Anodized aluminum sheet for traffic sign is a commonly used material for making traffic and road signs because of its corrosion resistance, abrasion resistance, light weight and excellent visual effect. Usually, 1000 series or 3000 series aluminum alloy is used. 1000 series aluminum has higher purity and better corrosion resistance; 3000 series aluminum is added with manganese and other elements to improve strength, while maintaining good formability and corrosion resistance. H14 or H24 is more common tempers of anodized aluminum sheet for for traffic sign, H means hard state, and the larger the number means higher hardness. H14 is slightly hardened and suitable for applications requiring a certain degree of softness; H24 is fully hardened and suitable for applications requiring higher strength and hardness.
Anodized aluminum sheet for for traffic sign are generally available in thicknesses from 1.0mm to 3.0mm, depending on the size of the sign and the intended environment. For smaller or indoor use signs, thinner anodized aluminum sheets can be selected, while for larger or outdoor use signs, thicker sheets are required to ensure adequate strength and stability. For anodized aluminum sheets used to make traffic signs, the thickness of the oxide film usually needs to be determined according to the specific use environment and requirements. Generally speaking, the standard thickness of oxide film (such as 3μm) of anodized aluminum sheet can be used indoors for a long time without discoloration, corrosion, oxidation and rust. And for traffic signs that need to be exposed to outdoor environment for a long time, a thicker oxide film (e.g. 10μm or thicker) may be chosen to improve its weathering and corrosion resistance.
Below are some advantages of anodized aluminum sheet in traffic sign making:
- Corrosion resistance: anodized treatment can effectively improve the corrosion resistance of aluminum plate, suitable for outdoor environment, able to resist the erosion of rain, sunlight and other weather factors.
- Abrasion resistance: the high hardness of anodized aluminum surface can resist scratches and abrasions, prolonging the service life of the sign.
- Lightweight: The aluminum itself is lightweight, which makes it easy to install and transport, and also reduces the requirement for support structures.
- Good visual effect: anodized aluminum sheet can achieve a variety of colors and surface effects through different processes, which can meet the visual identification needs of traffic signs.
- Environmentally friendly: Aluminum can be recycled, and the anodic oxidation process is relatively environmentally friendly and does not produce harmful substances.
- Easy to process: anodized aluminum sheet can be processed by laser cutting, stamping, bending, etc. to adapt to the needs of traffic signs of different shapes and sizes.
When select anodized aluminum sheet for for traffic signs, the appropriate thickness and surface treatment are usually selected according to the function of the sign and the environment in which it will be used to ensure its readability and durability under various conditions.