Max Diedering
Metallographer, Management laboratory-Services
Senior-Expert for Metallography & refractometry

+49 8106 9941 14


Simon Löhe
Metallographer, group leader of Laboratory-Services Munich
Expert in failure analysis and metallography
+49 8106 9941 17


Robert Mertel
Graduate Engineer Materials Science
Expert metallic materials & failure analysis

+49 8106 9941 16


Damage to welding seams

Defective welded joints

The causes of faulty welded joints can be many and varied: Common reasons are insufficient weld preparation, incorrect selection of filler materials, failure to observe material behaviour, incorrect material combinations or failure to observe heat treatments.

Other typical faults are:

  •     Cardboard joints
  •     Solidification cracks
  •     Shrinkage
  •     Hardening
  •     Undesirable microstructure formation

All these faults or an unforeseen use of the component can lead to various consequential damages in later operation. The most common of these are fractures and corrosion damage.

Our experts and laboratory specialists identify the faults and advise on fault prevention.

Typical examination methods are metallography and hardness testing.

Farbätzung Barker Schweißnaht mit Lunker
Farbätzung Barker Schweißnaht mit Lunker
Querschliff Schweissnaht
Querschliff Schweissnaht
Schäden an Schweissverbindungen
Schäden an Schweissverbindungen
Verbindungsfehler Schweissnaht
Verbindungsfehler Schweissnaht

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München

Tel. +49 8106 994110
Fax +49 8106 994111

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl