HV4F
Temperature T critical points steel HV4 °F: Ac1 = 750 — 760. It is not applicable for steel weldments malosklonna to temper brittleness: Hardness after annealing HB 10 -1 = 255 MPa.
cutters and milling in the processing at a low speed cutting of hard metals (rolls with hardened surface), engraving cutters with very hard work, piercing punches, and so on. d.
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Tool steel |
Alloy tool steel |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Cu, % |
Ni, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
W, % |
|---|
| GOST 5950-73 |
91.29–94.4 |
0.15–0.35 |
0.15–0.4 |
0.4–0.7 |
< 0.3 |
< 0.35 |
0.15–0.3 |
< 0.03 |
1.25–1.45 |
< 0.03 |
< 0.5 |
3.5–4.3 |
Information on suppliers
Technological Properties
| Weldability |
Propensity to temper brittleness |
|---|
| Not applicable for welded structures |
loathsome |
Critical point temperatures
Analogues
| USA |
Germany |
Japan |
Czech Republic |
Austria |
|---|
| F2 |
1.2453 (X130W5) |
SKS11 |
19714 |
K400 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
| W |
% |
Tungsten |
Designation of types of weldability
| Parameter |
Units of measurement |
Description |
| no limits |
|
Welding is performed without heating and without subsequent heat treatment |
| Boundedly welded |
|
Welding is possible with heating up to 100–120 °C and subsequent heat treatment |
| Difficult to weld |
|
For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing |
| Not applicable for welded structures |
|
|
Description of temperatures of critical points
| Parameter |
Units of measurement |
Description |
| Ac1 |
K |
|