Durable Low-Temperature Carbon Steel Shut-Off Valve

In the selection of low-temperature carbon steel materials, LCC (ASTM A352 Grade LCC) has become the economic choice for many industries with its balanced advantages of "high performance + high cost performance". Compared with high-nickel alloy low-temperature steel (such as steel grades with 9% nickel content), LCC only contains 0.20-0.50% nickel, reducing raw material costs by more than 40%, yet still meeting the requirements of -46℃ low-temperature working conditions - its low-temperature impact absorption energy reaches over 27J, tensile strength is ≥550MPa, and its core performance indicators are close to those of high-nickel materials. And it far exceeds that of ordinary low-carbon steel (with a low-temperature impact energy of approximately 10J). From the perspective of the total life cycle cost, the advantages of LCC are more significant: its excellent corrosion resistance can reduce maintenance and replacement caused by low-temperature medium corrosion, and its service life i…