Blue Demon ERNI55 X 3/32" X 36" X 1# Tube nickel 55 cast iron TIG welding rod</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Used to repair castings， the weld metal is harder than 99.</li><li>A preheat interpass temperature of 350 degrees F minimum is recommended during welding， without which the weld and heat affected zones could develop cracks.</li><li>It may be used for repair welds or for joining various types of cast irons</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31fAmxV8EGL.jpg'></br>