M4 4.2 6.3 Tapping Screw Carbon Steel Galvanized Zinc Plated Q235 ASTM A325

Aluminum (Al) is a lightweight, soft, and highly ductile metal that is widely used across various industries. Below are its main characteristics, composition, and applications in different sectors.

Stainless Steel (SUS304, 304L, 316, 316L, 316Ti, 410, 420)

• Medical and Pharmaceutical: Used in surgical instruments, implants, and sanitary tubing due to its corrosion resistance and ease of sterilization.
• Food Processing: 304 and 316 stainless steels are common for food-grade equipment, offering corrosion resistance against acidic and alkaline foods.
• Chemical Processing: 316L and 316Ti are suitable for harsh chemical environments, where resistance to acids and chlorides is essential.
• Marine: 316 and 316L are often used in marine environments due to their resistance to saltwater corrosion.
• Automotive and Aerospace: Stainless steel grades like 410 and 420 are used in high-strength applications, including parts exposed to high wear.

• Lightweight: Aluminum has a density of only 2.7 g/cm³, about one-third that of steel, making it ideal for products that require weight reduction.
• Corrosion Resistance: It has excellent oxidation resistance. When exposed to air, a thin layer of aluminum oxide forms on the surface, providing protection against corrosion.
• Electrical and Thermal Conductivity: While not as conductive as copper, aluminum still offers good electrical and thermal conductivity and is preferred in many applications due to its lightweight.
• Recyclability: Aluminum is 100% recyclable and retains its properties during the recycling process, making it valuable from both an economic and environmental perspective.
• Formability: Aluminum is highly ductile and easy to process, allowing it to be stretched, extruded, and rolled into various shapes.
• Non-Magnetic: Being a non-magnetic metal, aluminum is suitable for use in devices sensitive to magnetism.

For polished aluminum alloys, use a dedicated aluminum polish to restore the shine. Apply the polish with a soft cloth in a circular motion, then buff the surface to achieve a smooth, glossy finish.