5H2MNF (DI32)

Another designation DI32. Temperature of critical points: Ac1 = 740, Ac3 (Acm) = 815, Ar3 (Arcm) = 730, Ar1 = 650, Mn = 210. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 255 MPa.

for large solid punches (diameter 600 mm) for punching forgings of structural steels and superalloys hammers and crank presses; clamping and molding inserts, typesetting and molding puasonov landing structural steels and superalloys gorizontalnokovochnyh machines; hot cutting knives

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, %
GOST 5950-2000 92.81–95.24 0.1–0.4 0.4–0.7 1.5–2 < 0.3 1.2–1.6 0.3–0.5 < 0.03 0.46–0.53 < 0.03 0.8–1.1

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
Round 15 1750 1500 10 40 550 Tempering Cooling oil

Brinell hardness number

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

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K Mn, K
740 815 730 650 210

Analogues

Germany
1.2744 (57NiCrMoV7-7)

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

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
Ar1 K
Mn K