What are the factors affecting the performance of
galvanized steel pipes?
1. Carbon: The higher the carbon content, the higher the hardness, but the worse its plasticity and toughness.
2. Sulfur: It is harmful debris in steel. Steel with high sulfur content is easy to be brittle when it is processed at high temperature under pressure. It is usually called hot brittleness.
3. Phosphorus: It can significantly reduce the plasticity and toughness of steel, especially at low temperatures. This phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus must be strictly controlled. But on the other hand, the low-carbon steel contains high sulfur and phosphorus, which can make it easy to cut, which is beneficial to improve the machinability of the steel.
4. Manganese: can improve the strength of steel, weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel. High alloy steel with high manganese content (high manganese steel) has good wear resistance and Other physical properties.
5. Silicon: It can increase the hardness of steel, but the plasticity and toughness are reduced. The steel for electrical purposes contains a certain amount of silicon, which can improve the soft magnetic properties.
6. Tungsten: Can improve the red hardness and thermal strength of steel, and can improve the wear resistance of steel.
7. Chromium: can improve the hardenability and wear resistance of steel, can improve the corrosion resistance and oxidation resistance of steel.
