Temper of marine aluminum alloys

Updated : Jan. 31, 2024
Table of Contents
  1. The hull structure uses the details of the 5000 alloy H state code
  2. The status code of the 6000 -series alloys and AC -based cast alloys for ships

The state of aluminum alloy marks the processing method of materials, internal tissue and mechanical performance. Generally, different states of materials are used according to different uses.

The 5000 -series alloys used in the hull structure are used in O and H, and the 6000 -series alloys are used in T. Show.

  • In the hull structure, the 5000 series of aluminum alloy is usually O. This state is suitable for applications that require higher plasticity, such as hull plates.
  • In the hull structure, the 5000 series of aluminum alloys can also be used in the H state. The aluminum alloy in H state has improved in terms of strength and hardness than the O state.
  • The 6000 series of aluminum alloy is usually used in T state. The aluminum alloy of the T state is often used in the hull structure for parts that require higher strength and hardness, such as hull framework and support structure.

Ship aluminum plate factory workshop

The selection of aluminum alloy in the hull structure depends on specific application requirements, such as strength, hardness, plasticity, etc. The selection of temperature treatment status can adjust the performance of aluminum alloy to a certain extent to meet the engineering needs of different hull structures.

The hull structure uses the details of the 5000 alloy H state code

Code name content
H111 After annealing, cold working (rolling or straightening)
H112 Extruded state or original state after hot rolling, but there are requirements for the mechanical properties of the material, and mechanical property experiments are required.
H116 Cold working and low temperature annealing to improve the material's resistance to spalling corrosion.
H14 The tensile strength is between O state and H18 state (1/2 hard state)
H311 H31 plus small cold working status
H32 The tensile strength is between the O state and the H34 state (stabilization treatment is performed after cold working. 1/4 hard state)
H321 H32 plus small cold working status
H323 The special processing state improves the stress corrosion cracking resistance of H32 (1/4 hard state)
H34 The tensile strength is between the O state and the H38 state (stabilization treatment is performed after cold working. 1/2 hard state)
H343 The special processing state improves the stress corrosion cracking resistance of H34 (1/2 hard state)

The status code of the 6000 -series alloys and AC -based cast alloys for ships

Temper Definition and inner capacity
T1 After the high temperature heat processing is cooled, the natural timeliness is suitable for products that do not perform cold processing materials, or cold processing such as correcting the mechanical performance of calibration.
T4 After solid solution treatment, natural timeliness. It is suitable for products that do not perform cold processing products after solid solution treatment, or cold correction processing products that have a small impact on their calibration mechanical performance.
T5 After high temperature heat processing, the labor -effective state is suitable for products that do not perform cold processing after high temperature forming. Or straight -cold processing has a small product that has a small impact on its calibration mechanics.
T6 After solid solution treatment, artificial failure. It is suitable for products that have a small impact on the mechanical properties of calibration after solid solution treatment, or straightening and other operations.
T61 Treatment T6 in hot water is suitable for casting.

Related Topics: Marine Aluminum Boat Aluminum Ship Aluminium

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