9H1

For cold rolling rolls, stamps, punches, dies, punches, dererabat. tool.

working and supporting rolls for cold rolling of metals. Rail and structural steel work rolls, Large-size and wire crimping and rolling mills for hot rolling metal, exposed to intensive wear and work in conditions of minimal or mild shock. Supporting rollers composite sheet mills for hot rolling metal. Hallmarks, punches, Cold-punches, woodworking tools and other items.

Classification

Country	Section	Category
CIS, Russia, Ukraine	Tool steel	Alloy tool steel

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
GOST 5950-2000	95.16–97.4	0.25–0.45	0.15–0.4	1.4–1.7	< 0.03	< 0.3	< 0.4	< 0.15	< 0.03	0.8–0.95	< 0.03	< 0.2	< 0.2

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{P}$$, $$MPa$$	$$\epsilon_L$$, %	$$\psi$$, %	$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$	Treatment
Alloy					880	830	12	37	700	Accommodation Tempering 500 ° C

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Alloy	GOST 5950-73	annealing	229

Technological Properties

Weldability	Flake Susceptibility	Propensity to temper brittleness
Not applicable for welded structures	sensitive	loathsome

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K	Mn, K
745	860	700	270

Analogues

Germany	China	Czech Republic	Austria
1.2064 (85Cr7)	9CV2	19426	K201
85Cr7
102Cr6

Standards

Standard	Description
GOST 5950-2000	GOST

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
Cu	%	Copper
Ni	%	Nickel
V	%	Vanadium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum
W	%	Tungsten

Description of mechanical properties

Parameter	Units of measurement	Description
$$\sigma _{U}$$	$$MPa$$	Ultimate tensile strength
$$\sigma_{P}$$	$$MPa$$	Proportionality limit
$$\epsilon_L$$	%	Elongation at break (longitudinal)
$$\psi$$	%	Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$	$$\frac{J}{m^2}$$	Impact toughness

Designation of types of weldability

Parameter	Units of measurement	Description
no limits		Welding is performed without heating and without subsequent heat treatment
Boundedly welded		Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld		For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures

Description of temperatures of critical points

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