Effect of High Carbon Content in the Filler Metal on Room Temperature and High Temperature Mechanical Properties of Low Alloy Ferritic Cr-Mo-V Steel Weldments

To study the effect of high carbon content, a commercial heat of 1Cr1Mo1/4V steel welded with electrodes having specified and high carbon content were tested for room temperature mechanical properties and high temperature properties under two different postweld heat treatment conditions i.e. stress relieving and Quenching & Tempering.

 The test results indicate that the hardnes and UTS values of weldments made with high carbon electrode are higher while impact values are lower as compared to that made with specified carbon electrode. The room temperature and high temperature properties obtained with high carbon electrode suggests that the effect of high Carbon in the electrode can be negated to a large extent by adopting to Quenching & Tempering as the post weld heat treatment.