5083 H116 aluminum alloy is a magnesium (Mg) and manganese (Mn) containing material from the 5xxx series, with a temper specifically developed for marine applications. The H116 temper is optimized to provide controlled mechanical properties along with high resistance to stress corrosion cracking in marine environments. This alloy is particularly superior in terms of corrosion resistance and demonstrates long-term durability in seawater, saline atmospheres, and aggressive chemical environments. Therefore, it is one of the most critical materials for ship hulls and offshore structures.

In terms of strength, 5083 H116 provides higher strength than H111 and O tempers, and levels close to H321. Compared to 5083 H111, it offers higher strength and better performance in marine environments. When compared to 5052 H32, it provides significantly higher strength and superior corrosion resistance. Compared to 6061-T6, it can approach similar strength levels, while offering much better corrosion resistance and post-weld performance, especially in marine conditions.

In terms of machinability, 5083 H116 alloy is moderate; it is limited for machining but can be easily processed in sheet and plate form. Its bending capability is good, although larger bend radii may be required due to its higher strength. Nevertheless, the risk of cracking is low, and complex forming operations can be performed with proper processes. Its cold forming performance is balanced and reliable.

In terms of coating capability, 5083 H116 alloy shows good performance, but provides more limited surface aesthetics compared to the 5005 series in decorative applications. Anodizing can be applied, although color uniformity may vary. It is suitable for painting and other surface treatments. Additionally, it provides good damping capability in terms of vibration response, especially beneficial in large and heavy structural systems.

Its weldability is very high and high-quality welds can be achieved using methods such as MIG and TIG. Strength loss after welding is quite low. This feature provides a major advantage especially in ship hulls and large structural systems. The 5083 H116 alloy is widely used in sectors such as shipbuilding, offshore platforms, marine transport equipment, LNG tanks, pressure vessels, defense industry, and heavy industrial applications. It stands out especially in applications requiring both high strength and maximum marine corrosion resistance.

MATERIAL COMPOSITION STANDARDS

5083 H116 is available according to the following standards:
• 5083 H116 Plate; ASTM B209, UNS A95083, WNR 3.3547, AMS QQ-A-250/6, DIN AlMg4.5Mn, ISO AlMg4.5Mn0.7
• 5083 H116 Sheet; ASTM B209, UNS A95083, WNR 3.3547, AMS QQ-A-250/6, DIN AlMg4.5Mn, ISO AlMg4.5Mn0.7
 

Characteristic Properties of 5083 H116: 

• Strength: High
• Machinability: Poor
• Weldability: Moderate
• Formability: Good
• Corrosion Resistance: Excellent
• Heat Treatment: No
   

Common Applications of 5083 H116: 
In ship interiors and decks,
In the aerospace industry,
Used across various other industrial sectors.
 

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We produce and supply 5083 H116 in plate and sheet forms.

• Plate
• Sheet