AS12HN

Lead-alloyed steel.

In the automotive industry — leverage gear, pawls crankshaft flanges oil pump, thrust nut, clutch.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Structural steel	Improved machinability structural steel

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	Pb, %	P, %	C, %	S, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	Pb, %	P, %	C, %	S, %
GOST 1414-75	96.71–98.39	0.17–0.37	0.3–0.6	0.4–0.7	< 0.3	0.5–0.8	0.15–0.3	< 0.035	0.09–0.15	< 0.035

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	7860

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Workpiece	GOST 1414-75	< 100			650	450	900	10	Tempering 900-920 ° C, oil, Holidays 150-180 ° C, air

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Alloy	GOST 1414-75	cold-work	269

Standards

Standard	Description
Standard	Description
GOST 1414-75

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Cu	%	Copper
Ni	%	Nickel
Pb	%	Lead
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\rho$	$\frac{kg}{m^3}$	The density of the material

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\sigma_{P}$	$MPa$	Proportionality limit
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness