7HF

The temperature of the critical points of the 7XF alloy: Ac1 = 770, Ac3 (Acm) = 780, Ar3 (Arcm) = 740, Ar1 = 710. Hardness after annealing: HB 10 -1 = 229 MPa.

for the manufacture of woodworking tools

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % V, % P, % C, % S, %
GOST 5950-73 97.225–98.37 0.15–0.35 0.3–0.6 0.4–0.7 < 0.035 0.15–0.3 < 0.03 0.63–0.73 < 0.03

Information on suppliers

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K
770 780 740 710

Analogues

Germany
1.2327 (86CrMoV7)
62SiMnCr4
86CrMoV7

Standards

Standard Description
GOST 5950-73

Description of chemical elements

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

Description of temperatures of critical points

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