Effect of Titanium on cast iron micro structure 1) With titanium contents of 0.15 to 0.20 percent, the graphite flakes tend to occur as Type D graphite rather than predominantly Type A, which is generally considered desirable. They found that for irons with carbon equivalent of less than about 3.9 percent, the addition of titanium tends to lower tensile strength. but, for the higher carbon equivalent irons, tensile strength is improved. Increasing the titanium content of gray iron from about 0.05 to 0.14 percent through the use of a titanium bearing pig iron increased the strength of a hypereutectic iron in an ASTM Specification A 48 test bar A (7/8 in. diameter) from 22,000 to 34,000 psi. 2) Type D flakes in general engineering iron castings is not acceptable 3) Ductile Iron Pig Iron from China *Grade 10:* Si 0.8 to 1.0; S less than equal to 0.03 ; P 0.05 to 0.06; Mn less than equal to 0.2; C greater than equal to 4.0; Ti 0.05 to 0.06 @Rs 29.0 0 per kg *Grade 12:* Si 1.0 to 1.4; S less than equal to 0.03 ; P 0.05 to 0.06; Mn less than equal to 0.2; C greater than equal to 4.0; Ti 0.05 to 0.06 @Rs 29.2 0 per kg 4) Titanium is a big difference between the Indian PIg Irons and Sorel 5) I was keen on Ti to emphasise the harm it can cause to the product 6) Surely yes..it's most harmful , specially when it's pig iron 7) Once we have used ship loads of Sorelmetal at GPI. .then substituted by sinthetic iron... 8) Synthetic iron!!! Can you explain 9) 100 % steel scrap converted to CI base metal.... 10) Ti even at this level is not acceptable 11) What abt machinability? 12) Titanium is coming as impurity in pig iron and is not added deliberately. Pig iron made by SAIL perhaps never had titanium presence. Is it effect of lower refining dur to low shaft furnaces? 13) But does Ti presencr obstructs nodularity in Ductile Iron. Because it says if C more than 4% then Ti increases tensile strength. 14) Since I don't use pig iron for ductile iron making hence there is no appreciable presence of titanium. 15) Promotes flake graphite... That's where Sorel stands tall...
16) And it takes care of N in CI.... 17) The Indian iron ore contains Ti. Hence Indian Pig irons contain higher PI 18) Ti deteriorates nodularity in S. G. Iron