Steel CT-3

Designation

Name	The value
Designation GOST Cyrillic	КТ-3
Designation GOST Latin	KT-3
Transliteration	KT-3
By 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
Blanks. Of the workpiece. 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	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
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.