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Alloy ЛК4

Designation

Name The value
Designation GOST Cyrillic ЛК4
Designation GOST Latin LK4
Transliteration LK4
The chemical elements ЛCo4

Description

Alloy ЛК4 used: for the production of cast bar billets (LPZ), intended for subsequent remelting and casting parts of aviation technology.

Note

The heat-resistant cast alloy on cobalt basis.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 OST 1 90127-85

Chemical composition

Standard C S P Mn Cr Si Ni Fe Mo W Co
OST 1 90127-85 0.15-0.25 ≤0.025 ≤0.025 ≤0.6 25-28 ≤0.5 3-3.75 ≤1.5 4.5-5.5 ≤0.5 ≥58
Co is the basis.
According to OST 1 90127-85 the chemical composition is given for the alloy LK4. In the alloy, in agreement with the consumer, the mass fraction of carbon in the range 0.20-0.30% is allowed.

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