Why Choose AREMA 136RE Rail for Heavy Haul Tracks?
AREMA 136RE rail is chosen for heavy haul tracks due to its superior structural strength, high wear resistance, and compliance with strict North American engineering standards. Engineered for heavy axle loads, its 67.5kg/m (136 lb/yd) weight, increased head width, and 185.74mm height optimize load distribution and reduce maintenance in high-traffic applications.
Key Reasons to Choose 136RE Rail for Heavy Haul Tracks:
- Superior Load-Bearing Capacity & Durability: 136RE rail (or TR68) is designed for extreme durability in heavy freight and mining, efficiently managing high axle loads and reducing fatigue.
- Enhanced Wear Resistance: Manufactured to meet strict AREMA Chapter 3 standards, these rails often feature high-strength, head-hardened steel (HH) to withstand heavy vertical pressure and minimize maintenance costs.
- Optimized Profile: The 136RE rail features a, 17.46mm-thick web and a T-shaped section, providing excellent bending resistance. The 74.61mm wide head helps distribute wheel loads effectively.
136re rail dimensions:
| Profile | Standard | Dimensions mm | Section S | Mass m | ||||
|---|---|---|---|---|---|---|---|---|
| H | B | C | D | E | cm² | kg/m | ||
| American standard | ||||||||
| 136RE (TR68) | AREMA | 185,70 | 152,40 | 74,60 | 49,20 | 17,50 | 85,90 | 67,50 |
- Widespread Compatibility: It is widely used in North American and global freight, mining, and industrial sectors, making it easy to integrate with standard fasteners, concrete sleepers, and existing 6-inch base plates.
- Versatility in Material Grades: Available in Standard Strength (SS), Intermediate Strength (IS), and High Strength / Head Hardened (HH) to match specific operating conditions.
Chemical Composition of AREMA Rail Steel:
| AERMA 2019 | Strength Grade | C | Si | Mn | P | S | Ni | Cr | V |
|---|---|---|---|---|---|---|---|---|---|
| Carbon Steel | 0.74–0.86 | 0.10–0.60 | 0.75–1.25 | ≤0.020 | ≤0.020 | ≤0.25 | ≤0.30 | ≤0.010 | |
| Low Alloy Steel | Standard Strength (SS) | 0.72–0.82 | 0.10–0.50 | 0.80–1.10 | ≤0.020 | ≤0.020 | ≤0.15 | 0.25–0.40 | ≤0.010 |
| Intermediate Strength (IS) | 0.72–0.82 | 0.10–1.00 | 0.70–1.25 | ≤0.020 | ≤0.020 | ≤0.15 | 0.40–0.70 | ≤0.010 | |
| High Strength / Head Hardened (HH) | 0.72–0.82 | 0.10–1.00 | 0.70–1.25 | ≤0.020 | ≤0.020 | ≤0.15 | 0.40–0.70 | ≤0.010 |
Mechanical Properties of AREMA Rail Steel:
| AREMA 2019 | Strength Grade | Yield Strength N/mm2 |
Tension Strength N/mm2 |
Elongation % |
Brinell Hardness HBW |
|---|---|---|---|---|---|
| Carbon Steel | Standard Strength (SS) | 511MIN | 983MIN | 10MIN | 310MIN |
| Intermediate Strength (IS) | 724MIN | 1069MIN | 10MIN | 350MIN | |
| High Strength / Head Hardened (HH) | 828MIN | 1179MIN | 10MIN | 370MIN | |
| Low Alloy Steel | Standard Strength (SS) | 511MIN | 983MIN | 10MIN | 310MIN |
| Intermediate Strength (IS) | 552MIN | 1014MIN | 8MIN | 325MIN | |
| High Strength / Head Hardened (HH) | 828MIN | 1179MIN | 10MIN | 370MIN |
The 136RE rail's combination of high strength and precise dimensional control makes it ideal for, among others, heavy mainline, mining, and port crane applications.
Comparison: Why 136RE Excels in Heavy Haul
| Performance Metric | 115RE (Medium Duty) | 136RE (Heavy Haul) |
| Max Car Weight | 263,000 lbs | 315,000 lbs+ |
| Bending Resistance ($I_x$) | 65.5 $\text{in}^4$ | 94.9 $\text{in}^4$ |
| Base Width | 5.5 inches | 6.0 inches |
| Main Benefit | Versatility/Lighter loads | Maximum stability/High tonnage |
FAQ
1. Why is 136RE rail suitable for heavy haul tracks?
The AREMA 136RE rail features a high 136RE rail weight and a large 136RE rail cross section area (~86.7 cm²), which significantly improves load-bearing capacity. This makes it ideal for heavy axle loads, continuous freight transport, and long-term railway operation.
2. What are the key 136RE rail dimensions?
Standard 136RE rail dimensions include a height of 186 mm, head width of 74.6 mm, and base width of 152 mm. These parameters define the 136RE rail profile, ensuring stability, proper load distribution, and compatibility with fastening systems.
3. What does 136RE rail mean?
The term 136RE rail means a rail weighing 136 pounds per yard, with "RE" referring to the AREMA standard rail section. It is a widely used heavy rail standard in North America and international railway projects.
4. What materials are used in 136RE steel rail?
The 136RE steel rail is typically produced from high-strength carbon steel such as AREMA 900A or 1100 grades. These materials provide excellent wear resistance, durability, and long service life under heavy traffic conditions.
5. Can 136RE rail be customized for projects?
Yes, GNEE RAIL can provide customized processing such as cutting, drilling, and special lengths while maintaining standard 136RE rail dimensions. This ensures the rail fits specific installation and project requirements.
6 What applications commonly use AREMA 136RE rail?
The AREMA 136RE rail is widely used in heavy haul freight railways, mining transport lines, and high-speed passenger systems. Its optimized 136RE rail section ensures reliable performance in demanding environments.
Choosing the right rail section is critical for heavy haul performance. Whether you are evaluating AREMA 136RE rail, comparing 136RE rail profile, or analyzing 136RE rail cross section area, GNEE RAIL can support your project with optimized solutions and consistent product quality. You can contact GNEE RAIL to get tailored technical support, detailed specifications, and project-based recommendations to ensure your railway system performs efficiently and reliably.
