Alloy ХН50ВМТЮБ (ЭП648)

Designation

Name The value
Designation GOST Cyrillic ХН50ВМТЮБ
Designation GOST Latin XH50BMTJuB
Transliteration HN50VMTYuB
By chemical elements CrNi50ВCuTeAlBe
Name The value
Designation GOST Cyrillic ЭП648
Designation GOST Latin EP648
Transliteration EhP648
By chemical elements -

Description

Alloy ХН50ВМТЮБ used: for the production of cold rolled sheets; pipes and tubes by hot forming; the production of highly loaded parts, fittings, flanges, sheet hire for a limited term service at temperatures up to +950 °C; the manufacture of aeronautical engineering parts (discs, gas turbine blades).

Note

High-temperature Nickel-based alloy.

Standards

Name Code Standards
Bars and shapes В32 GOST 22411-77, TU 14-1-4103-86, TU 14-1-3046-80, TU 14-1-3046
Blanks. Of the workpiece. Slabs В31 OST 1 90303-81, OST 1 90424-92, TU 14-1-1213-75, TU 1-809-823-99
Sheets and strips В33 TU 14-1-1052-74, TU 14-1-1072-74
Tape В54 TU 14-1-1423-75
Processing of metals by pressure. Forgings В03 TU 14-1-1530-75
Steel pipes and fittings to them В62 TU 14-3-837-79, TU У 14-8-37-2001

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al B Ti Mo Nb W Ce
TU 14-1-1072-74 ≤0.1 ≤0.01 ≤0.015 ≤0.5 32-35 ≤0.4 Rest ≤4 0.5-1.1 ≤0.008 0.5-1.1 2.3-3.3 0.5-1.1 4.3-5.3 ≤0.03
Ni is the basis.
According to TU 14-1-3046-80, TU 14-1-1072-74 and TU 14-1-1052-74, TU 14-1-1423-75, the chemical composition is given for the alloy of grade ХН50ВМТЮБ-ВИ (ЭП648-ВИ) . Boron and cerium are introduced into the metal by calculation and chemical analysis are not determined. Deviations in chemical composition in accordance with GOST 10500, GOST 5632.
According to TU 14-1-4103-86, the chemical composition is given for the alloy KhN50VMTUB-ID (EP648-ID). Boron and cerium are introduced into the metal by calculation and chemical analysis are not determined. As a charge for the smelting of the alloy, electrolytic refined chromium grade "ERH" is used. The use of chromium grades "ХР99,2 (ач)", "ХР98,7 (ач)", "ХР98,5 (ач)" is allowed.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % d4 y, % KCU, kJ/m2
Tape supplied on the other 14-1-1423-75. Annealing in air 1130-1150 °C
0.15-0.8 - ≥1030 - ≥25 - -
Hot-rolled steel sheets in the delivery condition on the other 14-1-1072-74. Heating up to 1130-1150 °C (aging for 1 h) + Quenching in air or in water
- ≥1030 ≥30 - - -
Cold-rolled steel sheets in the delivery condition on the other 14-1-3046-80
- ≤1030 ≥35 - - -
Cold-rolled steel sheets according to TU 14-1-3046-80. Heating up to 1130-1150 °C (aging for 1 h), air cooling + Ageing at 900 °C (aging 16 h), air cooling
- ≥760 ≥17 - - -
Bars hot rolled and forged on the other 14-1-3046-80. Heating up to 1130-1150 °C (aging for 1 h), air cooling + Ageing at 880-920 °C (aging 16 h), air cooling
≥340 ≥780 ≥25 - - ≥340
- ≥340 ≥13 - ≥18 -
Tubular billet on the other 14-1-4103-86. The longitudinal samples. Annealing in air 1130-1150 °C (exposure for 1 hour)
20-25 ≥265 ≥640 ≥40 - - -

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
d4 Elongation after rupture
y The relative narrowing
KCU Toughness

Technological properties

Name The value
Macrostructure and pollution In the macrostructure of the billet is not allowed traces of shrinkage, podnasadochnogo looseness, delamination, subcortical bubbles, cracks, dark or light brown, non-metallic foreign microflute and foreign metal inclusions that are visible without using the magnifying devices. Alloy macrostructure for Central porosity, point heterogeneity, I segregated the square should not exceed 1 point for each type.