5251 NS4 High-Strength, Corrosion-Resistant Aluminum Bar

The 5251 aluminum rod is a medium-strength, non-heat-treatable material that features rapid work hardening, excellent corrosion resistance, and good weldability.

It is particularly suitable for applications requiring impact resistance and structural integrity, such as in marine, shipbuilding, and automotive industries.

Specifications of 5251 NS4 aluminum bar

• EN 573
• EN 755
• EN 754
• BS L81
• BS L100
• ASTM B221
• DIN 1725

The inventory sizes of 5251 NS4 aluminum bars

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.Quick Quote

• Standard lengths: 3 meters or 6 meters (custom lengths available)
• Temper: O, H24, H34, H28, H38
• Surface treatment: Anodizing

Chemical elements of 5251 NS4 aluminum bars

Physical properties of 5251 NS4 aluminum bars

Mechanical properties of 5251 NS4 aluminum bars

Advantages of 5251 NS4 aluminum bars

• High Strength: 5251 aluminum bars can typically withstand high loads in mechanical components and structures.
• Workability: 5251 aluminum bars offer good cutting and machining properties, making them suitable for precision processes like turning and milling.
• High Impact Resistance: 5251 aluminum bars exhibit higher resilience under impact and pressure, making them suitable for manufacturing shaft components and load-bearing assemblies.
• Fatigue Resistance: 5251 aluminum bars have high fatigue strength, making them ideal for mechanical and structural components that endure repeated loads over time.
• Wide Applications: 5251 aluminum bars are commonly used in mechanical parts, connectors, and construction structures, especially in applications requiring high rigidity.

Applications of 5251 NS4 aluminum bars

• Aerospace: 5251 aluminum bars are commonly used in the manufacturing of aircraft components, such as structural parts and support frames, capable of withstanding high mechanical stresses.
• Marine: 5251 aluminum bars perform excellently in structural components of ships and offshore platforms, suitable for withstanding complex stresses and harsh environments.
• Military: 5251 aluminum bars are widely used in military components, suitable for manufacturing parts that endure high pressure.
• Pressure Vessels: 5251 aluminum bars are often used in pressure vessels and containers, offering good corrosion resistance and strength.
• Vehicle Structures: 5251 aluminum bars are extensively used in structural support components of vehicles due to their high workability and moderate strength.
• Construction: In the construction field, 5251 aluminum bars excel in supporting structures, frames, and other engineering applications.

Processing recommendations for 5251 NS4 aluminum bars

• The workability of 5251 aluminum is better than that of pure aluminum, making it suitable for various manufacturing processes.
• It is recommended to use sharp cutting tools and maintain a high machining speed.
• Keeping cutting tools sharp and using appropriate cutting angles can improve machining precision and efficiency.
• Ensure the use of sufficient lubricants during processing, which can help enhance cutting quality.
• 5251 aluminum, especially in the H22 temper, exhibits good cold-forming properties.
• Whether bending, drilling, or cutting, 5251 aluminum delivers excellent results.

Welding recommendations for 5251 NS4 aluminum bars

• 5251 aluminum is suitable for various welding methods, especially Gas Metal Arc Welding (MIG) and Tungsten Inert Gas Welding (TIG).
• When welding with 5251, 6XXX, or 7XXX series alloys, it is recommended to use 5356 filler wire.
• When welding with 5005, 5020, 1XXX, or 3XXX series alloys, it is recommended to use 4043 filler wire.
• The brazability of 5251 aluminum alloy is poor, and brazing processes are not recommended.

Equivalent specifications of 5251 NS4 aluminum bars

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