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Steel CT-3

Designation

Name The value
Designation GOST Cyrillic КТ-3
Designation GOST Latin KT-3
Transliteration KT-3
The chemical elements CoTi-3

Description

Steel CT-3 is used: for the production of square billets intended for rolling on the drawn wire used for the manufacture of springs are wound in the cold state and not subjected to hardening.

Standards

Name Code Standards
Bulls. Blanks. Slabs В31 TU 14-1-817-73

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
TU 14-1-817-73 0.95-1.04 ≤0.02 ≤0.02 0.2-0.4 ≤0.05 0.17-0.37 ≤0.05 The rest ≤0.1
Fe is the basis.
According to TU 14-1-817-73 the chemical composition is given for steel grade KT-3, 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
Features of production 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.

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