JIS 40N Rail
Product Overview
JIS 40KGN rail (also known as JIS 40N) is a heavy-duty railway rail engineered to meet Japan’s rigorous industrial standards. With a nominal weight of 40.9 kg/m , it offers superior load-bearing capacity and durability for demanding environments. While less common than the JIS 37A rail, the 40KGN variant is widely used in mine tunnels, factory workshops, and special railway lines requiring high-strength infrastructure.
Key Features
Dimensions:
Weight: 40.9kg/m
Head Width: 64 mm
Rail Height: 140 mm
Base Width: 122 mm
Web Thickness: 14mm
Length: customized from 6m to 24m.
Optional Steel Grades:
55Q | 50Mn | U71Mn(Material details are at the bottom)
Standards: JIS E 1103-91/JIS E 1101-93
Applications
Mining & Quarrying
Permanent haulage tracks in underground mines .
Heavy-duty transportation in open-pit mines.
Industrial Facilities
Crane rails in warehouses and workshops .
Internal logistics systems for AGVs (Automated Guided Vehicles).
Specialized Railway Lines
Heavy-duty tourist railways in hilly terrains.
Port logistics for container handling.
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.