This is the fourth volume inthe well-established series of compendiums devoted to the subject of weld hotcracking. It contains the papers presented at the 4th InternationalCracking Workshop held in Berlin in April 2014. In the context of thisworkshop, the term “cracking” refers to hot cracking in the classical andprevious sense, but also to cold cracking, stress-corrosion cracking andelevated temp. solid-state cracking.  A variety of different crackingsubjects are discussed, including test standards, crack prediction, weldabilitydetermination, crack mitigation, stress states, numerical modelling, andcracking mechanisms.  Likewise, many different alloys were investigatedsuch as aluminum alloys, copper-aluminum dissimilar metal, austenitic stainlesssteel, nickel base alloys, duplex stainless steel, creep resistant steel, andhigh strength steel.