SAE1020 low-carbon steel pipe 100mm 20mm diameter 20CR4 precision seamless steel pipe

The essence of high-temperature tempering brittleness of precision bright tubes is generally believed to be the result of impurity elements such as phosphorus, tin, antimony, and arsenic segregation at the original austenite grain boundaries, leading to grain boundary embrittlement. And alloy elements such as manganese, nickel, chromium, and the above-mentioned impurity elements undergo co segregation at grain boundaries, promoting the enrichment of impurity elements and exacerbating embrittlement. On the contrary, molybdenum has a strong interaction with impurities such as phosphorus, which can generate precipitates within the crystal and hinder the segregation of phosphorus at grain boundaries. This can alleviate the high-temperature tempering brittleness of rare earth elements, which also has a similar effect to molybdenum. Titanium more effectively promotes the precipitation of phosphorus and other impurity elements within the crystal, thereby weakening the grain boundary segregation of impurity elements and slowing down high-temperature tempering brittleness.

Wuxi Haiwo Metal Products Co., Ltd. specializing in the production of special steel, high precision precision seamless steel pipe, alloy steel, steel plate, steel coil, galvanized coil, galvanized pipe, galvanized sheet, decorative pattern plate, PPGI/PPGL, cold drawing profile, pipe, bar, aluminum plate, aluminum coil, aluminum rod, aluminum, copper, copper rod, copper material, etc., non-standard custom size, provide material precision cutting, molding, packaging, etc, We worked for the petroleum, chemical, electric power, automobile parts, machinery processing and other industries to provide one-stop service.My company in Germany, Italy, Spain, Japan and other world famous steel pipe production enterprises and domestic large steel and pipe production enterprises established good relations of cooperation, reliable, stable and high quality supply to support us go further.Our products are exported to Europe, North America, South America, Japan, South Korea, southeast Asia, Middle East and other countries, and have established a good international reputation among foreign customers.We sincerely hope to establish a long-term and comprehensive strategic partnership with you to achieve mutual benefit and common development!