Alloy 58НХВКТБЮ (ЭП877; ХН58ВКБТЮ)

Designation

Name The value
Designation GOST Cyrillic 58НХВКТБЮ
Designation GOST Latin 58HXBKTBJu
Transliteration 58NHVKTBYu
By chemical elements 58NiCrВCoTeBeAl
Name The value
Designation GOST Cyrillic ЭП877
Designation GOST Latin EP877
Transliteration EhP877
By chemical elements -
Name The value
Designation GOST Cyrillic ХН58ВКБТЮ
Designation GOST Latin XH58BKBTJu
Transliteration HN58VKBTYu
By chemical elements CrNi58ВCoBeTeAl

Description

Alloy 58НХВКТБЮ used: for the manufacture of ingots, hot-rolled and forged bars intended for the production of highly loaded high-temperature elastic elements of Aviapribor and automatic systems of aircraft.

Note

High-temperature age-hardening Nickel-based alloy.

Standards

Name Code Standards
Blanks. Of the workpiece. Slabs В31 TU 1-809-823-99
Bars В55 TU 14-1-3182-81

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al B Ti Nb W Co Y La
TU 14-1-3182-81 ≤0.05 ≤0.007 ≤0.015 ≤0.4 16-18 ≤0.5 Rest 11-13 ≤0.07 1.3-1.8 ≤0.009 2.5-3 1.4-1.7 11-12.5 6-7 ≤0.02 ≤0.02
Ni is the basis.
According to TU 14-1-3182-81, the chemical composition is given for the alloy grade 58NHVKTVBU-VI (EP877-VI). Boron, lanthanum and yttrium are introduced by calculation and chemical analysis is not determined. In the finished product, deviations in chemical composition are allowed: cobalt -0.50%, sulfur +0.0030%, copper + 0.030%. The alloy allows the presence of lead, antimony, tin, bismuth and arsenic not more than 1 point of the special analysis scale. The content of residual elements in the alloy in accordance with GOST 5632.

Mechanical properties

Section, mm σU, MPa d5, % HB, MPa
Bars hot rolled and forged on the other 14-1-3182-81. Quenching in water from 1130±10 °C + the Dispersion hardening at 800±10 °C (exposure 4 h) and at 700±10 °C (6 h exposure)
≥1323 ≥10 ≥415

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
HB Brinell hardness number

Technological properties

Name The value
Macrostructure and pollution The macrostructure of the alloy should not have shrinkage, porosity, bubbles, cracks, inclusions, brown, bundles.
Particularities of production of goods Bars hot rolled and forged on the other 14-1-3182-81 are supplied without heat treatment. Allowed to supply bars with heat treatment regime: Quenching in water from 1130±10 °C.