Low carbon based wrought iron high yielding A860 WPHY 70 elbow fittings are chemically composed of metallic elements like – nickel, chromium, molybdenum, manganese, copper, vanadium, titanium, niobium, sulphur, silicon and phosphorus. Addition of these metal elements to the alloy makes it stronger and gives it increased resistance to corrosion. The yield strength of WPHY 70 material is 570 Mpa and its tensile strength is 485 Mpa.