5HV2S (6HV2S)

Substitute 6ХВ2С. Steel does not apply to welded structures, is slightly inclined to temper embrittlement. Flock sensitivity: sensitive. Hardness after annealing: HB 10 -1 = 229 — 255 MPa .

knives for cold metal cutting, thread rolling dies, punches and crimping dies for cold work dies of complex shape, working with high shock loads.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % V, % P, % C, % S, % Mo, % W, %
GOST 5950-73 93.09–95.9 0.8–1.1 0.15–0.45 0.9–1.2 < 0.3 < 0.35 < 0.3 < 0.03 0.45–0.55 < 0.03 < 0.3 1.8–2.3

Information on suppliers

Physical characteristics

Temperature, °C $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 0.3
100 0.462
200 0.42
300 0.462
500 0.69
600 0.655
800 1.08
900 0.832 1.15
1000 0.752

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
Metal rolling 1470 1290 10 30 230 Tempering 880 ° C, oil, leave 500 ° C, 2 h

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy annealing 229–255

Technological Properties

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

Critical point temperatures

Ac1, K Ac3(Acm), K Mn, K
775 860 295

Analogues

Germany USA France United Kingdom European Union Italy Spain Poland Czech Republic Austria
1.2542 S1 55WC20 BS1 1.255 55WCrV8KU 45WCrSi8 NZ3 19733 K455

Standards

Standard Description
GOST 5950-73

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
$$c\cdot 10^{-3}$$ $$\frac{J}{kg\cdot K}$$ The specific heat of the material (range 20°C–T)
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

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(Acm) K
Mn K