1350-H18 Aluminum vs. 1350-H19 Aluminum

1350 aluminum alloy is a variant of pure aluminum (aluminum content ≥ 99.5%) that has excellent electrical conductivity, thermal conductivity, and good corrosion resistance. The different tempers of 1350 aluminum (such as H18 and H19) are primarily determined by the processing of the metal, particularly the degree of strain hardening. H18 and H19 tempers are achieved by cold working the aluminum material to strain harden it, thereby increasing its strength.

1350 H18 and 1350-H19 aluminum both have high strength and good corrosion resistance, but their ductility and strength performance differ.

1350-H18 aluminum has slightly higher tensile strength and ductility, making it suitable for applications requiring good formability.

1350-H19 aluminum, on the other hand, has higher hardness and strength due to stronger strain hardening, making it suitable for applications where higher strength is required, but significant deformation is not needed.

1350 H18 Aluminum vs. 1350-H19 Aluminum Mechanical Property

Brinell Hardness

The Brinell hardness of 1350-H19 aluminum is slightly higher than that of 1350-H18. This difference indicates that the surface of 1350-H19 is relatively harder and may have better wear resistance, but it could also be more brittle.

Elongation at Fracture

• 1350-H18 aluminum has a higher elongation before fracture, indicating better ductility. Higher ductility means that 1350-H18 can be stretched or formed without fracturing, making it suitable for applications that require significant deformation.
• 1350-H19 aluminum has relatively lower ductility, and therefore may be more prone to cracking or fracturing during processing.

Tensile Strength

• 1350-H18 aluminum has a slightly higher ultimate tensile strength, meaning it can withstand greater tensile forces without fracturing. This makes 1350-H18 aluminum suitable for applications requiring higher strength and the ability to endure larger forces.
• 1350-H19 aluminum has a slightly lower tensile strength. Although it is stronger than other variants of 1350 aluminum, its lower ductility may make it less suitable for certain applications compared to the H18 temper.

1350-H18 Aluminum vs. 1350-H19 Aluminum Strain Hardening and Processing Methods

1350-H18 Aluminum

The H18 temper is achieved through cold working, which causes a certain amount of deformation in the aluminum alloy's crystal structure, thereby enhancing the material's strength. Cold working increases the hardness and strength of the material while still maintaining relatively good ductility.

1350-H19 Aluminum

The H19 temper undergoes a more intense strain hardening process than H18, resulting in higher strength but reduced ductility. The hardness of H19 increases, and its brittleness also rises during processing, making it suitable for applications requiring high strength but not significant deformation.

1350-H18 Aluminum vs. 1350-H19 Aluminum Applications

1350-H18 Aluminum

1350-H18 aluminum is suitable for applications that require both high strength and good ductility, such as power transmission lines, heat exchangers, and automotive components.

Due to its better ductility, it can also be used in applications that require higher formability, such as stamping, bending, and other processes for certain structural components.

1350-H19 Aluminum

1350-H19 aluminum is more suited for applications where very high strength is required, such as in aerospace, where high strength structural components are needed without significant deformation.

Due to its lower ductility, it may face challenges during welding or deep forming, making it more appropriate for environments where excessive deformation can be avoided.