5H3V3MFS (DI23)

Another designation DI23. Temperature of critical points: Ac1 = 780, Ac3 (Acm) = 920, Ar3 (Arcm) = 725. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 229 — 241 MPa .

for heavy duty press tools (matrices, piercing and forming punches, etc.); Instrument landing on gorizontalnokovochnyh machines and inserts stressed structures stamps for hot deformation volume alloyed structural steels and heat resistant alloys at hot deformation alloy structural steels and superalloys

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, % Nb, % Mo, % W, %
GOST 5950-2000 87.57–91 0.5–0.8 0.2–0.5 2.5–3.2 < 0.3 < 0.4 1.5–1.8 < 0.03 0.45–0.52 < 0.03 0.05–0.15 0.8–1.1 3–3.6

Information on suppliers

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
Grade 15 1680 1500 8 38 250 Hardening 1130 ° C, oil, and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 5950-73 annealing 229–241

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K
780 920 725

Analogues

Standards

Standard Description
GOST 5950-2000 GOST

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
Nb % Niobium
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

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K
Ar3(Arcm) K