Designation
Name |
The value |
Designation GOST Cyrillic |
48ХН3М |
Designation GOST Latin |
48XH3M |
Transliteration |
48HN3M |
By chemical elements |
48CrН3Mo |
Description
48ХН3М steel is used: for the production of square hot rolled long products used to manufacture critical components with high mechanical properties.
Standards
Name |
Code |
Standards |
Bars and shapes |
В32 |
TU 14-1-4269-87, TU 14-1-4526-88 |
Physical characteristics
Temperature |
Е, HPa |
G, HPa |
r, kg/m3 |
l, W/(m · °C) |
a, 10-6 1/°C |
20 |
208 |
79 |
7830 |
- |
- |
100 |
204 |
79 |
7810 |
36 |
108 |
A description of the physical symbols
Name |
Description |
Е |
The normal elasticity modulus |
G |
Modulus of elasticity shear torsion |
r |
Density |
l |
Coefficient of thermal conductivity |
a |
The coefficient of linear expansion |
Technological properties
Name |
The value |
Weldability |
Limited weldability. Method of welding: SMAW, ESW. Necessary preheating and subsequent heat treatment. |
The temperature of forging |
Start - 1230 °C, the end - 780 °C. the cross Sections up to 100 mm are cooled in air, 101-350 mm - in the pit. |
Flock-sensitive sensitivity |
Excessively sensitive. |
Machinability |
In the annealed condition at 200-220 HB blower SB=640 MPa Kn TV.SPL.=0,8. |