Crane rails play a key role in crane structures, providing the necessary support and guidance for moving parts of the crane, such as overhead cranes and hoists. An important aspect of these rails is their strength and ability to withstand heavy loads and extreme conditions, which is crucial in heavy industry and construction.
What are the properties of crane rail?
Crane rails are high-strength, wear-resistant steel tracks designed for heavy loads, featuring specific chemical compositions (high carbon, manganese) for durability, hardness (250-388 HB), and precise dimensions (wider head, thicker web) to guide cranes safely, with properties optimized for heavy industrial use, resisting extreme temperatures and impacts.
Material & Chemical Properties
- High-Strength Steel: Typically made from high-carbon or alloy steels for exceptional strength and load-bearing capacity.
- Key Elements: Contains specific levels of Carbon (0.67-0.84%), Manganese (0.70-1.10%), and Silicon, with strict limits on Phosphorus and Sulfur for enhanced performance.
- Manganese Content: Adding manganese increases hardness and ductility, with grades like U71Mn being excellent choices.
| Steel Grade | C(%) | Si | Mn | Cr | V | P | S | Tensile Strength (Rm/MPa) |
| U71Mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | ≤0.035 | ≤0.030 | ≥880 |
Mechanical & Physical Properties
- High Hardness: Crucial for resisting wear, deformation, and indentation, ranging from 250 to 388 Brinell hardness (HB), often achieved through heat treatment (head-hardening).
- Durability: Built to withstand intense, repeated stresses and extreme environmental conditions like high temperatures and humidity.
- Shape: Features a wider head and thicker web to handle significant vertical and horizontal (transverse) loads from cranes.
Functional Properties
- Smooth Runway: Provides a stable, smooth surface for cranes to move, ensuring efficient and safe operation.
- Precision: Manufactured with tight tolerances for straightness and flatness.
- Weldability: Good welding properties allow for easier installation and modification.
Rail Products Range from GNEE RAIL
Our in-house technical team provides expert advice to help optimize rail selections and minimize lifecycle costs. With a dedicated rail stock warehouse and extensive customization capabilities, GNEE RAIL ensures each rail delivers top performance throughout its service life.
| Crane Rail Type | Standard | Size | Material | Standard Length |
|---|---|---|---|---|
| QU Series | Chinese YB/T 5055-2014 |
QU70, QU80, QU100, QU120 |
U71Mn, U75V | 12m |
| A Series | German DIN536 |
A45, A55, A65, A75, A100, A120, A150 |
50Mn,U71Mn | 10/12/15m |
| ASCE Series | American ASTM, AREMA |
ASCE25, ASCE40, ASCE60, ASCE75, ASCE85, ASCE90, ASCE115, ASCE136 |
700/900A/1100 | 6-12m, 12-25m |
| UIC Series | International Union of Railways UIC860-0, EN-13674-1 |
UIC50, UIC54, UIC60 | 900A/1100 | 12-25m |
| BS Series | British BS11-1985 |
BS50'O',BS60A,BS60R, BS75A,BS75R,BS80A, BS100A,BS113A |
700/900A | 8-25m |
| JIS Series | Japanese JIS E1103/1101 |
15kg, 22kg, 30A, 37A, 50N, CR73, CR100 |
According to JIS | 9-10m |
| AS Series | Australian AS 1085 |
31kg, 41kg, 47kg, 50kg, 53kg, 60kg, 66kg, 68kg, 73kg, 86kg, 89kg |
900A/1100 | 8-25m |
| ISCOR Series | South African ISCOR |
15kg, 22kg, 30kg, 40kg, 48kg, 57kg |
700/900A | 9-25m |
