Weldability of Annealed, Normalized, Quenched and Tempered Steels

We frequently receive requests for help developing welding procedures for welding on quenched and/or quenched and tempered steels.  Sometimes the call for help is to determine why these steels cracked after welding and how to prevent it from happening in the future. Understanding the supplied condition of the steel you are going to be welding […]

How Carbon Content Affects the Weldability of Steels

And its effects on strength, hardness, ductility and machinability

Steel is an alloy of iron and carbon along with several other elements in small quantities, all of which have an impact on its properties. Steels can contain varying amounts of carbon and are typically categorized as low, medium or high carbon steels. Low carbon steels are those containing 0.30% carbon or less.  Medium carbon […]

Using the Carbon Equivalent Method to Determine Weldability of Steels

Preheat is necessary in certain carbon and low alloy steel applications to prevent hydrogen induced cracking, also known as cold cracking.  Cold cracking susceptibility increases as the amount of carbon in steel and the thickness go up.  The higher the carbon content the easier it is for the steel to harden.  And, the thicker the […]