Martensitic Alloy Elbow High Temperature Strength Oxidation Resistance

Alloy elbow

Alloy elbow is a general term for various elbows. Its function is to connect two pipes with the same nominal diameter to make the pipe turn at 90 degrees or other angles. Its material is various, and alloy elbows are widely used.

Manganese steel alloy elbow is usually used in concrete pipeline and slurry pipeline because of its excellent performance of bearing impact, extrusion and material wear. High manganese steel alloy elbows are used in pipelines with intense fluid flow and strong impact; nickel steel alloy elbows are usually used in normal temperature pipelines with high concentration of oxidizing acid (nitric acid, sulfuric acid), etc., but they will be seriously corroded in the pipelines of reducing acid (hydrochloric acid, dilute sulfuric acid, etc.), unless they are used in pipelines with high concentration of oxidizing acid (nitric acid, sulfuric acid, etc.). The concentration of hydrochloric acid is very low; the elbow of martensite alloy has higher high temperature strength, oxidation resistance and water vapor corrosion resistance under 650℃, but its weldability is poor. Therefore, it is often used in high temperature steam pipeline and water gas pipeline.

Implementation standards: GB/T 12459-2005, GB/T 13401, GB/T 10752-1999.