8H4V3M3F2 (EP570)

Temperature of critical points: Ac1 = 865, Ac3 (Acm) = 895, Ar1 = 720, Mn = 195. Hardness after annealing: HB 10 -1 = 255 MPa

for the production of thread rolling tools for cold rolling, roller shlitsenakatnyh; woodworking tools; knives truborazrubochnyh presses Guillotine and other scissors; punches and dies of cold volume deformation operated with operating pressures up to 2000−2100 MPa

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % V, % P, % C, % S, % Mo, % W, %
GOST 5950-73 85.09–88.55 0.15–0.4 0.15–0.4 3.5–4.5 1.9–2.5 < 0.03 0.75–0.85 < 0.03 2.5–3 2.5–3.2

Information on suppliers

Critical point temperatures

Ac1, K Ac3(Acm), K Ar1, K Mn, K
865 895 720 195

Standards

Standard Description
GOST 5950-73

Description of chemical elements

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

Description of temperatures of critical points

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