Steel 4
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 | 4 |
| Designation GOST Latin | 4 |
| Transliteration | 4 |
| The chemical elements | 4 |
Description
The steel 4 is used: for the manufacture of rough locomotive tires increased hardness and operational stability for freight and shunting locomotives; solid-rolled rings for different purposes.
Note
Steel bandage.
Standards
| Name | Code | Standards |
|---|---|---|
| Bandages. Wheels. Axes | В41 | GOST 398-2010, TU 0941-096-01124323-2007 |
| Sectional and shaped rolling | В32 | OST 1 92049-76 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Mo |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TU 0941-096-01124323-2007 | 0.65-0.75 | ≤0.02 | ≤0.03 | 0.6-0.9 | 0.2-0.6 | 0.22-0.45 | - | The rest | - | ≤0.03 | - |
| GOST 398-2010 | 0.65-0.75 | ≤0.02 | ≤0.03 | 0.6-0.9 | 0.2-0.6 | 0.22-0.45 | ≤0.25 | The rest | ≤0.3 | ≤0.15 | ≤0.08 |
Fe is the basis.
According to TU 0941-096-01124323-2007 the mass fraction of oxygen should not exceed 40 ppm. The mass fraction of hydrogen in liquid steel before casting should not exceed 0.0002% (2.0 ppm).
According to GOST 398-2010 the total share of sulfur and phosphorus in steel should not exceed 0.040%. The total content of chromium and nickel in the steel should be at least 0.30%. In the bandages, the maximum deviations in the chemical composition are permissible: carbon + 0.030 / -0.020, manganese + 0.050 / -0.030, silicon + 0.030 / -0.020, chromium +0.020, vanadium + 0.010%, phosphorus +0.0050% , in the sulfur +0.0050%. The mass fraction of hydrogen in liquid steel should not exceed 0.00020%.
According to TU 0941-096-01124323-2007 the mass fraction of oxygen should not exceed 40 ppm. The mass fraction of hydrogen in liquid steel before casting should not exceed 0.0002% (2.0 ppm).
According to GOST 398-2010 the total share of sulfur and phosphorus in steel should not exceed 0.040%. The total content of chromium and nickel in the steel should be at least 0.30%. In the bandages, the maximum deviations in the chemical composition are permissible: carbon + 0.030 / -0.020, manganese + 0.050 / -0.030, silicon + 0.030 / -0.020, chromium +0.020, vanadium + 0.010%, phosphorus +0.0050% , in the sulfur +0.0050%. The mass fraction of hydrogen in liquid steel should not exceed 0.00020%.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|
| Bandages according to GOST 398-2010. Quenching with a separate heating + Vacation | ||||||
| - | ≥1050 | ≥9 | ≥12 | ≥1960 | 320-380 | |
| Ring forged in OST 1 92049-76. Quenching in warm water (30-60 °C) with 890-920 °C (speed of 2.0-2.5 hours) + Vacation at 580-620 °C (exposure for 2.5-3.0 h), cooling in water | ||||||
| 25 | ≥660 | ≥835 | ≥10.5 | - | ≥882 | - |
| Heat hardened bandages in the state of delivery on the other 0941-096-01124323-2007 (NV bandages at a depth of 20 mm) | ||||||
| - | 1050-1270 | ≥9 | ≥12 | ≥2000 | 320-360 | |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| sT|s0,2 | Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB | Limit short-term strength |
| d5 | Elongation after rupture |
| y | The relative narrowing |
| kJ/m2 | Toughness |
