R9M4K8-MP (DI102-MP)

Shaped cutters, drills, reamers, core drills, milling cutters (worm, trailer, disc, special), shaping cutters, shavers for processing high-strength steels and heat resisting steels and alloys.

Classification

Country Section Category
CIS, Russia, Ukraine Powder metallurgy High speed steel produced by powder metallurgy

Chemical composition

Standard Fe, % Si, % Mn, % Co, % Cr, % Cu, % Ni, % V, % P, % C, % S, % O, % Mo, % N, % W, %
GOST 28393-89 68.31–73.78 < 0.6 < 0.5 7.5–8.5 3–3.6 < 0.25 < 0.4 2.3–2.7 < 0.03 1.1–1.2 < 0.03 < 0.02 3.8–4.3 0.02–0.06 8.5–9.5

Information on suppliers

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Rod GOST 28393-89 annealing, hot rolling 285

Standards

Standard Description
GOST 28393-89

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
O % Oxygen
Mo % Molybdenum
N % Nitrogen
W % Tungsten