ALUMINIUM HARD ALLOYS - Plus Metals

ALUMINIUM HARD ALLOYS

ALUMINIUM 7075 - UNS A97075

Aluminium 7075, also known as UNS A97075, is a high-strength alloy commonly used in aerospace and other demanding applications. This alloy is characterized by its exceptional mechanical properties and is typically available in a variety of forms including sheets, plates, and extrusions.

Composition
  • Silicon (Si): Max 0.40%
  • Iron (Fe): Max 0.50%
  • Copper (Cu): Min 1.20%, Max 2.00%
  • Manganese (Mn): Max 0.30%
  • Chromium (Cr): Min 0.18%, Max 0.28%
  • Magnesium (Mg): Min 2.10%, Max 2.90%
  • Zinc (Zn): Min 5.10%, Max 6.10%
  • Titanium (Ti): Max 0.20%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 570 MPa
  • Density: About 2.81 g/cm³
  • Thermal Conductivity: Roughly 130 W/m·K
  • Corrosion Resistance: Moderate, usually requires protective coating.
Applications
  • Used in high-performance vehicles for components such as chassis, frames, and suspension systems, where lightweight yet strong materials are crucial.
Advantages
  • High Strength: Exceptional strength makes it suitable for structural applications.
  • Lightweight: Provides a significant weight advantage over steel and other materials.
Limitations
  • Workability: More difficult to machine compared to other aluminium alloys.
  • Corrosion Resistance: Requires protective coatings for durability in harsh environments.

ALUMINIUM 7050 - UNS A97050

Aluminium 7050, known as UNS A97050, is a high-strength, heat-treatable alloy with excellent resistance to stress corrosion cracking. It is primarily used in aerospace applications where high strength and weight efficiency are essential.

Composition
  • Silicon (Si): Max 0.12%
  • Iron (Fe): Max 0.15%
  • Copper (Cu): Min 2.0%, Max 2.6%
  • Manganese (Mn): Max 0.10%
  • Magnesium (Mg): Min 1.9%, Max 2.6%
  • Chromium (Cr): Max 0.04%
  • Zinc (Zn): Min 5.7%, Max 6.7%
  • Zirconium (Zr): Min 0.08%, Max 0.115%
  • Titanium (Ti): Max 0.06%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 515 MPa
  • Density: About 2.80 g/cm³
  • Thermal Conductivity: Roughly 120 W/m·K
Applications
  • Aircraft structures, high-stress aerospace components, bulkheads, and fuselage frames due to its excellent mechanical properties and good stress corrosion resistance.
Advantages
  • Exceptional Strength: Combines high strength with lower weight.
  • Good Corrosion Resistance: Suitable for environments requiring protection against corrosion.
Limitations
  • Cost: Generally more expensive due to alloying elements.
  • Weldability: More challenging to weld than other alloys.

ALUMINIUM 2014 - UNS A92014

Aluminium 2014, identified as UNS A92014, is a high-strength alloy primarily used in aerospace and military applications. It offers excellent machinability and is known for its resistance to corrosion and high fatigue strength.

Composition
  • Silicon (Si): Min 0.50%, Max 2.10%
  • Iron (Fe): Max 0.70%
  • Copper (Cu): Min 3.90%, Max 5.00%
  • Zinc (Zn): Max 0.25%
  • Manganese (Mn): Min 0.40%, Max 1.00%
  • Magnesium (Mg): Min 0.20%, Max 0.80%
  • Titanium (Ti): Max 0.15%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 415 MPa
  • Density: About 2.78 g/cm³
  • Thermal Conductivity: Roughly 154 W/m·K
Applications
  • Its high tensile strength makes it an ideal choice for critical structural components, including aircraft wings, fuselage sections, and other load-bearing parts that require both durability and lightweight characteristics.
Advantages
  • High Strength: Excellent mechanical properties for demanding applications.
  • Machinability: Good machinability for precise manufacturing.
Limitations
  • Corrosion Resistance: Moderate corrosion resistance; protective coatings are often required.
  • Weldability: Not easily weldable due to its high copper content.

ALUMINIUM 2024 - UNS A92024

Aluminium 2024, designated as UNS A92024, is an aluminium-copper alloy known for its high strength and excellent fatigue resistance. It is often used in applications requiring high strength-to-weight ratios, particularly in the aerospace sector.

Composition
  • Silicon (Si): Max 0.50%
  • Iron (Fe): Max 0.50%
  • Copper (Cu): Min 3.80%, Max 4.90%
  • Manganese (Mn): Min 0.30%, Max 0.90%
  • Magnesium (Mg): Min 1.20%, Max 1.80%
  • Chromium (Cr): Max 0.10%
  • Zinc (Zn): Max 0.25%
  • Titanium (Ti): Max 0.15%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 500 MPa
  • Density: About 2.78 g/cm³
  • Thermal Conductivity: Roughly 130 W/m·K
Applications
  • Aerospace Components: Frequently used in aircraft structures and military vehicles.
  • Transport and Aerospace: Ideal for applications requiring lightweight, high-strength materials.
Advantages
  • Aluminum alloy 2024 is widely used in various applications, particularly in the aerospace industry, due to its high strength-to-weight ratio and excellent fatigue resistance.
Limitations
  • Corrosion Resistance: Limited; typically requires protective coatings.
  • Weldability: Difficult to weld due to copper content.

ALUMINIUM 2618 - UNS A92618

Aluminium 2618, referred to as UNS A92618, is a high-strength, heat-treatable alloy that provides excellent resistance to elevated temperatures. This alloy is often used in aerospace applications and is known for its durability under harsh conditions.

Composition
  • Silicon (Si): Max 0.25%
  • Iron (Fe): Min 0.9%, Max 1.4%
  • Copper (Cu): Min 1.8%, Max 2.7%
  • Manganese (Mn): Max 0.2%
  • Magnesium (Mg): Min 1.2%, Max 1.8%
  • Nickel (Ni): Min 0.8%, Max 1.4%
  • Zinc (Zn): Max 0.1%
  • Titanium + Zirconium (Ti+Zr): Max 0.2%
  • Lead + Tin (Pb+Sn): Max 0.05%
  • Titanium (Ti): Max 0.2%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 441 MPa
  • Density: About 2.83 g/cm³
  • Thermal Conductivity: Roughly 146 W/m·K
Applications
  • Aircraft structures
  • Rocket components
  • High-performance engine parts
  • Automotive parts that demand high strength and thermal resistance
Advantages
  • High Strength: Provides excellent strength under load and high temperatures.
  • Heat Resistance: Suitable for elevated temperature applications.
Limitations
  • Corrosion Resistance: Moderate; protective coatings are often needed.
  • Machinability: More difficult to machine than other alloys.

ALUMINIUM 2017 - UNS A92017

Aluminium 2017, classified as UNS A92017, is a high-strength alloy known for its excellent machinability and good corrosion resistance. It is often utilized in structural applications, particularly in the aerospace and automotive industries.

Composition
  • Silicon (Si): Min 0.20%, Max 0.80%
  • Iron (Fe): Max 0.70%
  • Copper (Cu): Min 3.5%, Max 4.5%
  • Manganese (Mn): Min 0.40%, Max 1.0%
  • Magnesium (Mg): Min 0.40%, Max 1.0%
  • Chromium (Cr): Max 0.10%
  • Zinc (Zn): Max 0.25%
  • Zirconium + Titanium (Zr+Ti): Max 0.25%
Properties
  • Tensile Strength: Approximately 500 MPa
  • Density: About 2.78 g/cm³
  • Thermal Conductivity: Roughly 134 W/m·K
Applications
  • Used in military vehicles and aircraft due to its high strength and lightweight properties.
  • Employed in the construction of missile casings and other defense-related applications.
Advantages
  • Good Machinability: Easy to machine for precision parts.
  • High Strength: Excellent mechanical properties for structural applications.
Limitations
  • Corrosion Resistance: Moderate; often requires protective coatings.
  • Weldability: More challenging to weld compared to other alloys.

ALUMINIUM 2011 - UNS A92011

Aluminium 2011, known as UNS A92011, is a free-machining alloy characterized by its high machinability and excellent surface finish. It is typically used in precision machining and manufacturing processes.

Composition
  • Silicon (Si): Max 0.4%
  • Iron (Fe): Max 0.7%
  • Copper (Cu): Min 5.0%, Max 6.0%
  • Lead (Pb): Min 0.2%, Max 0.6%
  • Bismuth (Bi): Min 0.2%, Max 0.6%
  • Zinc (Zn): 0.3%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 379 MPa
  • Density: About 2.8 g/cm³
  • Thermal Conductivity: Roughly 160 W/m·K
Applications
  • 2011 is extensively used in aerospace applications, including aircraft components and structural parts due to its high strength and excellent machinability.
Advantages
  • Excellent Machinability: Provides superior performance in machining operations.
  • Good Surface Finish: Results in high-quality surface finishes for components.
Limitations
  • Strength: Lower strength compared to other high-strength aluminium alloys.
  • Corrosion Resistance: Moderate; typically requires protective coatings.

ALUMINIUM 7175 - UNS A97175

Aluminium 7175, designated as UNS A97175, is a high-strength alloy primarily used in aerospace applications. It offers excellent mechanical properties and is known for its durability and resistance to stress corrosion cracking.

Composition
  • Silicon (Si): Max 0.15%
  • Iron (Fe): Max 0.20%
  • Copper (Cu): Min 1.20%, Max 2.00%
  • Manganese (Mn): Max 0.10%
  • Magnesium (Mg): Min 2.10%, Max 2.90%
  • Chromium (Cr): Min 0.18%, Max 0.28%
  • Zinc (Zn): Min 5.10%, Max 6.10%
  • Titanium (Ti): Max 0.10%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 435 MPa
  • Density: About 2.79 g/cm³
  • Thermal Conductivity: Roughly 142 W/m·K
Applications
  • 7175 is extensively used in aerospace applications, including airframes, wing structures, and critical load-bearing components due to its high strength and lightweight nature.
Advantages
  • High Strength: Provides excellent mechanical properties for demanding applications.
  • Stress Corrosion Resistance: Offers good resistance to stress corrosion cracking.
Limitations
  • Weldability: Difficult to weld due to its composition.
  • Corrosion Resistance: Moderate; often requires protective coatings.

ALUMINIUM 7475 - UNS A97475

Aluminium 7475, identified as UNS A97475, is an ultra-high-strength alloy designed for aerospace applications. It offers superior mechanical properties and is often utilized in the manufacture of aircraft structures and components.

Composition
  • Silicon (Si): Max 0.10%
  • Iron (Fe): Max 0.12%
  • Copper (Cu): Min 1.20%, Max 1.90%
  • Manganese (Mn): Max 0.06%
  • Magnesium (Mg): Min 1.90%, Max 2.60%
  • Chromium (Cr): Min 0.18%, Max 0.25%
  • Zinc (Zn): Min 5.20%, Max 6.20%
  • Titanium (Ti): Max 0.06%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 600 MPa
  • Density: About 2.83 g/cm³
  • Thermal Conductivity: Roughly 120 W/m·K
Applications
  • 7475 is extensively used in aerospace applications, including airframes, wing structures, and critical load-bearing components due to its high strength and lightweight nature.
Advantages
  • Ultra-High Strength: Offers superior strength for critical aerospace applications.
  • Good Fatigue Resistance: Suitable for cyclic loading applications.
Limitations
  • Corrosion Resistance: Moderate; protective coatings may be required.
  • Weldability: Difficult to weld; typically requires specialized techniques.

ALUMINIUM 7068 - UNS A97068

Aluminium 7068, designated as UNS A97068, is one of the strongest aluminium alloys available, known for its exceptional strength-to-weight ratio. It is often used in military and aerospace applications where performance and weight are critical.

Composition
  • Silicon (Si): Max 0.12%
  • Iron (Fe): Max 0.15%
  • Copper (Cu): Min 1.6%, Max 2.4%
  • Manganese (Mn): Max 0.10%
  • Magnesium (Mg): Min 2.2%, Max 3.0%
  • Chromium (Cr): Max 0.05%
  • Zinc (Zn): Min 7.3%, Max 8.3%
  • Titanium (Ti): Max 0.10%
  • Zirconium (Zr): Min 0.05%, Max 0.15%
Properties
  • Tensile Strength: Approximately 700 MPa
  • Density: About 2.78 g/cm³
  • Thermal Conductivity: Roughly 130 W/m·K
Applications
  • 7068 is widely used in aerospace applications, including airframe structures, wing components, and other critical parts due to its superior strength-to-weight ratio.
Advantages
  • Exceptional Strength: Offers one of the highest strengths among aluminium alloys.
  • Lightweight: Provides an excellent strength-to-weight ratio.
Limitations
  • Corrosion Resistance: Limited; protective coatings are often necessary.
  • Weldability: Difficult to weld due to alloying elements.

ALUMINIUM 7499 - UNS A97499

Aluminium 7499, known as UNS A97499, is a high-strength alloy designed for aerospace applications. It offers excellent mechanical properties and is often used in structural components requiring low density and high strength.

Composition
  • Zinc (Zn): Min 7.7%, Max 8.7%
  • Magnesium (Mg): Min 1.6%, Max 2.2%
  • Copper (Cu): Min 1.6%, Max 2.0%
  • Chromium (Cr): Max 0.05%
  • Iron (Fe): Max 0.15%
  • Silicon (Si): Max 0.12%
  • Titanium (Ti): Max 0.06%
  • Manganese (Mn): Max 0.10%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 590 MPa
  • Density: About 2.83 g/cm³
  • Thermal Conductivity: Roughly 130 W/m·K
Applications
  • 7499 is extensively used in aerospace applications, including airframe components, wing structures, and fuselage elements due to its high strength and low weight.
Advantages
  • High Strength: Provides excellent mechanical properties for demanding applications.
  • Low Density: Ideal for applications where weight is a critical factor.
Limitations
  • Corrosion Resistance: Moderate; often requires protective coatings.
  • Weldability: Difficult to weld; specialized techniques may be needed.

ALUMINIUM 2219 - UNS A92219

Aluminium 2219, designated as UNS A92219, is a high-strength alloy primarily used in aerospace applications. Known for its excellent weldability and fatigue resistance, it is commonly used in welded structures and components.

Composition
  • Silicon (Si): Max 0.20%
  • Iron (Fe): Max 0.30%
  • Copper (Cu): Min 5.80%, Max 6.80%
  • Manganese (Mn): Min 0.20%, Max 0.40%
  • Magnesium (Mg): Max 0.02%
  • Zinc (Zn): Max 0.10%
  • Titanium (Ti): Min 0.02%, Max 0.10%
  • Vanadium (V): Min 0.05%, Max 0.15%
  • Zinc (Zn): Min 0.10%, Max 0.25%
  • Aluminum (Al): Balance
Properties
  • Tensile Strength: Approximately 480 MPa
  • Density: About 2.84 g/cm³
  • Thermal Conductivity: Roughly 130 W/m·K
Applications
  • 2219 is widely used in aerospace applications, including airframe structures, fuel tanks, and other components that require high strength and lightweight materials.
Advantages
  • Good Weldability: Offers excellent performance in welded structures.
  • Fatigue Resistance: Good resistance to fatigue, making it suitable for cyclic loading.
Limitations
  • Corrosion Resistance: Moderate; protective coatings are often needed.
  • Strength-to-Weight Ratio: Not as high as some other high-strength alloys.

ALUMINIUM HARD ALLOYS

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