12ГНДЮ steel is used: for the manufacture of calibrated bars intended for the manufacture of products by cold deformation; various axially symmetric products made by the rotary extractor of the pipe blanks.

Standards

Name	Code	Standards
Bars and shapes	В32	GOST 7417-75, TU 14-1-4885-90

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Al
TU 14-1-4885-90	0.1-0.14	≤0.025	≤0.025	0.6-0.9	≤0.2	0.3-0.5	0.6-0.9	Rest	0.45-0.8	0.02-0.07

Fe is the basis.
According to TU 14-1-4885-90, the maximum deviations in chemical composition in finished steel shall correspond to C ± 0.010%, Si ± 0.10%, Mn ± 0.10%, Ni ± 0.050%, Cr +0.050%.

Mechanical properties

Section, mm	σ_U, MPa
The grooved bars as supplied on the other 14-1-4885-90
	≥441

Description mechanical marks

Name	Description
σ_U	Limit short-term strength

Technological properties

Name	The value
Microstructure	Microstructure of steel on the other 14-1-4885-90 should consist of ferrite grains with a size no larger than number 7 to GOST 5639, poloschatosti ferrite-pearlite structures to not more than 4 points according to GOST 5640.

Steel 12ГНДЮ

Designation

Description

Standards

Chemical composition

Mechanical properties

Description mechanical marks

Technological properties

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