Steel S375

Designation

Name The value
Designation GOST Cyrillic С375
Designation GOST Latin C375
Transliteration S375
By chemical elements -

Description

Steel S375 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
GOST 27772-88 ≤0.15 ≤0.04 ≤0.035 1.3-1.7 ≤0.3 ≤0.8 ≤0.3 Rest ≤0.3 ≤0.008 ≤0.08
Fe is the basis.
According to GOST 27772-88 for steel smelted in electric furnaces, the content of N ≤ 0.012% is allowed. 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%. 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 after ageing mechanical)
10-20 ≥355 ≥490 ≥20 ≥294
2-3.9 ≥375 ≥510 ≥14 -
20-40 ≥335 ≥480 ≥20 ≥294
4-10 ≥375 ≥510 ≥20 ≥294
Structural steel in delivery condition (KCU after ageing mechanical)
10-20 ≥355 ≥490 ≥20 ≥294
20-40 ≥335 ≥480 ≥20 ≥294
4-10 ≥375 ≥510 ≥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