Stainless steel pipe performance
1. In the process of production, stainless steel pipe fittings will form an oxidized protective film on the surface. Although this rust preventive film is very thin, it is very strong. If there is slight damage, it can be re-produced in the air to protect it. effect. As long as it is not used in very harsh and corrosive environments, you don't have to worry about rusting or rusting like galvanized fittings. There will be a raised bag, which means stainless steel fittings. Strong corrosion resistance.
2. The resistance of stainless steel pipe fittings is very good. This is mainly because the strength of stainless steel pipe fittings is relatively strong and it is not easy to twist.
3. The high temperature resistance and low temperature resistance of stainless steel pipe fittings are very strong.
4, the decorative effect is good, this is also because the plasticity of the stainless steel tube is very good, the surface is relatively bright, the drawing is steady and elegant, and can make different crafts.
Stainless steel pipe hardness
The indicators used to measure the hardness of stainless steel pipe fittings are mainly Brinell, Rockwell and Vickers. The differences are as follows:
1, Vickers hardness (code HV)
The stainless steel tube Vickers hardness test is an indentation test method that can be used to determine the hardness of very thin metal materials and surface layers. It has the main advantages of the Brinell and Rockwell test methods, but overcomes their basic shortcomings, but is not as simple as the Rockwell method, and the Vickers method is rarely used in steel pipe standards. However, the Vickers hardness tester has a wide measuring range and can measure almost all metal materials currently used in the industry.
2. Brinell hardness (code HB)
Among the stainless steel pipe standards, Brinell hardness is the most widely used, and the hardness of the material is often expressed by the indentation diameter, which is both intuitive and convenient. However, it is not suitable for hard or thin steel and steel pipes.
3, Rockwell hardness (code HR)
As with the Brinell hardness test, it is an indentation test method. But it is the depth at which the indentation is measured. The Rockwell hardness test is a widely used method, but the Rockwell hardness scale has three standards of A, B, and C, which are usually recorded as HRA, HRB, and HRC. The method is expressed as hardness data + hardness symbol, such as 50HRC. Among them, HRC is used in the steel pipe standard only after the Brinell hardness HB. Rockwell hardness can be applied to the determination of metal materials from very soft to very hard, and the hardness value can be read directly from the dial of the hardness machine. However, the hardness value is not as accurate as the Brinell method. When the sample to be tested is too small or the Brinell hardness (HB) is greater than 450, the Rockwell hardness measurement is used instead.