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Title: Designing weld-deposit properties for application vs agency testing
Category: Technical papers from Pipeline World
Downloadable: Yes 
Catalog No.: 882
Date of Publication: April 2005
Price: $25.00 US
Authors: Dr Craig Dallam and Jon Ogborn
Abstract: Finding meaningful data on weld properties can be difficult. Weld properties are non-uniform, position-dependent, inhomogeneous, and somewhat inconsistent. The welding procedure, specimen location, preparation, and testing procedures all affect the results.

Consumers should be aware of the significance of data. Manufacturers literature consists of actual test results, typical data, or a mix. Even when the information is actual test data, the actual test weld may be completely different from the application of the electrode. This issue exists for all welding processes.

Products can be designed to meet classification requirements, or for the application. When developed specifically for pipe welds, a product will be more likely to perform well in service. Ideally, the classification requirements will only be a minor constraint, a necessary, but not sufficient requirement. Information on pipeline welding consumables should be viewed in terms of how closely the test data replicates normal behaviour on the pipe weld.

The objective of this article is to help explain the types of information, and why they are different.

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