Material people buy locks generally are worried that the lock is not durable or it will not be long before the surface rust or oxidation. This problem is related to the use of materials and surface treatment. From durable perspective, the best material is stainless steel, especially as the surface material, more and more light. Its strength, corrosion resistance, the same color. But also a variety of stainless steel, can be divided into ferrite and austenite. Ferritic stainless steel magnetic, commonly known as stainless iron, a long time, the environment is not good will rust only austenitic stainless gun lock steel will not rust, identification solution is simple, try to identify magnet. Copper is the most widely used one of the locks material, its mechanical properties, corrosion resistance and processing properties are good, and the beautiful color, especially forged brass handle and lock trim, surface roughness, density, nonporous, trachoma. Both solid and rust, can be used to plated 24K gold or gold dust and other surface treatment, looked magnificent, elegant and add a lot of color to people's home. Zinc alloy material, the strength and anti-rust capability is more backward, but its advantage is easily made parts of a complex pattern, in particular a pressure casting. Seen on the market more complex pattern lock zinc alloy, consumers should be carefully identified. Steel, good strength, low cost, easy to rust, generally used for the locks of the internal structure of the material are not suitable for external trim. Aluminum or aluminum alloy, aluminum is soft and light, than the end of the strength of the material, but easy shaping.
Two surface treatment, surface treatment refers to the metal and deposition, coating, chemical oxidation, or other processing methods cable lock covered in the surface of the part or the formation of a protective film. The film is mainly from the antiseptic effect, but also increase the appearance and durability, is a direct measure of the merits of the product quality is an important factor. Common methods of measuring surface treatment: cover layer thickness measurement, the binding force of checks, salt spray and humidity test, visual inspection. The coating film adhesion, hardness, humidity test and visual inspection methods.