.7-1.2 ≤0.8 2.8-3.5 ≤0.05
    Fe is the basis.
    According to TU 14-1-2902-80 the chemical composition is given for ХН38ВТ, ХН38ВТ-Ш.
    According to TU 14-1-997-74, the alloy has the marking ХН38ВБ (ЭИ703Б), if in accordance with the order niobium Nb = 1,20-1,70% is introduced instead of titanium.
    According to TU 14-1-1747-76 the chemical composition is given for ХН38ВТ and ХН38ВТ-ВД.
    According to TU 14-1-2918-80 the chemical composition is given for ХН38ВТ.
    According to TU 14-1-927-74 the chemical composition is given for ХН38ВТ. The deoxidizers (cerium, calcium, barium) are introduced into the metal by calculation and chemical analysis is not determined. At the request of the consumer, instead of titanium, niobium is introduced in the range 1.20-1.70%, in which case the alloy is marked EI703B.
    According to TU 14-1-476-72 the chemical composition is given for ХН38ВТ. It is allowed to deoxidize with cerium, which is introduced into the metal by calculation in an amount of 0.050% and is not determined by chemical analysis. The content of residual elements is according to GOST 5632.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Cold-rolled steel strip of 0.2-1.2 mm on the other 14-1-927-74. Quenching in water or air with 1100-1140 °C
    - - ≤834 ≥35 -
    Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 11.0 mm) in the delivery state according to GOST 24982-81 (quenching in water, under a water shower or air)
    0.8-11 - ≥185 ≥40 -
    ≤3.9 - ≤800 ≥35 -
    4-11 - ≤830 ≥35 -
    Forgings. Quenching in water or air with 1120-1160 °C
    ≥196 ≥540 ≥35 ≥45
    Bars on the other 14-1-476-72. Quenching in water or air with 1120-1160 °C
    ≥196 ≥539 ≥35 ≥45

    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
    Macrostructure and pollution The macrostructure of the alloy should not have shrinkage and looseness, bubbles, cracks, inclusions, delaminations, and placenow.