How to identify hardware door lock materials

If the door lock is made of zinc alloy material, its hardness and anti-rust ability are very poor, 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 most 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 a material for the internal structure of locks and is not suitable for external decoration.

Aluminum or aluminum alloy, ordinary aluminum alloy (except for aerospace use) is soft and light, the material strength is low, but it is easy to process and shape.

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

From the standpoint of durability, a good 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, mainly divided into ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless iron. It will rust after a long time and in bad environment. At present, only 304 stainless steel is a good stainless steel material.