Steel KT-2

Designation

Name The value
Designation GOST Cyrillic КТ-2
Designation GOST Latin KT-2
Transliteration KT-2
By chemical elements CoTi-2

Description

Steel KT-2 applies: for the production of cold drawn wire used for the manufacture of springs are wound in the cold state and not subjected to hardening.

Standards

Name Code Standards
Steel wire medium and high carbon В72 GOST 9389-75, GOST 16135-70
Blanks. Of the workpiece. Slabs В31 TU 14-1-817-73

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 9389-75 0.86-0.91 ≤0.02 ≤0.02 0.2-0.4 ≤0.05 0.17-0.37 ≤0.05 Rest ≤0.1
Fe is the basis.
According to TU 14-1-817-73, the chemical composition is given for steel grade KT-2, smelted in electric furnaces. With the consumer's consent, copper content of up to 0.12% is allowed in individual fusions.

Technological properties

Name The value
Particularities of production of goods Harvesting on the other 14-1-817-73 is controlled to a depth of bezoperatsionnogo layer according to GOST 1763 on three samples taken from different bars. Depth bezoperatsionnogo layer should not exceed 1.0% of the sides of the square.