5HNVS

The temperature of the critical points of steel 5HNS: Ac1 = 760, Ac3 (Acm) = 800, Mn = 250. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 255 MPa.

for steam-hammer dies and pneumatic hammers with falling parts weighing up to 3 tons

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % P, % C, % S, % W, %
GOST 5950-2000 94.04–96.1 0.6–0.9 0.3–0.6 1.3–1.6 < 0.3 0.8–1.2 < 0.03 0.5–0.6 < 0.03 0.4–0.7

Information on suppliers

Physical characteristics

Temperature, °C α⋅106, K−1
100 12.5

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers σU, MPa σP, MPa Treatment
Round 14 1305 1030 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 Mn, K
760 800 250

Analogues

Germany
1.2713 (55NiCrMoV6)

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
P % Phosphorus
C % Carbon
S % Sulfur
W % Tungsten

Description of physical characteristics

Parameter Units of measurement Description
α⋅106 K−1 Coefficient of thermal (linear) expansion (range 20°C–T)

Description of mechanical properties

Parameter Units of measurement Description
σU MPa Ultimate tensile strength
σP MPa Proportionality limit

Description of temperatures of critical points

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