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Alloy 30NKD (30NKD-VI)

Alloy 36H Alloy 80HMV (80HMVX3) Alloy 58H (EI792) Alloy 52H (EI676; 52H-VI) Alloy 48NH (EI693) Alloy 47NHR Alloy 47NH (EI563) Alloy 47ND (47ND-VI) Alloy 47H3X Alloy 42NA-VI (EP333) Alloy 42H (EP318; 42NA) Alloy 40K27KhNM with tantalum Alloy 39H Alloy 38NKD (38NKD-VI) Alloy 36NH (EP713) Alloy 35NKT Alloy 35NKG (EK53) Alloy 34NKD Alloy 33HX3 (EP547) Alloy 33NK (33NK-VI) Alloy 32NKh3 (EP546) Alloy 32NKD (EI630A) Alloy 32NK (EP475) Alloy 31NH3G (EP545) Alloy 30NKD (30NKD-VI) Alloy 29NK (29NK-VI) Alloy 18KhTF Alloy 18KhMTF

Designation

Name The value
Designation GOST Cyrillic 30НКД
Designation GOST Latin 30HKD
Transliteration 30NKD
The chemical elements 30NiCoД
Name The value
Designation GOST Cyrillic 30НКД-ВИ
Designation GOST Latin 30HKD-BI
Transliteration 30NKD-VI
The chemical elements 30NiCoД-ВIr

Description

Alloy 30NKD used: for the manufacture of vacuum-tight junctions with refractory glass stamps C38−1 and for certain types of junctions with glass stamps C40−1.

Note

Alloy with a low CTE value.
Alloy with a CTE (to 3.3−4.6)·10-6 deg-1 in the temperature range from minus 60 to plus 400 °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

Chemical composition

Standard C S P Mn Si Ni Fe Cu Co
GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 ≤0.4 ≤0.3 29.5-30.5 The rest 0.3-0.5 13-14.2
Fe is the basis.

Mechanical characteristics

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

Description mechanical marks

Name Description
Section Section
σB Limit short-term strength

Physical characteristics

Temperature r, кг/м3 a, 10-6 1/°С
20 8200 -
-100 - 56
-80 - 55
-60 - 53
-40 - 51
-20 - 50
100 - 46
200 - 44
300 - 40
400 - 45
500 - 65
600 - 82
700 - 95
800 - 107

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity

Technological properties

Name The value
Frost resistance Tape x/K alloy 30NKD (30NKD-VI) according to GOST 14080-78 and wire cold-drawn according to GOST 14081-78 should be hardy to minus 70 °C.
Inflection Point Temperature ≥390 °C

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