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Alloy 47NKH (ЭИ563)

Designation

Name The value
Designation GOST Cyrillic 47НХ
Designation GOST Latin 47HX
Transliteration 47NH
The chemical elements 47NiCr
Name The value
Designation GOST Cyrillic ЭИ563
Designation GOST Latin EI563
Transliteration EhI563
The chemical elements -

Description

Alloy 47NKH used: for the manufacture of pipes; a vacuum-tight junctions with thermometric glass brands 16Ш, С72−4, etc.

Note

Alloy with an average value of CTE.
Alloy with a CTE (8,0−9,0)·10-6 deg-1 in the temperature range from -70 to + 450 °C.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10994-74
Tapes В34 GOST 14080-78
Steel alloy wire В73 GOST 14081-78
Sectional and shaped rolling В32 GOST 14082-78, TU 14-11-245-88
Bulls. Blanks. Slabs В31 TU 14-1-3719-84, TU 14-1-3904-84

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 0.3-0.6 0.7-1 ≤0.3 46-47 The rest ≤0.2
Fe is the basis.

Mechanical characteristics

Section, mm d5, %
Cold-rolled steel strip according to GOST 14080-78 on delivery
0.1-2.5 ≤930

Description mechanical marks

Name Description
Section Section
d5 Elongation after rupture

Physical characteristics

Temperature r, кг/м3 a, 10-6 1/°С
20 8200 -
100 - 86
200 - 84
300 - 83
400 - 81
500 - 92
600 - 100
700 - 111
800 - 119

A description of the physical symbols

Name Description
Е The normal elasticity modulus
R UD. the resistivity

Technological properties

Name The value
Macrostructure and contamination The macrostructure of billets on the other 14-1-3719-84 should not have shrinkage porosity, bubbles, cracks, delamination, visible without using the magnifying devices. The defects allowed must not exceed: - for a point heterogeneity - 2 points; - for Central porosity - 2 points; - phase separation in the square - 2 points.
Inflection Point Temperature ≥400 °C
Temperature coefficient of linear expansion The billet according to TU 14-1-3719-84 to determine the CTE is subjected to heat treatment regime: Quenching in VDU from 810±10 °C to + Leave samples at 350±10 °C (aging for 1 h), cooling with the furnace or container. ACP CTE, 10-6 1/°C in the temperature range shall be: - 20÷300 °C - 7,2-8,1; - 20÷400 °With - 7,1-8,2; - 20÷450 °With - 7,8-8,7; - 20÷500 °With and 8.5 and 9.4. The definition of CTE is made in accordance with GOST 14080.

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