procedure will be not necessary to avoid any hydrogen embrittlement. To help reduce the risk of hydrogen embrittlement, we strongly suggest that our customers abide by ASTM standard B850-98 (reapproved: 2009), for relief baking times. and Surf. Hydrogen codeposition can occur in the plating process either during the actual electrolytic deposition or during the cleaning and acid pickles preceding the plating bath. PEDAN, Hydrogen embrittlement test methods..... 19 10. 3 V.N. Methods of overcoming this are suggested. Hydrogen embrittlement (HE) also known as hydrogen assisted cracking (HAC) and hydrogen-induced cracking (HIC), describes the embrittling of metal after being exposed to hydrogen. It is important that our customers indicate to us at the time of the order, the correct hardness level of the steel part(s) as well as the correct bake time that is desired. It is a complex process that is not completely understood because of the variety and complexity of mechanisms that can lead to embrittlement. It is diffusible hydrogen that is harmful to the toughness of iron. A brief review is given of hydrogen embrittlement of zinc-coated steel. Low Hydrogen Embrittlement Zinc-Nickel Electroplating: An Alternative to Cadmium-Update 840815 A zinc-nickel (Zn-Ni) alloy electroplating process has been developed which provides equivalent or superior performance to cadmium (Cd) plating in the following areas: corrosion protection, low hydrogen embrittlement, lubricity, torque tension, installation force, and electrical conductivity. Much of the steel that is electroplated is higher carbon grade and, thus, possibly subject to this problem. ASTM F16 determined that this was an environmental hydrogen embrittlement (EHE) ... was that the cause of HE and cracking of the subsea bolts was one where the zinc plating was transferring hydrogen to the substrate of the bolt and was able to do this because of the CP pulse that was present in the water. for Mechanical Hydrogen Embrittlement Evaluation of Plating/Coating Processes and Service Environments); and ASTM F1624-09 (Standard Test Method for Meas-urement of Hydrogen Embrittlement Threshold by the Incremental Step Loading Technique). KUDRYATSEV and K.S. Fin., 83, 70(Sept. 1996). Prevention of Hydrogen Embrittlement in Steels H. K. D. H. Bhadeshiaa aMaterials Science and Metallurgy, University of Cambridge,U.K Abstract The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. Most of the steel that is hot dip galvanized is low carbon grade and, as such, little if any hydrogen embrittlement is incurred. REFERENCES 1 ASTM F 519: Standard Test Method for Mechanical Hydrogen Embrittlement Evaluating of Plating Processes and Service 2 W. PAATSCH, Plat. Baking ... Cathodic hydrogen absorption occurs in the presence of metallic coatings such as zinc or cadmium that are designed to sacrificially corrode to protect a steel fastener from rusting. It is readily removed from the metal lattice by baking the product immediately after plating. The Bottom Line Although many of the most severe problems associ- ated with hydrogen embrittlement have occurred with … As such, hydrogen embrittlement is a concern even in electroless plating processes. Ongoing experiments should prove this in near future. They felt that any cathodic protective system that combined these two would …