Steel 35ХС2Н3М1ФА (VC-9)

Designation

Name The value
Designation GOST Cyrillic 35ХС2Н3М1ФА
Designation GOST Latin 35XC2H3M1FA
Transliteration 35HS2N3M1FA
By chemical elements 35CrС2Н3Mo1V
Name The value
Designation GOST Cyrillic ВКС-9
Designation GOST Latin BKC-9
Transliteration VKS-9
By chemical elements WCoС-9

Description

35ХС2Н3М1ФА steel is used: for the manufacture of critical heavily loaded parts, aircraft and aerospace industries.

Note

Steel high strength high quality.

Standards

Name Code Standards
Classification, nomenclature and General rules В20 OST 1 90005-91
Blanks. Of the workpiece. Slabs В31 TU 1-92-156-90

Chemical composition

Standard C Mn Cr Si Ni Fe V Mo
30-0.38 0.05-0.5 0.8-1.2 2.1-2.8 2.6-3 Rest 0.05-0.15 0.3-1.2
Fe is the basis.
The chemical composition of steel 35ХС2Н3М1ФА (VKS-9) is given under the patent of the Russian Federation No. 1316285 "High-strength structural steel". The steel should contain one element from the group of rare earth metals, including lanthanum and cerium - 0.001-0.05% and not less than one element from the group of alkaline earth metals, including magnesium and calcium, 0.001-0.05%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HRC
Forgings. Normalization at 890-910 °C, air cooling + Tempering in oil 940-960 °C + Vacation at 200-280 °C (extract 2-3 h), cooling in oil or air
≥1570 ≥1910 ≥9 ≥40 ≥490 -
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
- - 1910-2110 - - - 50.5-53

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HRC Rockwell hardness (indenter diamond spheroconical)