CHEMICAL COMPOSITION OF RAW MATERIAL


Grade Designation Element % Characterisitcs
TP IS-6911 C Max. Mn. Max Cr. Ni Other Elements  
321 04cR18Ni10Ti20 0.08 2.00 17.00/13.00 9.00/13.00 Ti=5xCmin max. 0.70 Titanium addition makes this steel a varbide stablized type, which offers improved intergranular corrosion resistance. Used in Heat Exchanger and superheater tubes for high temperature high pressure bollers.
304 04Cr18Ni10 0.08 2.00 18.00/20.00 8.00/1100 - Basic Steel for austentic stainless steel tubes, featuring excellent corrolon resistance and weldabllity.
304L 02Cr18Ni11 0.035 2.00 18.00/20.00 8.00/1300 - A very low carbon steel, offering good intergranular corrosion resistance even in " as welded " condition.
310 10Cr25Ni18 0.15 2.00 24.00 / 26.00 19.00 / 22.00 - Excellent high temperature properties, with ductility and weldability
316 04Cr17Ni12Mo2 0.08 2.00 16.00 / 18.00 10.00 / 14.00 Mo200 / 3.00 Molybdnum gives this steel, higher resistance to non - oxidising acides, as well as good resistance to crevice corrosion. It also offers excellent high temperature creep characteristics.
316L 02Cr17Ni12Mo2 0.035 2.00 16.00 / 18.00 10.00 / 15.00 Mo2.00 / 3.00 Lower carbon content provides better intergranular corrosion resistance than 316.
202 - 0.15 7.5 / 10.00 17.00 / 19.00 4.00 / 6.00 Si1, No. 25 Austentic stainless steel tube. Moderate corrosion resistant & good weldability.
409L - 0.03 1.00 10.50 / 13.50 0.50 max. Ti = 6xCmin
max. 0.75
A ferritic stainless steel offering resistance to chloride stress corrosion. Primarilty used in automotive industry or muffers, tail pipes, etc.
410 12Cr13 0.15 1.00 11.50 / 13.50 0.50 max - A ferritic stainless steel offering good corrosion resistance and machinability.
430 05Cr17 0.12 1.00 16.00 / 18.00 0.50max - Good combination of corrosion resistance, useful mechanical properties, and good formability.
436L 18Cr1Mo) . 3TiLCN 0.025 - 46.00 / 19.00 - Ti, Nb, Zr8Xo% +N%)/0.8 Excellent in corrosion resistance, drawability & weldability due to the addition of Mo, Ti & Nb.
439 18Cr0.4TiLCN 0.03 - 17.00 / 19.00 - Ti02 / 1.0 With high thermal conductivity & low thermal expansion coeffciency, its is suitable for heat exchanger & auto exhaust parts.
441 18Cr0.3SiTiNbLCN 0.03 - 17.5 / 18.5 1.00 Si1.0TI.1 - 0.6Nb9C + 0.3 / 1.0 The content of 18Cr and Si secures oxidation resistance. The addition of Ti and Nb and the reduction of C and N improve high temperature strength, weldability and formability.