JIS 50N Rail
Product Overview
JIS 50N rail(also known as JIS 50kgN rail) is a high-strength heavy rail designed for demanding applications such as heavy-haul railways, mining, and port logistics. Classified under JIS E 1101, it features a nominal weight of 50.4 kg/m and is engineered to withstand high axle loads and dynamic stresses.

Key Features
Dimensions:
Weight: 50.4kg/m
Head Width: 65 mm
Rail Height: 153 mm
Base Width: 127 mm
Web Thickness: 15 mm
Length: customized from 6m to 24m.
Optional Steel Grades:
55Q | 50Mn | U71Mn(Material details are at the bottom)
Standards: JIS E 1101

Applications
Heavy-Haul Railways
Mainline freight tracks and high-speed rail sections requiring balanced load-bearing capacity.
Mining & Quarrying
Permanent haulage tracks in underground mines and open-pit operations for transporting ore and machinery.
Port Logistics
Container handling and bulk material transport in high-traffic port environments.
Industrial Facilities
Crane rails in warehouses and workshops, especially where high durability is critical.
Forestry Operations
Log transport tracks in mountainous forests (e.g., forestry sites).
Factory Internal Railways
Automotive plants: Transfer tracks for assembly line components (e.g., parts logistics).
Steel mills: Slab transfer cars & ladle auxiliary tracks.
Materials:
………………………………………………………………………………………………………………………………………………………………………………………………
55Q | Mechanical property | Chemical composition(%) | |||||||||
Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
MPa | kg/mm² | MPa | kg/mm² | min | HBW | ≤ | ≤ | ||||
≥ | ≥ | ≥ | ≥ | ≥ | |||||||
685 | 69 | 197 | 0.50-0.60 | 0.15-0.35 | 0.60-0.90 | 0.04 | 0.04 |
50Mn | 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 | HB | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
≥880 | 9% | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 |
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 | HB | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
≥880 | 9% | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.03 | 0.03 | 0.25 | 0.25 | 0.25 |
Why Choose Glory Rail?
As a leading rail Supplier in China, we offer competitive pricing and rapid delivery. Our JIS Standard rail track is trusted globally for its consistent quality, safety, and we have more than 15 years experience focused on steel rails.
Explore our full range of steel rails solutions and request a quote today. Partner with us for reliable, high-performance rails that drive efficiency in your operations.