U11 (U11A)

Hardness Y11 after annealing: HB 10 ^-1 = 207 MPa. The temperature of the critical points of the alloy Ac ₁ = 730, Ac ₃ (Ac _m) = 810, Ar ₁ = 700, Mn = 200

Hand taps, rasps, needle files, saws for woodworking, dies for cold stamping, axes, calibers simple form and the downgrading of accuracy

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Tool steel	Carbon Tool Steel

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	P, %	C, %	S, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	P, %	C, %	S, %
GOST 1435-99	97.452–98.6	0.17–0.33	0.17–0.33	< 0.2	< 0.25	< 0.25	< 0.03	1.06–1.13	< 0.028

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	7810

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\epsilon_L$ , %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\epsilon_L$ , %	Treatment
Tape		0.08–3		annealing	750	10

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Alloy		annealing	207

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K	Mn, K
Ac₁, K	Ac₃(Ac_m), K	Ar₁, K	Mn, K
730	810	700	200

Analogues

USA	Germany	Japan	France	United Kingdom	Italy	Spain	Sweden	Bulgaria	Hungary	Poland	Romania	Austria
USA	Germany	Japan	France	United Kingdom	Italy	Spain	Sweden	Bulgaria	Hungary	Poland	Romania	Austria
G51320	1.1645 (C105W2)	SK3	C105E2U	BW1B	C100KU	C102	1880	U11	S111	N10	OSC11	BOHLERK990

Standards

Standard	Description
Standard	Description
GOST 1435-99

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
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
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\epsilon_L$	%	Elongation at break (longitudinal)

Description of temperatures of critical points

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
Ac₁	K
Ac₃(Ac_m)	K
Ar₁	K
Mn	K