Is the performance of Hex Head Drilling Screw stable in high temperature environment?

1. Material factors
Carbon steel material: Hex Head Drilling Screw made of ordinary carbon steel is relatively unstable in high temperature environment. When the temperature rises to a certain level, the strength of carbon steel will decrease significantly, which may cause the screw to loosen or even break. For example, in the connection of equipment near some high-temperature industrial furnaces, if ordinary carbon steel screws are used, the connection may fail due to long-term high temperature.
Stainless steel material: Hex Head Drilling Screw made of 304 stainless steel can maintain good stability in general high temperature environment and can be used normally in an environment of about 300℃. However, 316 stainless steel has better high temperature resistance due to the addition of molybdenum element, and can maintain good strength and corrosion resistance at higher temperatures. It can be used in high temperature environment of about 600℃.
2. Surface treatment factors
Electroplating treatment: If the screw is subjected to ordinary electroplating treatment, such as zinc plating, nickel plating, etc., the electroplating layer may peel and fall off in a high temperature environment, which will affect the performance of the screw. However, if a special high-temperature resistant electroplating process, such as hard chrome plating, is used, the stability of the screws at high temperatures can be improved to a certain extent.
Dacromet treatment: Dacromet coating has good high-temperature resistance. The Hex Head Drilling Screw treated with Dacromet can maintain its anti-corrosion and fastening properties in a high-temperature environment and can be used stably in an environment of about 400°C.
3. Application environment factors
Continuous high temperature: If it is in an environment with continuous high temperature and high temperature, such as near the furnace in the metallurgical industry, the engine compartment of aerospace, etc., the high-temperature resistance of the Hex Head Drilling Screw is extremely high. At this time, it is necessary to select materials and surface treatment methods with particularly good high-temperature resistance, or use special high-temperature alloy screws.
High-temperature cyclic changes: In some environments with high-temperature cyclic changes, such as the engine compartment of a car, the screws will be subjected to alternating stress due to thermal expansion and contraction, which may cause the screws to loosen or fatigue damage. However, if appropriate preload and anti-loosening measures are adopted, such as the use of spring washers, anti-loosening nuts, etc., its stability in this environment can be improved to a certain extent.
If you want to know whether the performance of Hex Head Drilling Screw is stable in high temperature environment, please feel free to contact Xianggu Hardware Products. We have a professional technical team to provide you with 7*24 hours online service!