90ARA - A (TR45) Rail
Product Overview
90ARA-A (TR45) Rail (also known as 90-lb/yd ARA-A Rail) is a specialized railway profile that meets AREMA standards. It is specifically designed for medium-load scenarios, balancing structural strength and operational efficiency. It is suitable for modern railway systems such as industrial logistics and dedicated tracks, and can be seamlessly adapted to AREMA standard components, taking into account both cost-effectiveness and reliability.
Core Advantages
🎯 Niche Application Adaptability:
Specifically designed for moderate-load scenarios, avoiding cost waste from over-engineering while eliminating the risk of insufficient strength.
🔗 Seamless System Compatibility:
Perfectly matches AREMA-standard components, reducing installation complexity and downtime for aging network retrofits and new line construction.
⚖️ Balanced Cost-Effectiveness:
Optimizes the trade-off between material usage and structural performance, achieving the best balance of cost and reliability in medium-speed, moderate-load applications.
Dimensional Parameters
| Specification Item | Value | Core Function |
|---|---|---|
| Height (H) | 142.8 mm | Key indicator for vertical load dispersion |
| Base Width (B) | 130.17 mm | Ensures sleeper interface stability |
| Head Width (C) | 65.09 mm | Optimizes wheel-rail contact performance |
| Web Depth (D) | 37.30 mm | Enhances lateral load resistance |
| Web Thickness (E) | 14.29 mm | Improves structural rigidity |
| Unit Mass | 44.67 kg/m | Balances material usage and structural performance |
| Steel Grade Type | Hardness (HB) ≥ | Tensile Strength (ksi) ≥ | Yield Strength (ksi) ≥ | Elongation (%) ≥ |
|---|---|---|---|---|
| AREMA Strength (SS) | 310 | 142.5 | 74.0 | 10 |
| Intermediate Strength Carbon (IS) | 350 | 155.0 | 105.0 | 10 |
| High Strength / Head Hardened (HH) | 370 | 171.0 | 120.0 | 10 |
| Low Alloy Intermediate Strength (LA) | 325 | 147.0 | 80.0 | 10 |
| AREMA Low Alloy Strength (IH) | 310 | 142.5 | 74.0 | 8 |
| Low Alloy Head Hardened (LH) | 370 | 171.0 | 120.0 | 10 |
| Element | Content Range (%) | Remarks |
|---|---|---|
| Carbon (C) | 0.70-0.80 | Foundation for strength |
| Manganese (Mn) | 0.80-1.10 | Improves toughness and wear resistance |
| Silicon (Si) | 0.15-0.35 | Enhances oxidation resistance |
| Phosphorus (P) | ≤0.030 | Controls impurity content |
| Sulfur (S) | ≤0.030 | Prevents brittle defects |
| Chromium (Cr) | 0.50-0.80 | Increases hardness and corrosion resistance |
Unique Value Proposition
Application Scope
Secondary Mainlines & Shuttles
Ideal for branch‑line freight or commuter routes with moderate speeds and axle loads, and for short‑haul industrial loops (e.g. mills, quarries).
Ports & Yards
Suits container‑terminal transfer cars, yard leads and straddle‑carrier tracks—offers a balance of strength and economy for sub‑100 km/h operations.
Cranes & AGV Guides
Serves as overhead‑crane rails or floor‑mounted tracks in factories and steelworks, plus precise guideways for automated guided vehicles.
Tunnel & Mining Tracks
Used underground for muck‑cars, segment handling gantries and light mine trains—light enough to handle yet robust under load.
Depot & Light‑Rail Spurs
Employed in off‑street tram sidings, maintenance depots or training loops where standard T‑rails are preferred over grooved profiles.
Customer Cases
🌟 Success Case: A North American Industrial Client (May 2019)
- Procurement Requirement: Replacement spare crane rails
- Product Specification: 90-lb/yd ARA-A Rail (TR45)
- Application Scenario: Heavy-duty crane operation tracks in a steel mill
- Customer Feedback: Excellent adaptability, easy installation, and operational stability meeting industrial heavy-load demands