How to Select Between 115RE, 132RE, and 136RE Rails?

Technical Comparison Guide: 115RE Rail vs. 136RE Rail vs. 132RE Rail

 

For railway procurement managers and track engineers, selecting the appropriate rail section affects not only track safety and service life, but also maintenance frequency, replacement intervals, and total life-cycle costs. Under AREMA standards, 115RE, 136RE, and 132RE rails represent different weight classes designed for varying axle loads, traffic densities, and operating conditions. Choosing an undersized rail can accelerate wear and increase maintenance expenses, while overspecification may unnecessarily raise project costs.

 

This comparison guide examines their dimensions, weight, load-carrying capabilities, compatible joint bars and fastening systems, typical applications, and the balance between initial investment and long-term maintenance requirements, helping engineers and buyers determine the most cost-effective rail profile for their specific track conditions.

 

115RE vs 132RE vs 136RE Rail: Dimensional & Weight Comparison Table

 

The section dimensions and rail weight of 115RE, 132RE, and 136RE directly influence axle load capacity, wear resistance, and compatibility with existing track components. The table below compares the key dimensions and nominal weights of these three AREMA rail profiles.

 

 

Parameter	115RE Rail (TR57)	132RE Rail	136RE Rail (TR68)
Nominal Weight (lbs/yd)	115	132	136
Actual Weight (kg/m)	56.90	65.58	67.41
Rail Height (mm)	168.28 (6.625 inches)	180.98 (7.125 inches)	185.74 (7.3125 inches)
Base Width (mm)	139.70 (5.50 inches)	152.40 (6.00 inches)	152.40 (6.00 inches)
Head Width (mm)	69.06 (2.719 inches)	76.20 (3.00 inches)	74.61 (2.9375 inches)
Web Thickness (mm)	15.88 (0.625 inches)	16.67 (0.654 inches)	17.46 (0.6875 inches)

 

Download Certified AREMA CAD Drawings & 3D Models

 

GNEE RAIL provide comprehensive dimensional drawings and technical data sheets for 115RE, 132RE, and 136RE rails to streamline your design phase. Request Technical PDF / CAD Drawings.

 

How Do Structural Differences Affect the Performance of 115RE, 132RE and 136RE Rails?

 

The taller 136RE profile provides greater bending resistance and fatigue strength for heavy-haul applications. Both 132RE and 136RE feature a wider base than 115RE, improving track stability. With the widest head, 132RE helps distribute wheel loads and reduce localized wear. These structural differences make each rail profile suitable for different axle loads and service conditions.

 

Practical Selection Considerations:

 

 

• In practical applications, the lighter 115RE section offers a cost-effective solution for moderate axle loads, branch lines, industrial sidings, and replacement projects where compatibility with existing infrastructure and lower initial investment are important considerations.

 

• The 132RE profile provides a balanced combination of load-carrying capability, wear resistance, and track stability, making it well suited for mixed-traffic networks and rail upgrade projects.

 

• For heavy-haul freight routes and high-speed corridors, the taller and stronger 136RE section delivers superior bending resistance and fatigue performance. Although it requires a higher initial investment, its extended service life and reduced maintenance requirements can help lower long-term life-cycle costs.

 

Planning a mining or industrial rail project?

 

GNEE RAIL supply AREMA rails, matching joint bars, and complete track materials for bulk orders. Send us your quantity requirements, specifications, or BOQ, and we will provide a competitive quotation and integrated supply solution.

 

115RE Rail (TR57): Suitable for Medium-Duty Railways and Mining Operations

 

The 115RE rail, also known as TR57 or 115 lb rail, is a widely used AREMA rail profile weighing approximately 56.9 kg/m. It offers a practical balance between load-carrying capacity and material cost, making it a cost-effective solution for moderate-duty railway applications.

 

Typical Applications:

 

• Underground and surface mining rail systems.

 

• Light to medium freight transport networks.

 

• Industrial sidings, branch lines, and yard tracks.

 

• Regional passenger railways with moderate axle loads.

 

For railways operating with axle loads below 25–30 tonnes, 115RE rail provides sufficient structural strength while reducing initial steel investment and transportation costs. Its lighter section and compatibility with existing infrastructure make it particularly suitable for replacement projects, branch-line construction, and industrial rail systems where extreme heavy-haul performance is not required. By balancing performance and cost, 115RE rail can help operators achieve lower life-cycle costs and reduced capital expenditure without compromising track reliability.

 

132RE Rail: A Balanced Choice for Heavy Freight and Industrial Crane Tracks

 

Weighing approximately 65.58 kg/m, the 132RE rail occupies the middle ground between the lighter 115RE and the heavier 136RE profiles. Designed for higher axle loads and demanding service conditions, it offers an effective balance between load-carrying capacity, wear resistance, and structural stability.

 

Typical Applications:

 

• Mainline freight railways with medium-to-heavy axle loads.

 

• Industrial crane runways and gantry crane tracks in ports, steel plants, and logistics terminals using AREMA rail sections.

 

• Transit corridors experiencing accelerated rail wear.

 

• High-tonnage freight bypasses and rail upgrade projects.

 

Among the three profiles, the 132RE rail features the widest head width (76.20 mm), which helps distribute wheel loads more evenly and reduce localized contact stress. Combined with its 152.40 mm base width, the profile provides improved lateral stability and compatibility with many fastening systems designed for 6-inch rail bases. These characteristics make 132RE rail a practical choice for mixed-traffic networks and applications requiring a balance between performance and long-term maintenance costs.

 

136RE Rail (TR68): Designed for Heavy-Haul and High-Tonnage Operations

 

The 136RE rail, also known as TR68, is widely used on heavy-haul freight corridors and high-density railway networks. Weighing approximately 67.41 kg/m, this AREMA rail profile is designed to accommodate high axle loads, frequent traffic cycles, and demanding operating environments where long-term structural performance is critical.

 

Typical Applications:

 

• Class I freight railways and heavy-haul networks carrying axle loads of 35 tonnes or higher.

 

• High-density resource transportation corridors, including coal, iron ore, and bulk mineral routes.

 

• High-speed passenger lines requiring enhanced track stiffness and reduced rail deflection.

 

• Mainline railways subjected to intensive traffic and severe service conditions.

 

Compared with lighter rail sections, the 136RE profile features a greater overall height and a thicker web (17.46 mm), providing a higher section modulus and improved resistance to bending and fatigue. These characteristics help maintain track geometry, reduce wear in curved sections, and extend maintenance intervals under heavy traffic conditions. Although the 136RE requires a higher initial investment, its longer service life and reduced maintenance requirements can contribute to lower life-cycle costs, making it a preferred choice for heavy-haul and high-tonnage railway applications.

 

Which Rail Should You Choose?

 

115RE, 132RE or 136RE? Tell us your requirements-we'll recommend the right rail for your project.
 

Material Grades and Heat Treatment: How They Affect Rail Service Life

 

Under AREMA specifications, 115RE, 132RE, and 136RE rails are available in different strength grades to meet varying traffic and wear requirements.

 

• Standard Strength (SS): Suitable for moderate traffic, branch lines, and industrial railways where extreme wear resistance is unnecessary.

 

• Intermediate Strength (IS): Offers higher strength and wear resistance, making it suitable for mainline freight and mixed-traffic networks.

 

• High Strength / Head Hardened (HH): Heat-treated to a minimum hardness of 370 HBW, providing superior resistance to wear and rolling contact fatigue. HH rails are widely used on heavy-haul lines, sharp curves, and high-tonnage routes where extended service life is required.

 

 

Specs	Steel Grade	Hardness	Tensile Strength	Yield Strength	Elongation
	(grade shown on web)	HB	ksi	ksi	%
AREMA(with Carbon Steel chemistry)	Standard Strength (SS)	≥ 310	≥ 142.5	≥ 74.0	≥ 10
	Intermediate Strength (IS)	≥ 350	≥ 155.0	≥ 105.0	≥ 10
	High Strength / Head Hardened (HH)	≥ 370	≥ 171.0	≥ 120.0	≥ 10
AREMA(with Low Alloy Steel chemistry)	Standard Strength (LA)	≥ 310	≥ 142.5	≥ 74.0	≥ 10
	Intermediate Strength (IH)	≥ 325	≥ 147.0	≥ 80.0	≥ 8
	High Strength / Head Hardened (LH)	≥ 370	≥ 171.0	≥ 120.0	≥ 10

 

Strict Quality Control & Certified Rail Assurance

 

All 115RE / 132RE / 136RE rails are supplied with Mill Test Certificates, providing full traceability of chemical composition, mechanical properties, and heat number identification for each production batch.

 

To ensure structural reliability in heavy-duty railway applications, every rail undergoes 100% non-destructive testing (NDT), including ultrasonic testing (UT) for internal defect detection and magnetic particle inspection (MT) for surface integrity verification.

 

SS 115RE RAIL MTC:

 

LH 115LB RAIL MTC:

 

 

 

 

Procurement Considerations: OTM Compatibility

 

When selecting 115RE, 132RE, or 136RE rails, compatibility with other track materials (OTM) is equally important. Joint bars, tie plates, and fastening systems must match the rail profile to ensure proper installation and long-term track performance.

 

 

• Joint Bars (Fishplates): Each rail section requires profile-specific joint bars. Although 132RE and 136RE share a 152.40 mm base width, their different heights require different fishplates.

 

• Tie Plates: 132RE and 136RE can share certain 6-inch tie plate designs, while 115RE requires tie plates for its 5.5-inch base.

 

• Fasteners: Rail clips, spikes, and anchors must be selected to match the rail geometry and fastening system.

 

Using compatible OTM components helps reduce installation issues, maintain track stability, and lower maintenance costs.

 

Production Capacity & Global Logistics Support

 

 

Request A Quote For Your Railway Project

 

Need 115RE, 132RE, or 136RE rails? Simply send us your required rail section, quantity, steel grade, and any processing or accessory requirements. Our team can help you select compatible fishplates, fastening systems, and other track materials to ensure a complete solution.

 

Send your specifications or drawings today, and GNEE RAIL will provides a competitive quotation within one business day.

 

Frequently Asked Questions

 

Q: Are 132RE and 136RE accessories (such as fishplates) interchangeable?

A: Generally, no. While both profiles share a base width of 152.40 mm, their vertical heights differ (180.98 mm for 132RE vs 185.74 mm for 136RE). Consequently, their fishing heights and web dimensions are different, which requires specific joint bars (fishplates) unique to each profile to ensure structural alignment and safety. However, they may share certain tie plate profiles and anchors that only depend on the base width.

 

Q: When should I choose head-hardened (HH) steel rails over standard carbon steel?

A: Head-hardened rails should be specified for high-wear areas such as sharp curves, steep grades, and heavy-haul freight lines that carry high axle loads. The head-hardening process increases the Brinell hardness of the rail surface to 370 HBW minimum, which significantly reduces lateral wear and rail head deformation under pressure, lowering long-term maintenance costs.

 

Q: Can you supply pre-drilled rails?

A: Yes. We can supply 115RE, 132RE, and 136RE rails either as blank ends for thermite welding or pre-drilled with standard AREMA circular/oval bolt holes (e.g., 2-hole or 3-hole configurations per rail end) for mechanical joint bars.