Alloy 21НКМТ (WPP-130)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
21НКМТ |
| Designation GOST Latin |
21HKMT |
| Transliteration |
21NKMT |
| The chemical elements |
21NiCoCuTe |
| Name |
The value |
| Designation GOST Cyrillic |
ВЭС-130 |
| Designation GOST Latin |
BEC-130 |
| Transliteration |
VEhS-130 |
| The 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 |
| Sectional and shaped rolling |
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 |
The 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 characteristics
| Section, mm |
sT|s0,2, MPa |
σB, 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 |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
