Low-Temperature Carbon Steel Check Valve

For low-temperature and high-pressure working conditions ranging from -46℃ to +345℃, LCC (ASTM A352 Grade LCC) low-temperature high-strength carbon steel castings, with their unique performance design, have become the preferred material for working condition adaptation. In a low-temperature and high-pressure environment, materials need to simultaneously resist low-temperature brittleness and high-pressure deformation. LCC achieves dual guarantees through composition optimization: 0.20-0.50% nickel elements lower the material's ductile-brittle transition temperature. Even at an extremely cold -46 ° C, it can still maintain a low-temperature impact absorption energy of over 27J, preventing brittle fracture under high pressure. The low carbon content of ≤0.20% combined with manganese reinforcement enables the material to have a yield strength of ≥345MPa and a tensile strength of ≥550MPa, capable of withstanding a working pressure of up to 15MPa, far exceeding the upper limit of 10MPa for…