Steel N50
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 | Н50 |
| Designation GOST Latin | H50 |
| Transliteration | N50 |
| The chemical elements | Н50 |
Description
Steel N50 is used: for the manufacture of rails type R18 and R24 designed for installation on the Railways narrow gauge.
Note
Steel for the manufacture of rails is made with a degree of deoxidation SP (quiet) or SS (semi-killed).
Standards
| Name | Code | Standards |
|---|---|---|
| Rails. Lining. Lining. Crutches | В42 | GOST 5876-82, GOST 6368-82 |
Chemical composition
| Standard | C | S | P | Mn | Si | Fe | As |
|---|---|---|---|---|---|---|---|
| GOST 5876-82 | 0.4-0.55 | ≤0.045 | ≤0.04 | 0.5-1.4 | ≥0.13 | The rest | ≤0.15 |
Fe is the basis.
According to GOST 5876-82 in the steel smelted on the basis of Kerch ores, a mass fraction of sulfur and phosphorus is allowed up to 0.050%.
According to GOST 5876-82 in the steel smelted on the basis of Kerch ores, a mass fraction of sulfur and phosphorus is allowed up to 0.050%.
Mechanical characteristics
| Section, mm | σB, MPa | Brinell hardness number, MPa |
|---|---|---|
| Mechanical properties of steel N50sp or N50ps for rails type R18 and R24 according to GOST 5876-82 on delivery | ||
| ≥570 | ≥170 | |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| σB | Limit short-term strength |
