R9K5

Steel has a reduced tendency to overheat during quenching, lower viscosity, increased resistance to wear, reduced grindability.

For the processing of stainless steels and high-temperature alloys, as well as high-steerated steels.

Classification

Country Section Category
CIS, Russia, Ukraine Tool steel High speed tool steel

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Cr, % Cu, % Ni, % V, % P, % C, % S, % Mo, % W, %
GOST 19265-73 72.99–76.69 0.2–0.5 0.2–0.5 5–6 3.8–4.4 < 0.25 < 0.6 2.3–2.7 < 0.03 0.9–1 < 0.03 < 1 9–10

Information on suppliers

Physical characteristics

Temperature, °C \rho, \frac{kg}{m^3}
20 8890

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Hire GOST 19265-73 annealing 269
Hire GOST 19265-73 Hardening, average vacation 255

Critical point temperatures

Ac1, K Ar1, K
815 725

Analogues

USA
T12008

Standards

Standard Description
GOST 19265-73

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
\rho \frac{kg}{m^3} The density of the material

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ar1 K