What is the difference between 5083 H111 and H116 aluminum?

Last Updated : May. 23, 2025

The primary difference between 5083 H111 and 5083-H116 aluminum lies in their tempering processes, which lead to different mechanical properties and suitability for various applications.

The difference between 5083 H111 and 5083-H116 aluminum alloys lies in their mechanical properties, processing methods, and application suitability. Both belong to the 5083 series, a marine-grade aluminum-magnesium alloy known for its excellent corrosion resistance and weldability, but their temper states (H111 vs. H116) determine their performance characteristics.

Choosing H111 provides a cost-effective and easily formable solution for mild environments, while H116 is suitable for high-strength, corrosion-resistant applications in marine or extreme conditions. The choice of material depends on a balance between strength requirements, environmental exposure, and manufacturing needs.

5083 H116 vs H111

Key Differences Between 5083 H116 and H111

Applicable Standards: H116 is processed under special procedures for high-magnesium alloys, whereas H111 is a general-purpose, moderately hardened treatment.
Processing Route: H116 relies on hot rolling to enhance performance, while H111 emphasizes cold working after annealing to control strength.
Application Scenarios: H116 performs better in marine engineering, while H111 is more suitable for conventional industrial environments.

Comparison of Mechanical Properties and Characteristics of 5083 H116 and H111

Characteristics	H111 Aluminum Plate	H116 Aluminum Plate
Strength	Medium strength, suitable for general structural components	Higher strength, meets heavy-duty requirements such as in shipbuilding
Corrosion Resistance	Excellent, suitable for industrial atmospheric environments	Superior, specially designed for marine environments
Weldability	Excellent, suitable for complex welded structures	Better crack resistance during welding, suitable for high-magnesium alloy welding
Workability	Good cold workability, suitable for forming processes	Requires coordination with hot rolling, higher degree of work hardening

5083 H116 vs H111 Tempering Processes

H111 Temper: This condition involves minimal strain hardening, achieved through slight cold working after annealing. It imparts moderate strength while maintaining good formability.
H116 Temper: This condition is the result of strain hardening and is specifically designed for marine applications. It includes stringent controls to ensure enhanced corrosion resistance and mechanical strength.

Characteristics/Temper	5083 H111	5083 H116
Processing Temper Description	Slightly work-hardened after annealing	Controlled work hardening + stabilization heat treatment
Balance of Strength and Ductility	Good ductility with moderately enhanced strength	Higher strength while maintaining a certain level of ductility
Suitable Applications	General manufacturing uses such as low-stress containers and structural components	Specifically designed for marine applications such as hulls, decks, and pontoons
Stress Corrosion Cracking Resistance (SCC)	General level	Optimized processing to significantly improve SCC resistance
Microstructure Control	Relatively loose control requirements	Magnesium content and microstructure are more strictly controlled to ensure corrosion resistance
Mechanical Property Specifications	Not restricted by strict mechanical property standards	Meets specific mechanical and corrosion resistance standards
Typical Application Fields	Storage tanks, welded structures, automotive panels, etc.	Hull structures, marine platforms, ship exteriors, watercraft
Corrosion Resistance	Excellent	Superior, especially stronger resistance to seawater corrosion
Standard References	ASTM B209, B210, B221, etc. (temper not strictly defined)	Typically refers to ASTM B928 (specifically for H116 and marine-grade aluminum plates)

5083 H116 vs H111 Mechanical Properties Comparison

Property	5083-H111	5083-H116
Ultimate Tensile Strength	300 MPa	320 MPa
Yield Strength	150 MPa	230 MPa
Brinell Hardness	75	83
Fatigue Strength	120 MPa	160 MPa
Elongation at Break	13%	12%

5083 H116 vs H111 Corrosion Resistance

5083 H111: Offers good corrosion resistance, suitable for general environments.
5083 H116: Undergoes rigorous exfoliation and intergranular corrosion testing, making it an ideal choice for marine environments.

Both alloys resist seawater and marine atmospheric corrosion, but H116 is specifically designed to provide superior performance in harsh marine conditions. Its processing reduces susceptibility to exfoliation and stress corrosion cracking, which is crucial for offshore structures and hulls.

5083 H116 vs H111 Welding and Post-Weld Performance

5083 H111: Maintains good weldability with minimal strength loss in the heat-affected zone (HAZ), making it suitable for welded structures requiring ductility.
5083 H116: While welding reduces the HAZ strength to annealed (O temper) levels, the unaffected base material retains high strength, making it well-suited for marine applications where localized strength retention is critical.

5083 H116 vs H111 Applications

H111: Suitable for applications requiring good formability and moderate strength, such as general structural components.
H116: Preferred for marine applications like shipbuilding and offshore structures, where high strength and excellent corrosion resistance are essential.

Characteristics / Temper	5083 H111	5083 H116
Processing Temper Description	Slightly work-hardened after annealing	Controlled work hardening and stabilization heat treatment
Balance of Strength and Ductility	Good ductility with moderately enhanced strength	Higher strength while maintaining a certain level of ductility
Corrosion Resistance	Good	Excellent, specifically optimized for marine environments
Stress Corrosion Cracking (SCC) Resistance	General	Optimized processing enhances SCC resistance
Microstructure Control	Relatively loose control requirements	Stricter control over magnesium content and microstructure
Mechanical Property Specifications	Not restricted by strict mechanical property standards	Meets specific mechanical and corrosion resistance standards (e.g., ASTM B928)
Applicable Standards	ASTM B209, B210, B221, etc.	ASTM B928 (specifically for aluminum plates in marine environments)
Typical Application Scenarios	General structures, such as vehicle panels, building frames, body manufacturing, industrial pedals, welded parts, and non-critical marine components where formability and weldability are prioritized.	Preferred material for marine and offshore applications like hulls, decks, offshore platforms, also commonly used in pressure vessels and cryogenic storage tanks, suitable for scenarios requiring high load-bearing capacity and exceptional resistance to marine corrosion.

Although 5083-H111 and 5083-H116 share the same base alloy composition, their different tempering processes result in distinct mechanical properties and corrosion resistance. H111 is best suited for applications requiring good formability and moderate strength, while H116 is specifically designed for marine environments demanding higher strength and superior corrosion resistance.

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