Crane rail plays a critical role in heavy-duty crane systems and port handling facilities, as its material determines the wear resistance, load capacity, and service life of the track. According to the Chinese standard YB/T 5055-2014 for Crane Rails, the most commonly used materials are U71Mn, U75V, and U78CrV. These are high-strength alloy steels that undergo special heat treatment to withstand high-frequency and impact loads.
- U71Mn rail is the most widely used grade, containing 0.65–0.76% carbon and 0.70–1.40% manganese, with a tensile strength of ≥880 MPa. It offers balanced toughness and fatigue resistance, making it ideal for general cranes and medium-load applications.
- U75V rail includes vanadium (0.04–0.12%), which refines the grain structure, increasing hardness and impact resistance with a tensile strength ≥980 MPa. It is often used for overhead cranes and heavy-duty port operations.
- U78CrV rail is the highest-performance option, containing chromium (0.30–0.50%) and vanadium (0.04–0.12%) with a tensile strength ≥1080 MPa. It provides superior wear resistance and deformation control, ideal for metallurgy plants, shipyards, and port crane systems.
| 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 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥980 |
| U78CrV | 0.72~0.82 | 0.50~0.80 | 0.70~1.05 | 0.30~0.50 | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥1080 |
| U77MnCr | 0.72~0.82 | 0.10~0.50 | 0.80~1.10 | 0.25~0.40 | – | ≤0.035 | ≤0.025 | ≥980 |
| U76CrRE | 0.71~0.81 | 0.50~0.80 | 0.80~1.10 | 0.25~0.35 | 0.04~0.08 | ≤0.035 | ≤0.025 | ≥1080 |
Crane Rail Specifications
| 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 |
For packaging and delivery, all rails are wrapped with anti-moisture materials and securely fastened with steel straps. They are loaded in standard 12m or 25m lengths, either in containers or bulk shipments, ensuring stability and surface protection during transit.
GNEE RAIL has a professional technical team providing customized rail selection, design, and installation support to ensure optimal rail performance throughout its service life.
