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Alloy NK0,2JE

Designation

Name The value
Designation GOST Cyrillic НК0,2Э
Designation GOST Latin HK0,2E
Transliteration NK02Eh
The chemical elements NiCo0,2Э

Description

Alloy NK0,2JE used: for the manufacture of semi-finished pipes; tape thickness of 0.05−2.0 mm, used in electronics and other industries; cathodes and other parts of electronic devices; thin-walled tubes.

Note

The alloy NK0,2JE according to ST SEV 1257−78 match the alloy NiSi0,2o. Alloy NK0,2JE has a more narrow limit of the silicon content.

Standards

Name Code Standards
Pipes from non-ferrous metals and alloys В64 GOST 13548-77
Non-ferrous metals, including rare metals, and their alloys В51 GOST 19241-80, GOST 28873-90
Tapes В54 GOST 2170-73
Wire of non-ferrous metals and their alloys В74 GOST 2179-75

Chemical composition

Standard C S P Mn Si Ni Fe Cu As Al Zn Sn Sb Pb Bi Co Mg Cd
GOST 19241-80 ≤0.05 ≤0.003 ≤0.002 ≤0.04 0.15-0.25 The rest ≤0.07 ≤0.04 ≤0.002 ≤0.01 ≤0.005 ≤0.002 ≤0.002 ≤0.002 ≤0.002 ≤0.1 ≤0.05 ≤0.002
Ni is the basis.
According to GOST 19241-80 the sum of the mass fractions of nickel and cobalt is ≥ 99.40%. The mass of manganese is not more than 0,030%, sulfur is not more than 0,0050%, cadmium, antimony, bismuth, phosphorus and tin - not more than 0.0010% of each element in the alloy NK0.2E used for manufacturing thin-walled tubes. In the alloy obtained by vacuum melting, the mass fraction of zinc should be ≤ 0.0020%, the mass fraction of tin, lead, cadmium, arsenic, antimony, bismuth and phosphorus ≤ 0.0010% of each element (in this case the alloy has the designation HK0, 2EV).

Mechanical characteristics

σB, MPa d5, % d10
Tape supplied according to GOST 2170-73 (samples)
≥390 ≥35 ≥32
≥440 ≥12 ≥10
≥540 ≥3 ≥2

Description mechanical marks

Name Description
σB Limit short-term strength
d5 Elongation after rupture
d10 Elongation after rupture

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