Steel S390

Designation

Name The value
Designation GOST Cyrillic С390
Designation GOST Latin C390
Transliteration S390
By chemical elements -

Description

S390 steel is used: for the manufacture of hot-rolled structural shapes (angles, I-beams, channels), sheet, universal broadband rental and roll-formed profiles designed for construction of steel structures with welded and other connections.

Standards

Name Code Standards
Classification, nomenclature and General rules В20 GOST 27772-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As V
GOST 27772-88 ≤0.18 ≤0.04 ≤0.035 1.2-1.6 ≤0.4 ≤0.6 ≤0.3 Rest ≤0.3 0.015-0.025 ≤0.08 0.07-0.12
Fe is the basis.
According to GOST 27772-88, the mass fraction of arsenic does not exceed 0.15% in the smelting of steel from Kerch ore, while the mass fraction of phosphorus should not be more than 0.030%. At the request of the consumer in steel, the mass fraction of phosphorus should not be more than 0.030%, and sulfur - not more than 0.035%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2
Plates and wide universal rental in the state of delivery (KCU-70 °C)
4-50 ≥390 ≥540 ≥20 ≥294

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
KCU Toughness

Technological properties

Name The value
Weldability without restrictions