where metals meet processes

Welding-materials is a complex subject.

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Luckily however there are many sources available to help those willing to know and understand.

It is obvious that the interest in welding processes reflects the need to weld materials.

Conversely materials can be built in useful constructions, provided their most valued properties are not undermined by inept processes or by sloppy applications.

The recent publication of the new Volume 5 of the Ninth Edition of AWS Welding Handbook, which is the second of two volumes dedicated to Materials and Applications, concludes the periodic effort to keep this fundamental resource updated and effective also on the subject of Welding-materials.

The following excerpt (from page 3 of Volume 4, whose Chapter 1 is dedicated to Carbon and Low Alloy Steels), is just an example of the depth and breadth of how fundamental concepts are explained there:

"The versatility of steel as an engineering material can be attributed to the wide variety of microstructures that can be created through changes in composition and processing.

Understanding the basic properties of these structures and the effects of changes in chemistry are essential in designing and fabricating welds that are fit for the intended purpose."

Welding-materials: properties and procedures

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As regular readers of the Welding Advisers website (www.welding-advisers.com) certainly know, many pages are already devoted to single materials welding instructions.
Check also the Materials Overview page.

Find them from the Site-Map page.

Besides those, the Welding Resources page addresses to single issues of the Mid Month Bulletin, each of which provides a list of links to online sources on various subjects, several of which refer to specific materials.

Not less important to those looking for details on certain aspects, may be the Welding Topics page, which helps in finding the most important articles published along the years on Welding-materials, in our monthly publication, Practical Welding Letter, distributed at no cost to subscribers.

In the context of verifying the suitability of any material to be fabricated by welding, the single quality to be first studied, is its weldability, or the relative ease by which welding may be performed without inducing cracks or other unacceptable conditions.

This quality is often studied by special means as indicated in our page on Weldability Testing.

Whenever the classic application of regular processes for Welding-materials of particular sensitivity to extreme exposure risks to compromise the outcome, then special processing conditions must be devised and applied to counter the dangerous tendencies.

The most common of these precautions are formalized in classic recommendations like preheating and interpass temperature keeping, or in splitting the process in different stages to minimize deformation.

Once the possible process has been singled out and hopefully tested for the application involved, all the essential parameters should be fixed in a Welding Procedure Specification to be released and kept on record for reference and further information.

The selection of suitable materials for every application is based of proven principles.
Except for the most classic and known applications it is a dynamic process because the introduction of lighter and stronger materials requiring more sophisticated joining techniques, permits the realization of economies that weight mightily in the decisions.

Often this tendency requires that welding be finely tuned to the improved properties, and possibly be automated through feedback monitoring, lest it endangers the intended uses.

Welding-materials therefore requires knowledge and experience in both sides of the engagement: materials science and joining process characteristics.

Both are acquired through formal study and by gaining  acquaintance through practical work in laboratories serving industry.

It is also a rewarding activity likely to provide satisfaction to engineers and technicians interested in being able to solve always new practical problems in a daily struggle to advance intellectual and professional achievements.

See also an overview on this  same subject on another page at Materials-welding

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To reach a Guide to the collection of the most important Articles from Past Issues of Practical Welding Letter, click on Welding Topics.

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We used to remind to our readers titles and links to our informative pages on:

  • welding basics,
  • welding processes,
  • welding materials and
  • other welding related subjects.

We are informed that publishing a list of internal links in website pages, is judged as objectionable practice by companies that grade the relevance of the page content to users' usefulness.

Therefore, in an effort to comply with the above requirement, we remove the usual list appearing in this location, and urge our readers to use the Site Map to locate the pages that might provide them the answers to their questions.

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