Alloy 21НКМТ (WPP-130)

Designation

Name The value
Designation GOST Cyrillic 21НКМТ
Designation GOST Latin 21HKMT
Transliteration 21NKMT
By chemical elements 21NiCoCuTe
Name The value
Designation GOST Cyrillic ВЭС-130
Designation GOST Latin BEC-130
Transliteration VEhS-130
By chemical elements ВЭPb-130

Description

Alloy 21НКМТ used: for the manufacture of elastic sensing elements of complex shape, brackets, rotors, and gyroscopes.

Note

Binary martensitic-austenitic alloy 21НКМТ-VI exceeds the level of strength and elasticity of 1.5−2.0 times (at the same binarnoi) traditional austenitic alloys of the type 45НХТ, MAS-22. Binarnye and high mechanical properties are achieved without the use of cold strain in the cross sections up to 100 mm.

Standards

Name Code Standards
Bars and shapes В32 TU 14-1-5366-98

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al Ti Mo Co Y
TU 14-1-5366-98 ≤0.03 ≤0.01 ≤0.01 ≤0.1 ≤0.3 ≤0.1 20.5-21.5 Rest ≤0.2 0.6-0.9 4.5-5.5 8.5-9.5 ≤0.01
Fe is the basis.
According to TU 14-1-5366-98, the yttrium content in the alloy 21KMT-VI is calculated.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, %
Rental (sheets and bars) after heat treatment of precision in the delivery condition on the other 14-1-5366-98
1300-1700 1400-1800 6-8

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