Steel rails are the backbone of rail systems, guiding vehicles safely while bearing enormous loads. Among the steels used in rail manufacturing, Q235B steel stands out for its balance of strength, ductility, and cost-efficiency. GNEE RAIL supplies Q235B steel rails suitable for light industrial tracks, crane rails, and mining rail systems, offering customization and technical support for various projects.
What is the ultimate strength of Q235B steel?
Q235B is a mild carbon structural steel commonly used in rails, fishplates, and supporting components. Its mechanical properties ensure reliability for low- to medium-load applications.
| Property | Value | Unit | Notes |
|---|---|---|---|
| Yield Strength | ≥235 | MPa | Begins permanent deformation |
| Ultimate Tensile Strength | 370–500 | MPa | Maximum stress before fracture |
| Elongation | ≥26 | % | Measures ductility and flexibility |
| Hardness | 38–47 | HB | Brinell hardness, moderate wear resistance |
| Carbon Content | 0.12–0.22 | % | Low carbon content ensures weldability |
GNEE RAIL's Q235B steel rails maintain these properties consistently, ensuring that components like light crane rails and industrial track rails perform reliably under daily loads.
Can Q235B Steel Be Used for Crane Rails or Mining Rails?
Yes, Q235B steel is suitable for light-duty crane rails, temporary industrial tracks, and mining transport systems where load requirements are moderate. For example, GNEE RAIL's 22kg/m Q235B steel rail supports up to 10 tons per wheel and is widely used in:
- Warehouse material handling rails
- Small-span gantry crane tracks
- Mine trolley lines in confined tunnels
| Rail Type | Material | Weight (kg/m) | Max Load | Application |
|---|---|---|---|---|
| 22kg Light Rail | Q235B | 22.3 | 10 tons | Warehouse & mining tracks |
| 12kg Mining Rail | Q235B | 12 | 5–6 tons | Temporary or small transport lines |
| JIS 22kg Rail | Q235B | 22.3 | 10 tons | Light crane & industrial use |
GNEE RAIL also offers customization, including pre-drilled bolt holes, surface treatments, and rail bending, ensuring that Q235B steel rails can meet specific project requirements.
How Does Q235B Compare to Q355 Steel in Strength?
When selecting materials for rail projects, engineers often compare Q235B with higher-strength alternatives such as Q355.
| Property | Q235B Steel | Q355 Steel | Difference |
|---|---|---|---|
| Yield Strength | ≥235 MPa | ≥355 MPa | Q355 is ~51% stronger at yield point |
| Ultimate Strength | 370–500 MPa | 470–630 MPa | Q355 can handle higher maximum loads |
| Elongation | ≥26% | ≥20% | Q235B is more ductile |
| Typical Use | Light rails, crane tracks ≤10 tons | Heavy rails, high-load applications | Depends on operational load |
GNEE RAIL provides both Q235B and Q355 rails, helping clients choose materials based on load requirements, environment, and cost efficiency.
As a professional rail fastener supplier, GNEE RAIL can provide different standard steel rail such as GB,American, BS, UIC, DIN, JIS, Australian and South Africa which used in railway lines, cranes and coal mining.
| Standard | Sepc. | Material Typical Grade |
| UIC860 | UIC54 | 700,900A,900B |
| UIC60 | ||
| EN13674.1 | 5.00E+02 | R200,R350HT,R260Mn,R35LHT,R320Cr,R370CrHT |
| 5.40E+02 | ||
| 6.00E+02 | ||
| 6.00E+03 | ||
| BS-11-1985 | BS80A | 700,900A,900B |
| BS90A | ||
| BS100A | ||
| AREMA | 115RE | SS,HH,LA,IH |
| 136RE | ||
| ASCE60 | U71Mn | |
| ASCE85 | U71Mn | |
| GB 2585-2007 | 50kg/m | U71Mn |
| 60kg/m | U75V | |
| 75kg/m | ||
| TB/T2344-2012 | 50kg/m | U71Mn,U75V,U77MnCr |
| 60kg/m | U78CrV | |
| 75kg/m | ||
| GB 11264-1989 | 8kg/m | Q235 |
| 12kg/m | Q235 | |
| 15kg/m | 55Q, Q235 | |
| 18kg/m | 55Q, Q235 | |
| 22kg/m | 55Q, Q235 | |
| 24kg/m | 55Q, Q235 | |
| 30kg/m | 55Q, Q235 | |
| 38kg/m | 50Mn, U71Mn | |
| 43kg/m | 50Mn, U71Mn | |
| GB Crane rails | QU70 | U71Mn |
| QU80 | U71Mn | |
| QU100 | U71Mn | |
| QU120 | U71Mn |