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Steel S285

Designation

Name The value
Designation GOST Cyrillic С285
Designation GOST Latin C285
Transliteration S285
The chemical elements -

Description

S285 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 norms В20 GOST 27772-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As
GOST 27772-88 ≤0.22 ≤0.05 ≤0.04 ≤0.65 ≤0.3 0.15-0.3 ≤0.3 The 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. In steel, an increase in the mass fraction of manganese to 0.085% is permissible. It is allowed to change the chemical composition at the manufacturer's choice: the Mn content is 0.80-1.10%, while the Si content is 0.05-0.15%; the C content ≤ 0.20% and Mn = 0.80-1.10, with a Si content of 0.15-0.30%. Mass fraction of residual (acid-soluble) aluminum in C285 steel with a manganese content up to 0.85% and silicon 0.15-0.30%, intended for sheet and broadband universal rolled products, should be at least 0.020%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % kJ/m2, кДж/м2
Plates and bars and universal broadband rental in the state of delivery (KCU-20 °C or after mechanical aging)
10-20 ≥265 ≥380 ≥23 ≥294
2-3.9 ≥285 ≥390 ≥17 -
4-10 ≥275 ≥390 ≥24 ≥294
Structural steel in delivery condition (KCU-20 °C or after mechanical aging)
10-20 ≥275 ≥390 ≥23 ≥294
4-10 ≥285 ≥400 ≥24 ≥294

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
kJ/m2 Toughness

Technological properties

Name The value
Weldability without restrictions

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