Alloy 47NKHR

Designation

Name The value
Designation GOST Cyrillic 47НХР
Designation GOST Latin 47HXP
Transliteration 47NHR
By chemical elements 47NiCrHg

Description

Alloy 47NKHR used: For vacuum junctions of items of electronic equipment with glass C90−1, С93−2, С93−4, С94- 1, С95−2, etc.

Note

Alloy with an average value of CTE.
Alloy with a CTE (8,5−11,0)·10-6 deg-1 in the temperature range from -70 to + 330 °C.

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 10994-74
Tape В34 GOST 14080-78
Wire, steel, alloy В73 GOST 14081-78
Bars and shapes В32 GOST 14082-78, TU 14-11-245-88
Blanks. Of the workpiece. Slabs В31 TU 14-1-3904-84

Chemical composition

Standard C S P Mn Cr Si Ni Fe B
GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 ≤0.4 4.5-6 ≤0.3 46-48 Rest ≤0.02
Fe is the basis.

Mechanical properties

σU, MPa d4
Cold-rolled strips of alloy grade according to GOST 47NKHR 14080-78 on delivery
490-610 ≥20
≤930 -

Description mechanical marks

Name Description
σU Limit short-term strength
d4 Elongation after rupture

Physical characteristics

Temperature r, kg/m3 a, 10-6 1/°C
20 8200 -
-100 - 88
-80 - 88
-60 - 88
-40 - 87
-20 - 85
100 - 87
200 - 91
300 - 91
400 - 101
500 - 115
600 - 125
700 - 133
800 - 140

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity
a The coefficient of linear expansion

Technological properties

Name The value
The temperature of the inflection point ≥330 °C