HUYI METAL is the world's premier inventor, developer and producer of nickel and cobalt alloys, with a product portfolio of more than 100 alloy components, forging products and welding consumables, more than 80 percent of which were invented in our own laboratories. All of our alloys are designed to help redefine what is possible in the energy and industrial sectors.

Rails

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HUYI METAL is the world leader in the invention, production and supply of high-nickel alloys for critical engineering.

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Description
Characteristics
Machining Data

Steel Grades 

StandardSteel Grade
ASTMASTM A1
AISI/SAE-
GB (China)U71Mn
JIS (Japan)JIS E1100
DIN (Germany)R260, R350HT
EN (Europe)EN 13674-1

The values provided in the tables are representative and typical for the materials described. However, exact specifications can differ between producers and individual batches of steel. The ASTM A1 specification is for carbon steel used in railroad track and will have variations in the alloying elements based on the requirement for hardness and strength. The DIN and EN standards will also have their own specified ranges, which can be subject to amendments and updates based on industry practices and technological advancements.Please contact us for standards and steel grades not mentioned.

 

Advantages as a Steel Supplier

Wide Product Range:Offering a comprehensive range of steel products, from structural steels, tool steels, stainless steels, to specialty grades, ensuring customers find what they need.

Quality Assurance:Implementing rigorous quality control processes and adhering to international standards to ensure the steel supplied is of the highest quality.

Competitive Pricing:Leveraging economies of scale, efficient processes, and strategic partnerships to provide competitive pricing to customers.

Experienced Staff:Possessing a knowledgeable and experienced team capable of providing expert advice, technical support, and solutions tailored to the client's requirements.

Fast Delivery: Having a well-stocked inventory and efficient logistics capabilities to ensure timely delivery, even for bulk or urgent orders.

Customization Capabilities:Offering services like cutting, bending, welding, or other fabrication processes tailored to customers' specific needs.

Sustainability:Adopting eco-friendly practices and ensuring that steel production and supply align with sustainability goals, reducing environmental impact.

Strong Supplier Relationships:Maintaining robust relationships with leading steel mills and manufacturers, ensuring consistent supply and access to the latest innovations in steel.

Technology Integration:Utilizing modern technology for inventory management, order processing, and customer communication to streamline operations and enhance the customer experience.

Global Reach: Having the infrastructure and network to supply steel products to customers across different regions or even internationally.

After-sales Support:Providing excellent after-sales service, addressing any concerns, and ensuring customer satisfaction long after the initial purchase.

Research & Development: Continually investing in R&D to understand market trends, new steel applications, and emerging technologies in the steel industry.

Training & Development:Regularly training staff to stay updated with the latest industry standards, technologies, and best practices.

Transparency: Keeping customers informed about pricing, product availability, delivery times, and any other factors that might affect their purchase decisions.

Safety Focus: Ensuring all operations prioritize safety, reducing risks for both employees and customers.


Application Areas

Heavy Rail Transit: Rails for heavy rail transit such as national railway networks carry passenger and freight trains. These rails need to support high speeds and heavy loads.

Urban Transit Systems: Lighter rails may be used in urban transit systems, including trams, light rail, and metro systems, where speeds are lower, and curves are tighter.

Industrial and Mining Operations: Special rail profiles are used in industrial applications, like factories and mines, to support heavy machinery and haul materials.

Crane Rails: These are used in ports and industrial settings to guide cranes that lift and move heavy loads.

High-Speed Rail Networks: Special rails are designed for high-speed trains, which require a smooth surface and stable foundation to support speeds that can exceed 300 km/h (186 mph).

 

Common Dimensions

Length: Rails are produced in lengths of up to 120 meters (393 feet). Longer rails are favored because they require fewer joints, which are weak points in the track.

Cross-Section: The profile of a rail includes the rail head, web, and foot. The dimensions of these vary according to the rail type and use.

Width and Height: Standard gauge rails typically have a width of 134 to 156 mm for the head and a height of around 140 to 180 mm.

Weight: Rail weight is often described by its weight per unit length, such as kilograms per meter or pounds per yard. Heavy rails used in mainline railways can weigh 40 to 60 kg/m (81 to 122 lb/yd) or more.

Processing Technology

Steel Making: The process begins with the production of steel specifically formulated for rail use, which typically includes high levels of carbon and manganese to ensure durability and strength.

Rolling: The steel is heated to a high temperature and passed through a series of rolling mills to shape it into the desired rail profile.

Heat Treatment: Rails are often heat-treated to improve their hardness and wear resistance. This may involve controlled cooling or quenching and tempering processes.

Straightening: After rolling and heat treatment, rails are straightened using hydraulic presses to ensure they meet strict straightness requirements.

Finishing: The ends of the rails are often cut to ensure they are square and to achieve the required length. Surface finishing may also be performed to remove any imperfections.

Drilling: Holes are drilled in the rails for joint bars if required.

Inspection: Rails undergo stringent inspections, including ultrasonic testing, to detect internal flaws.

Marking: Finally, rails are marked with the manufacturer's identifier, batch number, year of manufacture, and other relevant information as required by international standards.


Physical Properties

Physical PropertyUnitTypical Value Range
Tensile StrengthMPa (ksi)690-900 (100-130)
Yield StrengthMPa (ksi)300-500 (43.5-72.5)
Elongation%8-14%
HardnessHB200-350
Modulus of ElasticityGPa (ksi)200-210 (29,007-30,457)

 

Chemical Composition

ElementASTM A1 (%)U71Mn (%)JIS E1100 (%)DIN R260 (%)DIN R350HT (%)EN 13674-1 (%)
Carbon (C)0.60-0.800.65-0.750.60-0.820.40-0.600.70-0.820.40-0.80
Manganese (Mn)0.70-1.001.10-1.400.50-1.100.70-1.200.80-1.200.70-1.25
Silicon (Si)0.10-0.500.20-0.550.10-0.500.10-0.500.10-0.500.10-0.55
Phosphorus (P)max 0.04max 0.03max 0.04max 0.05max 0.05max 0.05
Sulfur (S)max 0.04max 0.03max 0.04max 0.05max 0.05max 0.05
Chromium (Cr)------
Others-----May include other alloying elements as per specific standards

For precise specifications, reference should be made to the latest versions of the relevant standards or specific manufacturer certifications. The steel for rails is selected to ensure it can resist the wear and fatigue experienced during service, and alloying elements like manganese, silicon, and sometimes chromium or vanadium are added to enhance these properties.


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