5086 H321 aluminum alloy is a magnesium (Mg) containing alloy belonging to the 5xxx series in a strain-hardened and stabilized temper condition. The H321 temper is specifically stabilized in a controlled manner to provide resistance against stress corrosion cracking. This alloy stands out with its superior corrosion resistance against seawater and aggressive environments. It provides long-term durability in saltwater, humid atmospheres, and chemically exposed environments. Compared to pure aluminum, it offers significantly higher strength while maintaining good formability.

In terms of strength, 5086 H321 provides higher strength than H111 and H112 tempers and is close to H32 levels. Compared to 5083 H321 alloy, it has similar strength values but generally offers slightly lower strength and better formability. Compared to 5052 H32 alloy, it provides higher strength and better performance in marine environments. When compared to 6061-T6 alloy, it has lower strength but significantly superior corrosion resistance.

In terms of machinability, 5086 H321 alloy is moderate; it is not ideal for machining but can be easily processed in sheet and plate form. Its bending capability is limited similar to H32 temper, but it provides good results under controlled conditions. Due to higher strength, careful handling is required during bending. Cold forming is possible but requires more force.

In terms of coating capability, 5086 H321 performs well and is suitable for surface treatments such as painting and anodizing. However, in most cases, additional coating is not required due to its natural corrosion resistance. In terms of vibration response, it offers good damping capacity and can be safely used in environments with dynamic loads.

Its weldability is very high and it can be easily welded using methods such as MIG and TIG. There may be limited reductions in mechanical properties after welding, but overall performance remains high. The 5086 H321 alloy is widely used in applications such as shipbuilding, offshore platforms, defense industry, heavy transport systems, and high-reliability structural applications. It stands out especially in applications requiring corrosion resistance, strength, and resistance to stress corrosion.

ALLOY COMPOSITION STANDARDS

5086 H321 can be supplied in the following standards.
• 5086 H321 Plate; AMS QQ-A-250/7, ASTM B209, ISO AlMg4, DIN AlMg4Mn UNS A95086, ASTM B632, ASTM B928, AMS QQ-A-250/19, WNR 3.3545
• 5086 H321 Sheet; AMS QQ-A-250/7, ASTM B209, ISO AlMg4, DIN AlMg4Mn UNS A95086, ASTM B632, ASTM B928, AMS QQ-A-250/19, WNR 3.3545
 

Characteristic Properties of 5086 H321: 

• Strength: Good
• Workability: Upper-Medium
• Weldability: Good
• Formability: Very Good
• Corrosion Resistance: Excellent
• Heat Treatment: Yes
   

Some Well-Known Applications for 5086 H321: 
In maritime applications, on ship and yacht decks,
As a structural component of missiles and military equipment,
Also used in heat exchangers and tank components.
 

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We produce/supply 5086 H321 in plate/sheet and sheet forms.

• Plate
• Sheet