R12
For all types of cutting tools in the processing of carbon alloyed structural steels.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Tool steel |
High speed tool steel |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Co, % |
Cr, % |
Ni, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
W, % |
|---|
| GOST 19265-73 |
77.64–82.6 |
< 0.5 |
< 0.5 |
< 0.5 |
3.1–3.6 |
< 0.4 |
1.5–1.9 |
< 0.03 |
0.8–0.9 |
< 0.03 |
< 1 |
12–13 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\rho$$, $$\frac{kg}{m^3}$$ |
|---|
| 20 |
9190 |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
GOST 19265-73 |
annealing |
255 |
Critical point temperatures
| Ac1, K |
Ac3(Acm), K |
Ar1, K |
|---|
| 820 |
850 |
720 |
Analogues
| CIS, Russia, Ukraine |
|---|
| ЭП201 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Co |
% |
Cobalt |
| Cr |
% |
Chrome |
| 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 |
|
| Ac3(Acm) |
K |
|
| Ar1 |
K |
|