What Is the Equivalent Grade of U71Mn?
Jan 20, 2026
Rail track is an essential component of rail track, and its function is to guide the train wheels moving forward by withstanding the enormous pressure pushed by the wheels. Steel rail shall provide smooth, stable and continuous rolling surface for the passing train wheels. In electrical railway or automatic block section, railway track can also be used as track circuit.U71Mn rails are widely used for heavy industrial and crane applications due to their high strength, excellent wear resistance, and impact toughness.
| 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 |
What Is the Equivalent Grade of U71Mn?
U71Mn is a high-strength, low-alloy rail steel designed to meet GB/T 2585-2007 standards. Its closest international equivalents include:
- European EN 13674-1 R260 / R350HT steels
- Japanese JIS E1101-2013 50Mn / 60Mn rails
- American ASTM A759 rail grades for heavy industrial tracks
| Standard | Equivalent Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Typical Application |
|---|---|---|---|---|
| GB/T 2585 | U71Mn | ≥380 | 880–1080 | Heavy industrial & crane rails |
| EN 13674-1 | R260 / R350HT | 350–400 | 850–1050 | European industrial cranes |
| JIS E1101 | 50Mn / 60Mn | 360–400 | 840–1060 | Japanese gantry cranes & factory rails |
| ASTM A759 | Grade 60 | 350–400 | 840–1050 | North American crane & industrial rails |
These equivalents allow U71Mn rails to be substituted or integrated into projects that follow European, Japanese, or American standards, while maintaining mechanical performance and durability.
What steel are rails made of?
| 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 |
Other Types of Common Rail Steel Grades Worldwide
| Grade | Standard / Region | Typical Composition (wt%) |
| R260 | EN 13674-1 (Europe) | C: 0.67–0.80, Mn: 0.90–1.20, Si: ≤0.50 |
| R350HT | EN 13674-1 (Europe) | C: 0.75–0.85, Mn: 0.80–1.20, Cr: 0.20–0.50 |
| Grade 260 | AREMA (North America) | C: ~0.77, Mn: ~1.0–1.2, Si: ~0.2 |
| Grade 350 | AREMA + Mill Specs (USA/Canada) | C: 0.78–0.83, Mn: 0.90–1.20, Cr: 0.2–0.6, + V/Nb (microalloyed) |
| BH Rail (Bainitic) | JIS E 1101 (Japan), adopted in EU/India | C: 0.65–0.80, Mn: 1.0–1.4, Cr/Mo/Ni (optional, mill-specific) |
| U75V | GB/T 2585 (China) | C: 0.67–0.77, Mn: 0.70–1.00, V: 0.04–0.12 |
GNEE RAIL ensures that all U71Mn rails and their international equivalents are ready for operational deployment, offering full project support:
Rails are manufactured in custom lengths, with pre-drilled or curved sections, tailored to project layouts.
- A complete range of rail accessories-clips, baseplates, fishplates, and vibration-damping pads-are supplied to match each rail type.
- Rails can be finished with wear-resistant coatings, galvanization, or epoxy layers to extend service life.
- Engineering consultation assists clients in selecting the correct rail grade, profile, and installation method, optimizing load capacity, durability, and compliance with local standards.
By integrating high-strength U71Mn rails, international-grade equivalents, and installation-ready accessories, GNEE RAIL enables clients to deploy durable, safe, and globally compatible rail systems in warehouses, factories, ports, and crane tracks.
