5HNVS
The temperature of the critical points of steel 5HNS: Ac1 = 760, Ac3 (Acm) = 800, Mn = 250. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 255 MPa.
for steam-hammer dies and pneumatic hammers with falling parts weighing up to 3 tons
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Tool steel |
Alloy tool steel |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Cu, % |
Ni, % |
P, % |
C, % |
S, % |
W, % |
|---|
| GOST 5950-2000 |
94.04–96.1 |
0.6–0.9 |
0.3–0.6 |
1.3–1.6 |
< 0.3 |
0.8–1.2 |
< 0.03 |
0.5–0.6 |
< 0.03 |
0.4–0.7 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$\alpha\cdot 10^{6}$$, $$K^{-1}$$ |
|---|
| 100 |
12.5 |
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
Treatment |
|---|
| Round |
|
14 |
|
|
1305 |
1030 |
Tempering Cooling oil |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
GOST 5950-73 |
annealing |
255 |
Critical point temperatures
| Ac1, K |
Ac3(Acm), K |
Mn, K |
|---|
| 760 |
800 |
250 |
Analogues
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| W |
% |
Tungsten |
Description of physical characteristics
| Parameter |
Units of measurement |
Description |
| $$\alpha\cdot 10^{6}$$ |
$$K^{-1}$$ |
Coefficient of thermal (linear) expansion (range 20°C–T) |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\sigma_{P}$$ |
$$MPa$$ |
Proportionality limit |
Description of temperatures of critical points
| Parameter |
Units of measurement |
Description |
| Ac1 |
K |
|
| Ac3(Acm) |
K |
|
| Mn |
K |
|