Steel S590K

Designation

Name The value
Designation GOST Cyrillic С590К
Designation GOST Latin C590K
Transliteration S590K
By chemical elements -

Description

S590K 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 Al V Mo
GOST 27772-88 ≤0.14 ≤0.035 ≤0.035 0.9-1.4 0.2-0.5 0.2-0.5 1.4-1.75 Rest ≤0.3 0.02-0.03 0.05-0.1 0.05-0.1 0.15-0.25
Fe is the basis.
According to GOST 27772-88, a part of the nickel's mass fraction of cobalt can be replaced in steel. When smelting steel from the Kerch ore, the mass fraction of arsenic does not exceed 0.15%, while the mass fraction of phosphorus should not be more than 0.030%. When processing with synthetic slag of steel S590K with a mass fraction of sulfur not more than 0.015%, the mass fraction of residual titanium is allowed up to 0.040% and the mass fraction of copper is up to 0.50%; at a mass fraction of sulfur of more than 0.15%, the mass fraction of titanium is allowed up to 0.030%. In the manufacture of steel by the method of electroslag remelting, the letter W: C590KH is added to the designation of steel, the mass fraction of sulfur should not be more than 0.010%, phosphorus - not more than 0.020%.

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)
10-40 ≥590 ≥685 ≥14 ≥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