ASCE 40 rail, also known as 40 lb rail, is a standard type of rail that meets the specifications of the American Railway Engineering and Maintenance of Way Association (AREMA). The “40” denotes the weight per yard, i.e. 40 lbs/yd. It is mainly used in railway systems and industrial crane rails for medium speeds and loads

ASCE 40 Rail Specifications
Bottom Width: 88.9mm
Web Thickness: 9.90mm
Head Width: 47.6mm
Rail Height: 88.9mm
Material: Q235B/55Q/U71Mn
Length: 5m-12m(customization)
Weight: 19.84kg/m
Standard: ASTM A1/ AREMA
If you have special requirements for length or higher strength materials, please contact us for special custom
40 lbs rail dimensions

ASCE 40 rail(40 lb) length are fumished from 12-25meter. Also avalable on request in lengths as short as 6 m or as long as 150 m. Steel Grade are produced to various qualities and specifications as required by our clients.
Descriptions of ASCE 40 Rail
ASCE 40 is a model naming under the American standard system, which complies with ASTM A1 and AREMA standards and clearly refers to the specific specification of light railway rails.
At GlonyCrane, we provides high-quality ASCE 40 (40lb/yd) light rail sections, manufactured in strict compliance with Amercian Standard.
Features of ASCE 40 Rail
ASCE 40 rail is mainly made of 55Q carbon steel or U50Mn low alloy steel, which combines high strength and wear resistance; some high-end products are made of U71Mn material, which further improves fatigue resistance, and is suitable for frequent starting and stopping of industrial and mining scenes.
GloryCrane is equipped with comprehensive processing capablities. We can process ASCE 40 rail according to customers reuirements, incuding cutting themto specific lengths, drilling holes, quenching the rai heads, and adding spray – codes for traceability.
15+ Years Export Experience: With 15+ years of export experience, GloryCrane offers full export documentation, third-party inspection (SGS/BV), and reliable packaging for overseas shipment.
One-to-one project support: We offer one-on-one project support, including rail selection guidance, drawing confirmation, and accessory matching. Technical team with deep industry expertise ensures smooth implementation for international projects
As a leading crane rail supplier, GloryCrane offers meticulously engineered gantry crane rail and overhead crane rail solutions. We specialize in providing customizable gauge configurations ranging from 600mm to 1520mm, along with tailored cross – sectional parameters to meet diverse project requirements.
Rail ASCE 40 (40 lb) Material Strength
| U71Mn | Mechanical Property | Chemical Composition(%) | ||||||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
| ≥390 | ≥40 | ≥880 | — | 9% | — | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.030 | 0.030 | 0.250 | 0.250 | 0.250 | |
| 55Q | Mechanical Property | Chemical Composition(%) | |||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HB | ≤ | ≤ | ||||
| — | — | 685 | 69 | — | — | 0.50-0.60 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.040 | |
| Q235B | Mechanical Property | Chemical Composition(%) | ||||||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
| ≥390 | ≥40 | ≥645 | ≥66 | 13% | — | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.040 | 0.040 | 0.250 | 0.250 | 0.250 | |
GloryCrane Service Customized options include:
ASCE rail for non – standard hole arrangement requirements.
Bending: GloryCrane provides professional cold and hot bending services for ASCE rail to meet customized requirementssuch as curved track installations, turntables, and crane rail systems
Precision rail end bevelling: ASCE rail for customized head shape options
Advanced surface treatments (e.g., hot-dip galvanization): Engineered bolt hole configurations for specialized mounting requirements
Complete Accessories for ASCE Rail System
As a professional supplier of ASCE rail, GloryCrane not only provides high-quality ASCE steel rail, but also a full range of compatible installation accessories, ensuring safe and efficient operation of the entire rail system. All accessories undergo strict quality control to perfectly match ASCE rails, enabling “one-stop procurement + worry-free installation.”
Fish Plates(Rail Joint Bar): Fishplate for ASCE 40 rail is usually made of U71Mn, U75V low-alloy high-strength steel or nodular graphite cast iron, with tensile strength ≥880MPa and hardness HB≥280, which can meet the requirements of wear-resistance and impact-resistance. The length is usually 600~900mm (need to cover the rail joint), the thickness is matched with the rail waist (about 14~16mm), and the spacing of bolt holes corresponds to the reserved holes in the rail joint. Conventional 4-hole or 6-hole design (ASCE 40 are mostly 4-hole structure).
Rail Clamps/Rail Clip: Rail clamps are used to secure rails in place and prevent horizontal movement. GloryCrane supplies various types of rail clips, including: adjustable rail clamps; welded rail clamps; bolted rail clamps
Rubber Pads: Rubber baseplates are used beneath the rails to absorb vibration and shock, helping reduce noise and extend track life. GloryCrane offers baseplates in several materials, including rubber, polyurethane, and composite rubber-plastic. Available types include continuous full-length baseplates and segmented short baseplates, suitable for various rail layouts and noise reduction requirements.
Rail Soleplates: GloryCrane’s steel soleplates are manufactured using structural steels such as Q235B, Q345B, and ASTM A36. These materials provide excellent weldability and load-bearing capacity, making them suitable for a variety of rail installation environments.
Alumothermic Welding kits: GloryCrane offers a full set of alumothermic welding equipment for rail track installation. Our solution uses an aluminum – iron oxide exothermic reaction to form high – strength, fatigue – resistant joints. With no need for complex power setups, it enables rapid on – site installation, making it a preferred choice for heavy – duty crane rails.
Steel Rail (40 LB) ASCE 40 Application Range
ASCE 40 rail is a type of light-duty rail in the railway rail category, suitable for scenarios with low axle loads, temporary use, or medium to low-speed transportation. It is widely applied in industrial track systems with small to medium loads.
The ASCE rail is mainly used in industrial bridge-type/gantry crane runways and track transportation systems.
ASCE rails, developed under the standards of the ASCE, are designed specifically for lighter industrial applications, including:
Medium Duty Railway Transport
ASCE 40 rail (unit weight 19.84 kg/m) as American Standard medium load rails are widely used in railway systems with medium speed and load:
Ordinary passenger and freight lines: For railway lines with a speed of ≤ 120 km/h, able to withstand the dynamic pressure and impact loads of train operation, especially suitable for freight trains transporting coal, ore and other bulk goods.
Specialised tracks for mining areas: In the internal transport routes of mining areas, ASCE 40, with its high compressive strength and abrasion resistance (made of materials such as 700 series carbon steel), can be adapted to the needs of high-frequency, medium-load operation of mine cars.
Yards and grouping stations: Sidings for railway grouping stations and vehicle sections, supporting the movement of locomotive shunting and maintenance equipment, compatible with standard gauges (1435 mm) and a variety of fastening systems (e.g., slatted fasteners).


Industrial and Harbour Crane Rails
Port gantry cranes and container cranes: Its I-beam cross-section (rail head 47.62mm, rail height 88.9mm) is designed to spread the load, adapting to the load-bearing requirements of 20-50 tonnes for lifting systems. The high manganese steel material (e.g. U71Mn) further improves impact resistance and reduces rail deformation.
Automated warehousing logistics rail: Suitable for logistics equipment in the warehouse mobile rail, modular design to support rapid splicing, reduce installation and maintenance costs.
Heavy equipment rails in factories: Such as material transport rails or production line rails in steel mills, with rubber cushions to reduce vibration and noise and prolong service life.
Temporary Works and Special Scenarios
With its light weight (33% lighter than ASCE 60) and flexible deployment, ASCE 40 rail is suitable for the following scenarios:
Temporary tracks for construction sites: Supporting the movement of heavy machinery such as bridge erectors and shield machines, using quick-release fasteners and lightweight sleepers (e.g., anticorrosive wood sleepers or composite sleepers) to improve construction efficiency.
Mining equipment mobile line: Laying temporary transport track in open or underground mines, adapting to complex terrain and high-frequency vibration environment, reducing the risk of track fatigue fracture
Military and emergency engineering: As a wartime or post-disaster rapid laying track, support the rapid deployment of material transport equipment


Special Environments and International Projects
ASCE 40 rails are adapted to diverse environments through material optimisation and surface treatment:
Highly corrosive environments: GLORYCRANE offers galvanised surfaces or zinc-rich epoxy primers for coastal salt spray areas or humid climates, extending the rust protection cycle.
Cross-border railway projects: As a representative type of American Standard rail, it has been exported to the Americas and South East Asia for railway upgrading projects.
Global Shipping & Logistics: Your Partner in Seamless Delivery
At GloryCrane, we ensure fast and reliable delivery of crane rals to ports worldwide. With strategic partnerships and fexible logistics solutions, your orde arrives on time, every time!
Global Port Coverage
From Shanghai to Rotterdam, Hamburg to Singapore, we ship to majorindustrial hubs via sea freight, air freight, or multimodal transport.
Secure Packaging
Rails are bundled with anti-rust coatings and wrapped in waterproofmaterials.
Custom crating available for fragile components (e.g., clips, bolts)
About GloryCrane
GloryCrane has been focusing on the foreign trade of crane rails for morethan 10 years. Relying on high-quality supply chains such as Anshan lron and Steel Group and Baotou Steel Group, it provides customized production ofcrane rails (adjustable length and aperture) and full-process services ofdirect shipment from global ports.