Among the five basic states of aluminum plates, the H state is a state that we often come into contact with and is more subdivided. It represents the work hardening state of the aluminum plate, indicating that the aluminum plate has been hardened to improve its strength. For the same grade of aluminum alloy plate, the subdivision status is different, and there are certain differences in its performance and use.
Sasa aluminum 5052 aluminum alloy plate is a relatively common aluminum alloy in people’s lives. At present, the domestic processing technology is relatively mature. It has many different states, including O, H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36, H38, H111, H112, H114, H116, H321, etc. Different numbers have different meanings.
Add 2-3 digits after H to indicate the subdivision state of H state. Generally, the state of 2 digits is more common, and the first digit indicates the processing state of the aluminum plate:
H1: Work-hardened state, which means that the aluminum plate has not been heat-treated, and the required strength is obtained only after work-hardening.
H2: Work hardened and non-annealed state, which means that the aluminum plate has been worked hardened and the strength exceeds the specified requirements. After non-annealing, the strength of the aluminum plate is reduced to the standard strength.
H3: The state of work hardening and stabilization, which means that the mechanical properties of the aluminum plate are stabilized after heat treatment or heating during processing. H3 is only suitable for naturally aged aluminum plates at room temperature.
H4: The state of work hardening and painting, which means that the aluminum plate is not annealed after being treated with paint after work hardening.
The meaning of the second digit:
The second digit indicates the strength and work hardening degree of the aluminum plate. Generally, the hardening degree is divided into 8 grades, 1 is lower, 8 is higher, and 9 represents a super-hard state with a higher degree of work hardening than Hx8. for example:
State H18: It means that the aluminum plate is only heat-treated after work hardening, and the strength reaches a larger aluminum plate.
State H24: It means that the aluminum plate is not annealed after work hardening, and the strength is medium.
H32 state: indicates that the aluminum sheet has been annealed at low temperature after work hardening, and the state has reached a stable state, but the strength is lower than that of H24 aluminum sheet.
The meaning of the three-digit status:
H111 state: suitable for products that have undergone a proper amount of work hardening after the final annealing, but the degree of work hardening is not as good as the H11 state.
H112 state: suitable for the free processing state of hot-rolled plates, hot-processed products.
H116 status: suitable for products made of 5-series alloys with magnesium content ≥4.0%. These products have specified mechanical properties and anti-flaking corrosion performance requirements.
Post time: Sep-13-2021