Steel АСЦ30ХМ

Designation

Name	The value
Designation GOST Cyrillic	АСЦ30ХМ
Designation GOST Latin	ACTs30XM
Transliteration	ASTs30HM
By chemical elements	-

Description

АСЦ30ХМ steel is used: for the manufacture of fasteners (bolts, nuts); stressed parts in the automobile and tractor industry (worms steering).

Note

Alloy structural steel.

Standards

Name	Code	Standards
Bars and shapes	В32	TU 14-1-2588-78

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Mo	Pb	Ca
TU 14-1-2588-78	0.27-0.33	0.03-0.07	≤0.035	0.5-0.8	0.8-1.1	0.17-0.37	≤0.3	Rest	0.15-0.25	0.15-0.3	≥0.06

Fe is the basis.
According to TU 14-1-2588-78, the calcium content is calculated. In finished rolled products, the calcium content is guaranteed by the production technology and should not be less than 0.0010%. In the finished rolled products, deviations in chemical composition are allowed with respect to all specifications of the technical specification: carbon ± 0.010%, silicon ± 0.020%, manganese ± 0.020%, chromium -0.020 / + 0.050%, nickel ± 0.030%, molybdenum - 0.010 / + 0.020%, for sulfur ± 0.0050%, for phosphorus + 0.5050%, for lead -0.020%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Bars hot rolled, turned on the other 14-1-2588-78. Quenching in oil with 860-880 °C + Vacation at 520-570 °C, air cooling
	≥736	≥883	≥12	≥981

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
KCU	Toughness

Technological properties

Name	The value
Macrostructure and pollution	In the macrostructure of steel on the other 14-1-2588-78 should not be shrinkage porosity, foreign inclusions and slag. Exudation square should not exceed 2 points and Pousada liquation - 1 points.
Microstructure	The size of austenitic grain in the steel in the delivery state on the other 14-1-2588-78 must be at least 5 numbers according to GOST 5639. The microstructure of the steel after heat treatment, must be ferrite-pearlite and to meet agreed-upon standards for steel grade AS30KHM.
Particularities of production of goods	Bars on the other 14-1-2588-78 are supplied after annealing with the hardness 146-223 NV.