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Alloy 97NL (ЭИ996)

Designation

Name The value
Designation GOST Cyrillic 97НЛ
Designation GOST Latin 97HL
Transliteration 97NL
The chemical elements 97Ni
Name The value
Designation GOST Cyrillic ЭИ996
Designation GOST Latin EI996
Transliteration EhI996
The chemical elements -

Description

Alloy 97NL usedfor producing the tape, sanded rods (silverfish) and wire for the manufacture of current-carrying and weight-elastic sensing elements Aviapribor and other devices operating at temperatures up to +300 °C.

Note

Alloy precipitation hardening corrosion resistant with a temporary resistance 1570−1865 MN/m2 (160−190 kg/mm2), with the normal elasticity modulus 196000−206000 MN/m2 (20000−21000 kg/mm2) and low specific resistivity ≤0.35 Ω·mm2/m.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10994-74
Sectional and shaped rolling В32 TU 14-1-436-72, TU 14-11-245-88

Chemical composition

Standard C S P Mn Si Ni Fe Cu Al Be
TU 14-1-436-72 ≤0.03 ≤0.01 ≤0.01 ≤0.3 ≤0.2 The rest ≤0.5 ≤0.1 ≤0.3 2.1-2.5
Ni is the basis.
According to TU 14-1-436-72, the chemical composition is given for the 97NL-VI alloy (EI996).

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d d10 HRC HRB
Tape on the other 14-1-436-72 after quenching in water from 1050-1070 °C
≥393 ≥785 - ≥30 - ≤90
Tape on the other 14-1-436-72 after quenching in water from 1050-1070 °C and the dispersion hardening at 510±10 °C (extract of 1.5-2.0 CH)
≥687 ≥1393 - ≥3 ≥50 -
Tape on the other 14-1-436-72 after quenching in water from 1050-1070 °C, 35% cold working and dispersion hardening at 510±10 °C (aging of 1.0-1.5 h)
≥1520 ≥1766 - ≥3 ≥50 -
Wire cold-drawn at THAT 14-1-436-72 in the state of delivery: ø>1.5 mm after quenching with posleduyuschaya, ø≤1,5 mm magcaisa after heat treatment in a continuous furnace in the environment of hydrogen with subsequent deformation. The degree of deformation of the wire (shot peening) ø=4,1-7,0 mm is 60-20%, ø≤4.0 mm - 70-80% and polished bars ø=4,0-10,0 in the state of delivery on the other 14-1-436-72 after quenching with subsequent deformation of up to 35%
- ≥981 ≥7 - - -
Wire cold-drawn at THAT 14-1-436-72 in the state of delivery: ø>1.5 mm after quenching with posleduyuschaya, ø≤1,5 mm magcaisa after heat treatment in a continuous furnace in the environment of hydrogen with subsequent deformation. The degree of deformation of the wire (shot peening) ø=4,1-7,0 mm is 60-20%, ø≤4.0 mm - 70-80% and polished bars ø=4,0-10,0 in the state of delivery on the other 14-1-436-72 after quenching with subsequent deformation of up to 35% + of the Dispersion hardening at 510±10 °C (endurance 2.0 hours)
- ≥1766 ≥4 - - -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d Elongation after rupture
d10 Elongation after rupture
HRC Rockwell hardness (indenter diamond spheroconical)
HRB Rockwell hardness (indenter steel, spherical)

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