Housing Material of metal pushbutton switch

The housing of 16mm metal pushbuttons relies on high-performance metals for durability. 304 stainless steel and aluminum are the top choices, enhancing reliability in tough environments. These materials not only withstand the rigors of daily use but also offer specific advantages that make them stand out in various industries.

Stainless steel is industry-standard for demanding applications like industrial controls and marine equipment. Its unique composition forms a self-healing passive oxide film on the surface. This film acts as a barrier, resisting corrosion from moisture, saltwater, and a wide range of chemicals. In industrial settings, where machinery is often exposed to lubricants, cleaning agents, and other potentially corrosive substances, stainless steel pushbutton housings maintain their integrity over extended periods. The high tensile strength of 304 stainless steel, approximately 515 MPa, provides robust physical protection to the internal components of the metal push button switch. This ensures that even in environments prone to vibration, impact, or rough handling, the delicate electronics inside remain safeguarded.  

Aluminum, favored for weight-saving and cost efficiency in automotive and consumer electronics, offers durability through anodization. The anodization process creates a thick, porous oxide layer on the aluminum surface, which is then sealed to enhance its protective properties. This anodized layer significantly boosts the material's corrosion resistance, protecting against environmental factors like rain, humidity, and acidic atmospheres. With a scratch resistance comparable to that of stainless steel, the anodized aluminum surface remains unmarred under normal use, maintaining a pristine appearance. The layer also acts as a shield against UV radiation, preventing color fading and degradation over time, a crucial feature for outdoor applications. In LED-integrated metal switches, the high thermal conductivity of aluminum, around 205 W/m·K, is a crucial merit. It efficiently dissipates the heat generated by the LED components, preventing overheating and ensuring the long-term reliability and optimal performance of the switch. This makes aluminum an ideal choice for applications where thermal management is critical, such as automotive dashboards and electronic devices.

Both materials outperform plastic, providing superior protection against dust, moisture, and damage. 16mm metal pushbuttons with stainless steel or aluminum housings deliver consistent actuation and safeguard integrated features, making them ideal for rugged applications. Their robust construction ensures reliable operation in harsh conditions, from extreme temperatures to high vibration environments, while also offering a longer lifespan compared to their plastic counterparts.