Specification of Steel Track Rail
Jan 20, 2026
Steel rails are engineered to meet the demands of different transport and industrial settings. At GNEE RAIL, we supply a wide selection of rail types-from standard railway sections to heavy-duty crane rails-each tailored for specific load, durability, and installation needs.Q235B steel is a low-carbon structural steel widely used in light and medium-duty industrial rails, crane tracks, and temporary transport lines. While its chemical and mechanical properties provide a solid foundation.
What Are the Standard Specifications of Q235B Steel?
Q235B steel meets GB/T 700-2006 standards, ensuring consistent yield and tensile strength suitable for industrial rail applications. Its key mechanical properties support moderate load-bearing requirements, while its ductility allows for easy welding and processing.
- Yield Strength: ≥235 MPa, providing sufficient resistance to deformation under typical industrial loads.
- Ultimate Tensile Strength: 370–500 MPa, ensuring rails can handle peak stress before failure.
- Elongation: ≥26%, offering flexibility and reducing risk of cracking.
- Hardness: 38–47 HB, giving moderate wear resistance suitable for light rails.
| Property | Q235B | Unit | Notes |
|---|---|---|---|
| Yield Strength | ≥235 | MPa | Beginning of plastic deformation |
| Ultimate Tensile Strength | 370–500 | MPa | Maximum stress before fracture |
| Elongation | ≥26 | % | Ductility under load |
| Hardness | 38–47 | HB | Wear resistance for industrial rails |
| Carbon (C) | 0.12–0.22 | % | Ensures weldability |
| Manganese (Mn) | 0.30–0.70 | % | Enhances toughness |
How Do Specifications Vary Across Different Standards?
Although the material is the same, rail profiles vary depending on regional standards, affecting height, base width, and head width, which are critical for installation and load capacity.
- GB rails provide a balanced profile for light to medium industrial applications, offering stability under moderate loads.
- JIS rails are compatible with compact crane tracks, with slightly reduced height but consistent head width.
- DIN rails offer thicker webs and base widths to support medium-duty operations.
- ASTM rails balance weight and profile dimensions for North American industrial environments.
| Rail Model | Standard | Height (mm) | Base Width (mm) | Head Width (mm) | Max Load |
|---|---|---|---|---|---|
| 22kg Rail | GB | 93.66 | 93.66 | 50.80 | 10 tons |
| 43kg Rail | GB | 122 | 122 | 60 | 20 tons |
| 22kg Rail | JIS | 93 | 93 | 50.5 | 10 tons |
| 50kg Rail | DIN | 125 | 125 | 65 | 25 tons |
| 60lb Rail | ASTM | 152 | 133 | 64 | 12 tons |
Frequently Asked Questions: 3 Common Questions About Q235 Steel
Can Q235 replace Q355 steel?
No. If a project requires a yield strength of 300 MPa or more, Q235 steel is not strong enough. Using it could lead to safety risks, such as deformation or fracture of the steel.
What types of Q235 material are available? How to choose?
Q235 is divided into grades A, B, C, and D. For everyday use, choose Q235B (suitable for normal temperatures). For low-temperature environments, use Q235D. Avoid Q235A (no impact test requirements, lower safety).
Can Q235 material be used for outdoor rail clamps?
Yes. But it is best to apply hot-dip galvanizing or anti-corrosion paint. This treatment will extend its service life.
Since 2008, GNEE RAIL has been supplying steel rails of different grades for more than 18 years, steel rails from GNEE is highly recommened in China and abroad.Wtih cutting edge equipment, GNEE produces high quality steel rails that meet with requirements of most countries. Standard rail, head hardened rail, heavy rail,light rail,crane rail and other types are all available here, as one of the China main rail supplier, GNEE RAIL has been working on supplying economical green railway products all over the world.
