... styling 2 Low expansion coefficient 3 Electric arc stability, ac/dc amphibious Chemical composition % CSiMnSNiFeOther≤2.00≤2.50 ... -190 Z408Nickel ferroalloy welding core, strong reducing graphite cast iron welding type medicine leather, high strength, good, first ... preheat (200 degrees Celsius) or so, gray iron and ball mill iron welding, ac/dc amphibious, arc stability, convenient operation.NOTE ...