Alloy ЧС70

Designation

Name The value
Designation GOST Cyrillic ЧС70
Designation GOST Latin ChC70
Transliteration ChS70
By chemical elements ЧPb70

Description

Alloy ЧС70 used: for the production of cast bar billets (LPZ), intended for subsequent remelting and casting of gas turbine components.

Note

High-temperature Nickel-based alloy.

Standards

Name Code Standards
Bars В55 TU 1-809-1025-98

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As Al B Ti Mo Sb Pb Bi Nb W O Zr Co Y
TU 1-809-1025-98 0.06-0.12 ≤0.008 ≤0.008 ≤0.3 15-16.7 ≤0.3 Rest ≤0.5 ≤0.07 ≤0.01 ≤0.0005 2.4-3.2 0.015-0.02 4.2-5 1.5-2.5 ≤0.0005 ≤0.001 ≤5.0E-5 0.1-0.3 4.5-6 ≤0.003 ≤0.05 10-11.5 ≤0.05
Ni is the basis.
According to TU 1-809-1025-98, the chemical composition is given for the alloy grade ChS70-VI.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, %
Cast rod stock (LPZ). Alloy ЧС70-VI. Heating up to 1160-1180 °C, exposure 3 hours, cooling at a speed of 3-15 °C/min to 1050 °C, then air cooling or Heating to 1040-1060 °C, exposure to 4 hrs, air cooling or Heating to 840-860 °C, exposure time of 16-20 h, air cooling
≥735 ≥833 ≥2.5
≥490 ≥589 ≥7

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