7 Ways to Eliminate Porosity in Your Welds

Porosity is a weld discontinuity that is not as detrimental to structural integrity as cracks, undercut, overlap and lack of fusion. However, it is unsightly and when painted it looks absolutely horrible. Because it does not have sharp ends, porosity does not propagate like a crack. The reason why there are limits to the amount […]

Benefits of Using Prequalified Welding Procedures

Prequalified welding procedures are a great tool available to those who need qualified procedures in conformance with  AWS D1.1 Structural Welding Code – Steel.  However, there are strict requirements for the use of a prequalified welding procedures.  It is not as easy as picking a qualified joint and using filler metal manufacturer’s recommended procedures. There […]

Proper Storage of Welding Consumables

How to store stick electrodes, and mig, flux-cored and metal-cored wires

Proper storage of both opened and unopened packages of welding consumables is crucial. It should avoid quality issues such as porosity, excessive slag fluidity, rough weld surface, difficult slag removal and more importantly, elevated levels of diffusible hydrogen which can lead to cracking. Adequate storage, handling and re-conditioning of electrodes vary according to type.  The […]

Recommendations for Welding T-1 Steels

T-1, or ASTM A514 is a high strength steel which is quenched and tempered to provide yield strengths of over 100,000psi (over 690MPa).  The name “T-1” is a trademark of Arcelor Mittal and not an ASTM, AISI or part of other organization’s standard numbering system.  ASTM A514 is primarily used as a structural steel and […]

How To Calculate Heat Input From Welding

The vast majority of fabricators are not typically concerned with heat input. For the most part this is OK. But when you are welding on materials whose microstructure can be significantly affected by welding procedures it is important to know about heat input. The reason why heat input is critical in certain applications is because […]

7 Ways To Control Distortion in Welding

Distortion is a nasty problem we experience in welding.  Understanding what causes distortion is important in order to be able to minimize or eliminate it completely.  There are physical and mechanical properties that affect distortion susceptibility of materials.  To learn more about this you can read 4 Material Properties That Affect Distortion. As fabricators we hardly […]

4 Material Properties That Affect Distortion

Welding can present many challenges, a common one being distortion.  The Procedure Handbook of Arc Welding defines distortion in a weldment as the result of the non-uniform expansion and contraction of the weld metal and adjacent weld metal during the heating and cooling cycle of the welding process.  It is extremely difficult to predict distortion […]

Preventing Hydrogen Induced Cracking

Our last post (Factors Influencing Hydrogen Induced Cracking) went over the factors that contribute to hydrogen-induced cracking.  We will now go over how to prevent HIC from happening.  If you recall, we mentioned you need all three factors to be present in order to have HIC:  These factors are 1. a susceptible microstructure, 2. threshold […]

Factors Influencing Hydrogen Induced Cracking

Hydrogen-induced cracking (HIC) is a far too common type of failure. It is also called hydrogen assisted cracking (HAC) and delayed cracking since it does not occur right after welding, but a few hours or days after the weld has completely cooled down to ambient temperature.  Cracking occurs due to a significant loss in ductility […]