5251 NS4 Aluminum Bar
5251 aluminum rod bar is a medium-strength, non-heat-treatable aluminum alloy. It features rapid work hardening, excellent corrosion resistance, and good weldability. This alloy is particularly renowned for its superior performance in marine and chemical environments, making it ideal for applications where exposure to saltwater, humid conditions, or industrial chemicals is a concern. 5251 is especially suitable for applications requiring impact resistance and structural integrity, such as in the marine, shipbuilding, and automotive industries.
Advantage |
Description |
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High Strength |
5251 aluminum bars can typically withstand high loads in mechanical components and structures. |
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Workability |
The 5251 aluminum bars offer good cutting and machining properties, making them suitable for precision processes like turning and milling. |
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High Impact Resistance |
5251 aluminum bars exhibit higher resilience under impact and pressure, making them suitable for manufacturing shaft components and load-bearing assemblies. |
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Fatigue Resistance |
5251 aluminum bars have high fatigue strength, making them ideal for mechanical and structural components that endure repeated loads over time. |
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Wide Applications |
5251 aluminum bars are commonly used in mechanical parts, connectors, and construction structures, especially in applications requiring high rigidity. |
Our 5251 aluminum alloy bar rod conform to international standards such as EN 573, EN 755, EN 754, BS L81, BS L100, DIN 1725. We can also provide Material Testing Certificates (MTC) and third-party inspection reports upon request to ensure quality assurance and traceability for your critical applications. We offer a variety of thicknesses and widths to meet diverse application needs, and provide standard and custom sizes to meet specific design requirements.
HSTF Aluminum is a high-quality aluminum bar rod supplier and manufacturer in China.We have large stock, factory direct price, quality assurance, fast delivery.
Specification
5251 NS4 Aluminum Alloy Rod Bar Physical Properties
| Physical Property | Value |
| Density | 2.70 g/cm³ |
| Melting Point | 650 °C |
| Thermal Expansion | 23.4 x10^-6 /K |
| Modulus of Elasticity | 68 GPa |
| Shear Modulus | 26 GPa |
| Thermal Conductivity | 150 W/m.K |
| Electrical Resistivity | 37 % IACS |
5251 NS4 Aluminum Alloy Bar Chemical Composition
| Chemical Element | % Present |
| Si | 0.0 – 0.40 |
| Fe | 0.0 – 0.50 |
| Cu | 0.0 – 0.15 |
| Mn | 0.10 – 0.50 |
| Mg | 1.70 – 2.40 |
| Cr | 0.0 – 0.15 |
| Zn | 0.0 – 0.15 |
| Ti | 0.0 – 0.15 |
| Other (Each) | 0.05 max |
| Others (Total) | 0.15 max |
| Aluminium (Al) | Balance |
5251 NS4 Aluminum Bar Mechanical Properties
| Temper | Dimension (mm) | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | Hardness (HB) |
| O, H111 | ≤ 80 | Min. 150 Max. 200 | Min. 60 | 17 | 45 |
| H14, H24, H34 | ≤ 30 | Min. 200 Max. 240 | Min. 160 | 5 | 65 |
| H18, H28, H38 | ≤ 20 | Min. 240 | Min. 200 | 2 | 80 |
HSTF 6005 Aluminum Rod Bar Product
The inventory sizes of aluminum alloy 5251 NS4 bars are available in round bars, square bars, rectangular bars, and hexagonal bars.
For information on the complete inventory status of aluminum alloy 5251, please contact us.
- Standard lengths: 3 meters or 6 meters (custom lengths available)
- Temper: O, H24, H34, H28, H38
- Surface treatment: Anodizing
5251 Aluminum Rectangular Bar
Width range: 10 mm – 150 mm
Height range: 20 mm – 200 mm
5251 Aluminum Hexagonal Bar
Side length range: 10 mm – 50 mm
(customizable based on requirements)
- In addition to 5251 aluminum bars, HSTF also supplies a wide range of aluminum bar alloys in various shapes such as round bars, square bars, flat bars, and hex bars. If you are looking for alternatives with similar machinability or mechanical strength, feel free to explore our whole aluminum bar product pages or contact us for assistance. Below are some of our company’s best-selling products:
Application
5251 Aluminium Bar for Marine Engineering
Widely used in the manufacture of ship structural components, offshore platform components, port facilities and seawater treatment equipment, 5251 has excellent resistance to seawater corrosion and good weldability. It can maintain structural stability and dimensional accuracy for a long time in high-salt and high-humidity marine environments. At the same time, its moderate strength and formability make it easy to process into plates, profiles and complex components.
5251 Aluminium Bar for Pressure Vessels
5251 aluminum rod is suitable for manufacturing liquefied gas tanks, liquid storage tanks, cooling water tanks, and low-pressure pipeline systems. They have high pressure resistance and crack resistance in normal and medium temperature environments, and good weldability, making them easy to assemble and maintain on site. They are widely used in energy, refrigeration, and water treatment industries.
5251 Aluminium Bar for Transportation
5251 aluminum bars are used to manufacture truck bed floors, container frames, trailer components, and some structural parts of railway freight cars. Utilizing their high strength and light weight, they reduce overall weight while ensuring load-bearing capacity and durability, thereby reducing fuel consumption and improving transportation efficiency.
5251 Aluminium Bar for Building and Decoration
5251 aluminum rods are often processed into curtain wall keels, skylight frames, railings and handrails, door and window profiles, and various interior and exterior decorative components. They can withstand certain wind pressure and mechanical loads, and have good surface treatment adaptability, allowing for anodizing or spraying to meet the dual requirements of aesthetics and weather resistance.
Package
| Packing | 1,Generaally package:Anti-water paper+strapped with min three strapping strips. |
| 2,Standard exporting package:Anti-water paper and plastic+covered by iron shrrt+strapped with min three strapping strips. | |
| 3,Excellent package:Anti-water paper and plastic film+covered by iron sheet+strapped with min three strapping strip+fixed on the iron or wooden pallets by strapping strips. | |
| Shipping | 1,Shipping by containers |
| 2,Shipping by bulk ship | |
| Custom | Customization is available upon request |
Why Choose Us?
Quality Assurance – All products comply with ASTM, EN, ISO, ensuring high purity, uniformstructure, and stable performance.
Professional Supplier – Professional 5251 aluminium alloy bar rod supplier in China. We have an advanced factory to ensure quality and efficiency.
Competitive Price – The mature supply chain system ensure that our products are highly competitive in cost and price.
Superior Quality – Quality supervision on whole process of production from raw materials, manufacturing, packaging, warehousing till container loading.
On-Time Delivery – The mature logistics management system and company self owned freight forwarder ensure that our OTD rate reaches 100%.
