4H4VMFS (DI22, 40H4VMFS)

Another designation DI22. Temperature of critical points: Ac 1 = 830, Ac 3 (Ac m) = 910, Ar 3 (Arc m) = 750, Ar 1 = 670, Mn = 255. Hardness after heat treatment (GOST 5950−2000) HB 10 -1 = 241 MPa.

machine tools for high-speed stamping, landing on gorizontalnokovochnyh machines; inserts stamps for hot deformation of alloyed construction steels and superalloys hammers and crank presses; mold molding copper alloy

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 5950-2000 89.5–93.03 0.6–1 0.2–0.5 3.2–4 < 0.3 < 0.6 0.6–0.9 < 0.03 0.37–0.44 < 0.03 1.2–1.5 0.8–1.2

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Metal rolling 1700 1500 440 Hardening of 1050-1070 ° C, the oil, leave 620-630 ° C, 560-580 ° C and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 5950-73 heat-treated 241

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K Mn, K
830 910 750 670 255

Analogues

USA Germany Japan
H12 1.2567 (30WCrV17-2) SKD62

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
Mo % Molybdenum
W % Tungsten

Description of mechanical properties

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

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K
Ar3(Arcm) K
Ar1 K
Mn K