8H4V2MFS2 (EP761, 80H4V2MFS2)

Matrices and punches of cold volume deformation dies, thread rolling rollers.

for matrices and stamps puasonov cold volume deformation experiencing during the operation pressure up to 2300 MPa, thread rolling rollers

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % V, % P, % C, % S, % Mo, % W, %
GOST 5950-2000 85.94–89.1 1.7–2 0.2–0.5 4.5–5.1 < 0.3 < 0.4 1.1–1.4 < 0.03 0.8–0.9 < 0.03 0.8–1.1 1.8–2.3

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma_{P}$$, $$MPa$$ Treatment
Alloy 2700–2800 Hardening and tempering

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 5950-73 annealing 255

Critical point temperatures

Ac1, K Ac3(Acm), K Ar1, K Mn, K
840 880 785 150

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
$$\sigma_{P}$$ $$MPa$$ Proportionality limit

Description of temperatures of critical points

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