H6F4M (EP770)
For tools operating at elevated temperatures (cutting tool).
for the manufacture of dies
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Tool steel |
Die tool steel |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| TU 14-131-491-80 |
86.015–88.3 |
0.15–0.4 |
0.15–0.4 |
5.7–6.5 |
3.5–4 |
< 0.02 |
1.7–1.85 |
< 0.015 |
0.5–0.8 |
Information on suppliers
Critical point temperatures
| Ac1, K |
Ac3(Acm), K |
Ar1, K |
Mn, K |
|---|
| 820 |
860 |
750 |
260 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
Description of temperatures of critical points
| Parameter |
Units of measurement |
Description |
| Ac1 |
K |
|
| Ac3(Acm) |
K |
|
| Ar1 |
K |
|
| Mn |
K |
|