Steel 73Ц (M73C)
A4 steel
Steel 76F
76KhSF steel
Steel 76C (M76C)
78KhSF steel
Steel 90AF (E90AF)
Steel A1 (A0)
A2 steel
A3 steel
Steel 76VT (M76VT)
Steel wheel 1
Steel wheel 2
Steel wheel 3
Steel M75
Steel H50
OS Steel
PT70 steel
T60 steel
Steel 70 (M70)
Steel 2
Steel 3
3Gps steel
Steel 4
Steel 54 (M54)
5Gps steel
Steel 63 (K63)
Steel 68 (M68)
76T steel
Steel 73B (M73B)
Steel 73T (M73T)
Steel 73C (M73C)
Steel 74 (M74)
Steel 74T (M74T)
Steel 74C (M74C)
Steel 76 (M76)
Steel 76B (M76B)
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 73Ц |
| Designation GOST Latin | 73Ts |
| Transliteration | 73Ts |
| The chemical elements | 73Zn |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | М73Ц |
| Designation GOST Latin | M73Ts |
| Transliteration | M73Ts |
| The chemical elements | Mo73Zn |
Description
73Ц steel is used: for the manufacture of rails Ostryakova types OR75, OR65 and OR50, used in the construction of the top structure of a railway track.
Note
M73C — steel open-hearth rail with Zirconia.
Standards
| Name | Code | Standards |
|---|---|---|
| Rails. Lining. Lining. Crutches | В42 | GOST 9960-85, GOST 17507-85, GOST 17508-85, GOST 26168-84 |
Chemical composition
| Standard | C | S | P | Mn | Si | Fe | Zr |
|---|---|---|---|---|---|---|---|
| GOST 9960-85 | 0.67-0.78 | ≤0.04 | ≤0.035 | 0.75-1.05 | 0.18-0.45 | The rest | 0.001-0.05 |
Fe is the basis.
According to GOST 9960-85 the rails should be made of calm open-hearth steel, deoxidized in the ladle with complex deoxidizers without the use of aluminum or other deoxidizers, which form harmful non-metallic inclusions in steel.
The zirconium content in the range from 0.001% to 0.01% in steel is determined from the calculation of its input of not less than 80 grams per ton of liquid steel.
According to GOST 9960-85 the rails should be made of calm open-hearth steel, deoxidized in the ladle with complex deoxidizers without the use of aluminum or other deoxidizers, which form harmful non-metallic inclusions in steel.
The zirconium content in the range from 0.001% to 0.01% in steel is determined from the calculation of its input of not less than 80 grams per ton of liquid steel.
Mechanical characteristics
| Section, mm | σB, MPa | d5, % |
|---|---|---|
| Mechanical properties of steel for rails types OR75, OR65 and OR50 according to GOST 9960-85 on delivery | ||
| ≥900 | ≥5 | |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| σB | Limit short-term strength |
| d5 | Elongation after rupture |
