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Discover our unique technical knowledge… 

Comprehensive – TWI’s and the world’s materials joining knowledge

Trustworthy – Managed by information professionals, backed by technical experts

Exclusive – Members access unique information beyond the public domain

*Please note that
Members can send literature search requests to the library by emailing


Library and Information Services

Built up over six decades, TWI’s library holds unique collections of information on all aspects of materials, joining and integrity management. From the earliest codes and standards to the latest ebooks, the service is used by TWI Members worldwide when they need trustworthy and comprehensive information to support decision-making.

How we can help you

  •  Materials property searches
  • Literature searches, using Scopus, ProQuest Dialog and our own resources
  • Supply of full text articles (subject to copyright restrictions)
  • Market and technology intelligence


The Weldasearch database is now integrated into TWI's global search. It is a collection of short abstracts (not full text papers) summarising more than 230,000 articles on welding, joining and all related technologies, produced by TWI Information Services. The database aims to be a comprehensive record of relevant worldwide literature published since 1968. If you are a Member of TWI you can find out the latest Weldasearch updates here.


If preferred, Weldasearch can still be accessed directly by Members via this link.

Access to Weldasearch is included as part of TWI Membership.

Discover more about TWI Membership 



Browse, read and download our growing collection of ebooks on all aspects of materials, joining and structural integrity.

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Library books

Search our library of more than 30,000 printed books, research reports, conference proceedings and more that you can borrow. Subjects covered include metallic and non-metallic materials, non-destructive testing, corrosion, fracture and fatigue in applications ranging from pipelines and pressure vessels to stents and microelectronic circuits.


Welding consumables

The MI-21 database is your guide to welding consumables selection. This database allows you to compare details of current and past products, relate them to standard grades, and link to suppliers. Consumables can be traced by trade name, chemical composition and weld metal mechanical properties.

** Due to a technical reason, the MI-21 database is unavailable until further notice. However, if you have a question about welding consumables we can access the data and provide you with an answer. Please email **

Continue to Mi-21

For more information please email: