Alloy 95НИ (НР4)

Designation

Name The value
Designation GOST Cyrillic 95НИ
Designation GOST Latin 95HI
Transliteration 95NI
By chemical elements 95NiIr
Name The value
Designation GOST Cyrillic НР4
Designation GOST Latin HP4
Transliteration NR4
By chemical elements NiHg4

Description

Alloy 95НИ used: for the production of hot-rolled and forged bars (ø 21±0.5 mm), intended for the manufacture of cores of oxide cathodes vacuum materials magnetron type.

Note

Precision alloy with tantalum with low strength, but high ductility and workability during rolling, including in cold rolling.

Standards

Name Code Standards
Bars and shapes В32 TU 14-1-5090-91

Chemical composition

Standard C Mn Si Ni Mg Ta Re
TU 14-1-5090-91 ≤0.1 ≤0.1 ≤0.1 Rest ≤0.01 0.4-1 3.5-5
Ni is the basis.
According to TU 14-1-5090-91, the chemical composition is presented for the 95Ni-IL alloy with tantalum (HP4-IL), melted by a duplex process: vacuum-induction melting followed by electron-beam remelting. The mass fraction of gases should be no more than: oxygen - 0.015%, hydrogen - 0.0015%, nitrogen - 0.0010%. The content of gases is determined for a set of statistical data and is not a rejection sign.

Technological properties

Name The value
Macrostructure and pollution On the surface, and the ends of the bars are not allowed cracks, holes and tears. Allowed scratches and transverse risks, as well as other defects of a mechanical nature, not displaying the bars for minimum dimensions.