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5456

AMS QQ-A-250/9 / AlMg5Mn1 / 5456 / O

Chemical Properties % Value
Silicon (Si)0,00 - 0,25
Chromium (Cr)0,05 - 0,20
Manganese (Mn)0,50 - 1,00
Magnesium (Mg)4,70 - 5,50
Copper (Cu)0,00 - 0,10
Titanium (Ti)0,00 - 0,20
Iron (Fe)0,00 - 0,40
Zinc (Zn)0,00 - 0,25
Aluminium (Al)Balance
Physical Properties Value
Density2.66 g/cm³
Melting Point568 °C
Thermal Expansion23.9 µm/m.°C
Modulus of Elasticity68 GPa
Thermal Conductivity117 W/m-K
Electrical Resistivity29 % IACS
Mechanical Properties Value
Proof Strength150 MPa
Yield Strength320 MPa
Shear Strength200 MPa
Elongation A50 mm18%
Hardness83 HB

The 5456 O aluminum alloy is known for its high corrosion resistance, good machinability, and moderate strength. As part of the aluminum-magnesium alloy class, it is widely used in industries such as maritime, automotive, and construction. The O temper indicates that the alloy has undergone a solution heat treatment, providing it with low hardness and flexibility, which gives it excellent machinability and ease of shaping. Its lightweight and durable nature make it an ideal material for outdoor applications and components exposed to harsh environmental conditions.

The 5456 O aluminum alloy is highly suitable for anodizing. Anodizing forms a protective oxide layer on the alloy’s surface, enhancing its corrosion resistance and providing an aesthetically pleasing finish. This feature makes it especially advantageous in maritime and outdoor applications. In terms of weldability, the 5456 O alloy performs well. As an aluminum-magnesium alloy, it can be welded using proper techniques to create strong and reliable welds.

In terms of bending and forming, the 5456 O aluminum alloy is highly flexible and machinable. Despite being cold-worked, it can be easily shaped and bent with the right processing techniques, making it ideal for producing complex shapes and parts in industries such as automotive, construction, and maritime. Additionally, the 5456 O alloy is suitable for use in high-vibration environments. Its high durability and elastic modulus make it ideal for vibration-resistant components such as engine parts and transport equipment.

Regarding corrosion resistance, the 5456 O aluminum alloy is highly durable, especially against seawater and humid conditions. This makes it an ideal material for maritime applications and equipment exposed to moisture. The advantages of the 5456 O alloy include high corrosion resistance, good machinability, and lightweight properties, while its disadvantages include limited performance under high temperatures and certain strength applications.

 

ALLOY DESIGNATIONS
 
5456 O has the following standard designations and specifications.

Sheets and plates per; 5456 O, ISO AlMg5Mn1, ASTM B928, ASTM B209, AMS QQ-A-250/9, UNS A95456, MIL-A-19842C

Cold Drawn Tubes per; 5456 O, ISO AlMg5Mn1, ASTM B210, UNS A95456, MIL-P-25995

Extruded Round/Flat Bar and Tubes per; 5456 O, ISO AlMg5Mn1, ASTM B221, UNS A95456, MIL-A-21170A, AMS QQ-A-200/7

Seamless Extruded Tube per; 5456 O, ISO AlMg5Mn1, ASTM B241, UNS A95456, MIL-P-25995

 

Choosing Factors for 5456 O

  • Strength: Medium
  • Machining: Poor
  • Weldability: Very good
  • Formability: Poor
  • Corrosion Resistance: Perfect
  • Heat Treating: None
 

Some Well-Known Applications for 5456 O

In marine applications,

In high strength welded structures,

It is also used in water tanks.

 

SUPPLIED FORMS

5456 O is produced/supplied in the sheet, tube/profile, round/flat bar forms.
  • Sheet
  • Round/Flat Bar
  • Tube/Profile
  • Plate

 

 

DELIVERY: