Abstract
In Fossil power boiler, super heater coil type panel is employed to convert saturated steam to super heated steam. Generally these panels are made by formation of thick wall low alloy steel like STEEL ALLOY- 213 TUBE-22 material. The power generating capacity of Fossil power boiler is 500 MW.This STEEL ALLOY- 213 TUBE-22 material has low creep strength and it cannot withstand continuous high temperature to rectify the above problem, the usage of an alternate material called STEEL ALLOY-213 TUBE-23 was attempted.The welding operation has been carried out in super heater coil by Tungsten Inert Gas (TIG) welding and Sub- merged Arc Welding (SAW). The welding analysis in STEEL ALLOY-213 TUBE-22 and STEEL ALLOY-213 TUBE-23 materials was carried out by four types of mechanical tests namely Impact Test, Tensile Test, Bend Test and Hardness Test.From the obtained results of the mechanical tests, it can be concluded that STEEL ALLOY-213 TUBE-23 material is having better creep strength while compared with STEEL ALLOY-213 TUBE- 22 material.
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