CR100 Crane Rail

The JIS CR100 crane rail is a premium-grade, high-strength rail designed for heavy-duty overhead cranes, gantry cranes, and material handling systems in industrial environments requiring extreme load capacity. Manufactured to JIS E 1101 and JIS E 1103 standards, it combines robust structural integrity with advanced wear resistance, ensuring reliable performance under dynamic loads and harsh operating conditions.

Key Advantage

Precision Control ±0.1mm
High-Quality Carbon Steel
15 Years of Professional Manufacturing Experience

CR100 Rail Key features

Rail height: 150mm ; base width: 155mm
Web thickness: 39mm; head width: 120mm.
Material:
U71Mn High-Strength Rail Steel (default): Tensile strength ≥880MPa, hardness ≥260HBW, ideal for heavy freight and high-speed applications.

Key Specifications:

Profile: Symmetrical wide-flange design (100.2kg/m)

Length:Standard: 10/12 m; custom lengths available upon request.

Heavy-Duty Load Capacity
U71Mn steel structure withstands dynamic loads and frequent start-stop operations, minimizing deformation.
Enhanced Wear Resistance
As-rolled hardness of 260–300 HBW reduces rail head wear compared to conventional carbon steel.
Microalloyed composition (0.65–0.76% C, 1.10–1.40% Mn) ensures resistance to surface fatigue and abrasion.
Precision Engineering
Tight dimensional tolerances (±0.5 mm for height/width; ±0.3 mm for head profile) ensure seamless alignment with crane wheels and fasteners.
Corrosion Protection
Optional hot-dip galvanization or epoxy coatings for outdoor applications in marine or high-humidity environments.

CR100 Crane Rail Material Properties

Grade	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	C	Si	Mn				≤	≤
U71Mn	-	-	≥880	-	9%	-	0.65-0.76	0.15-0.35	1.10-1.40	0.03	0.03	0.25	0.25	0.25

Steel Grade U71Mn

Mechanical Property

Yield Strength (MPa) -

Yield Strength (kg/mm²) -

Tensile Strength (MPa) ≥880

Tensile Strength (kg/mm²) -

Elongation (Min.) 9%

Hardness (HB) -

Chemical Composition (%)

Carbon (C) 0.65-0.76

Silicon (Si) 0.15-0.35

Manganese (Mn) 1.10-1.40

Sulfur (S) 0.03

Phosphorus (P) 0.03

Chromium (Cr) 0.25

Nickel (Ni) ≤ 0.25

Copper (Cu) ≤ 0.25

Applications

Ports & Maritime
Container cranes in international ports for handling 40+ ton containers.
Ro-Ro terminals and bulk material handling systems.
Heavy Industry
Steel mills and foundries for overhead cranes transporting molten metal or heavy machinery.
Shipyards for gantry cranes in vessel assembly and repair.
Mining & Construction
Underground mining transport systems with high payload requirements.
Quarries and aggregate processing plants for mobile crane operations.
Aerospace & Automotive
Aircraft hangars for assembly line cranes handling large components.
Automotive manufacturing for heavy-duty press shop cranes.

FAQs

Q:Length, Delivery and Surface Treatment of CR100 Rail (Common Options)？

A: Common full-length segments: 12 meters (or 8–25 meters as required). Delivery options include: bare rail, oil-coated (for rust prevention), or surface-polished/painted. The rail can be factory-treated with heat (head hardening) or full-rail hardening, with specific details subject to the purchase contract.

Q：What Are the Welding and Installation Precautions for CR100 Rail?

A: For crane rails, butt welding (e.g., flash butt welding/electroslag welding) or fishplate connection is commonly used. It is crucial to control the metallographic structure of the weld seam and residual stress;

High-manganese steel materials such as U71Mn have specific requirements for welding (preheating/post-heating/selection of welding consumables must comply with specifications);

During construction, the rail bed and backing plate should be strictly controlled to avoid local stress concentration. (For specific welding processes, please refer to the recommendations of the construction engineer.)