Hardware knowledge: knowledge of door lock materials and instructions

Door lock knowledge:

Zinc alloy materials have poor hardness and rust resistance. Even thick plating is easy to fade, blacken, rot and blisters, but its advantage is that it is easy to make parts with complex patterns, especially pressure casting. The locks with more complicated patterns seen in the market are likely to be made of zinc alloy, and consumers must carefully identify them.

Steel has good strength and low cost, but it is easy to rust. It is generally used as the internal structural material of locks and is not suitable for external decoration.

Aluminum or aluminum alloys, ordinary aluminum alloys (except for aerospace use) are soft and light, with lower material strength, but they are easy to process and shape.

Copper is one of the most widely used lock materials. It has good mechanical properties, good corrosion resistance and processing properties, and has a bright color. Especially forged copper handles and other lock decoration parts, the surface is flat, and the density is good. No pores and trachoma. It is strong and rust-proof. It can be used to plate real gold or placer gold and other surface treatments. It looks magnificent, noble and generous, and adds a lot of color to people's homes.

From the perspective of durability, the best material should be stainless steel, especially as a surface material, the more you use it, the brighter it will be. It has good strength, strong corrosion resistance and unchanged color. However, there are many types of stainless steel, which can be divided into ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless steel. It will rust for a long time and in a bad environment. At present, only 304 stainless steel is the best stainless steel material.