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Alloy 32NK (ЭП475)

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 To access the entire list

Designation

Name The value
Designation GOST Cyrillic 32НК
Designation GOST Latin 32HK
Transliteration 32NK
The chemical elements 32Ni
Name The value
Designation GOST Cyrillic ЭП475
Designation GOST Latin EP475
Transliteration EhP475
The chemical elements -

Description

Alloy 32NK used: for the manufacture of products with a polished surface, parts of complex shape that cannot be subjected to annealing to obtain a lower CTE; pipes.

Note

The alloy in the annealed condition with a minimum CTE of not more than 1.5·10-6 deg-1 in the temperature range from minus 60 to plus 100 °C.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10994-74
Sectional and shaped rolling В32 TU 14-1-4422-88, TU 14-11-245-88
Sheets and stripes В33 TU 14-1-4425-88
Bulls. Blanks. Slabs В31 TU 14-1-4743-89
Pipes steel and connecting parts to them В62 TU 14-159-215-92

Chemical composition

Standard C S P Mn Cr Si Ni Fe Co
TU 14-159-215-92 ≤0.03 ≤0.02 ≤0.02 ≤0.4 ≤0.1 ≤0.3 31.5-32.5 The rest 3.7-4.7
GOST 10994-74 ≤0.03 ≤0.015 ≤0.015 ≤0.4 ≤0.1 ≤0.3 31.5-33 The rest 3.7-4.7
Fe is the basis.
According to GOST 10994-74 the chemical composition is given for the alloy grade 32KN-VI.
According to TU 14-1-4743-89, TU 14-159-215-92, the chemical composition is given for the alloy 32KN-IL (EP475-IL), smelted by the vacuum induction melting method followed by electron-beam remelting. In the finished metal, the deviation from the chemical composition according to the nickel content is allowed to be + 0.50%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, %
Billets THAT 14-1-4743-89. Quenching in water from 830-870 °C (for longitudinal samples)
20-25 ≥245 ≥390 ≥30
Electrically welded steel pipes high corrosion resistance and cold-resistance for oil and gas pipelines, heat-treated in the delivery condition on the other 14-159-215-92
- ≥245 ≥390 ≥30

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
d5 Elongation after rupture

Technological properties

Name The value
Macrostructure and contamination The macrostructure of the workpiece on the other 14-1-4743-89 should not have shrinkage and looseness, cracks, inclusions, blistering, delamination, visible without using the magnifying devices. The defects allowed must not exceed: - for a point heterogeneity - 1.0 points; - the Central porosity - 1.0 points; exudation square - 1.0 points.

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