This is the fourth volume in§the well-established series of compendiums devoted to the subject of weld hot§cracking. It contains the papers presented at the 4th International§Cracking Workshop held in Berlin in April 2014. In the context of this§workshop, the term "cracking" refers to hot cracking in the classical and§previous sense, but also to cold cracking, stress-corrosion cracking and§elevated temp. solid-state cracking. A variety of different cracking§subjects are discussed, including test standards, crack prediction, weldability§determination, crack mitigation, stress states, numerical modelling, and§cracking mechanisms. Likewise, many different alloys were investigated§such as aluminum alloys, copper-aluminum dissimilar metal, austenitic stainless§steel, nickel base alloys, duplex stainless steel, creep resistant steel, and§high strength steel.