FAQ > Glossary of Terms > D Series > Discoloration (Welding)

A Series , B Series , C Series , D Series , E Series , F Series , G Series , H Series , I Series , K Series , L Series , M Series , N Series , O Series , P Series , Q Series , R Series , S Series , T Series , U Series , V Series , W Series , X Series , Y Series , Z Series

D5W(5 D/W), Dalton, Data Integrity, Data Migration, DDC(Direct Digital Control), D Value, Dead Leg, Decontamination, Deflagration, Degrading, Deionization, Deletion Map, De Minimis Release, Dementia, Demineralization, Denaturation, Dent, Depyrogenation, Desalination, Design Condition, Design Specification, Dessicant, Dessicators, Detonation, Deuteromycetes, DHL Vaccine, Diagnostic, Dialysis, Diatom, Diatomaceous Earth Diatomite(Kiselguhr(DE)), Diffusion, Digestion, Digital, Digital Certificate, Digital Representation, Digital Signature, Dilution, Dilution Factor, Diploid, Diplophase, Direct Impact System, Disaster, Discoloration(Welding), Disinfection, Dispensing, Dissimilation, Dissolved Solids, Distillation, DNA(Deoxyribonucleic Acid), DNAse(Deoxyribonuclease), DNA Arrary, DNA Replication, DNA Sequence, DNA Vector, Domain, Dominant Allele, DOP(Dioctyl Phthalate/Dispersed Oil Particulate), Dosage Form, Dosage Group, Double Blind Test, Drugs, Drug Product, Drug (Medicinal) Product, Durability, Dry Air, Dry Heat Sterilization, Dust, Dynamic Condition

Learn About Deadly Cancer Mesothelioma due to Asbestos Exposure, it can affect any one in the world

Discoloration (welding)
Any change in surface color from that of the base metal. Usually associated with oxidation occurring on the weld and heat affected zone (HAZ) on the outside diameter and inside diameter of the weld joint as a result of heating the metal during the welding. Colors may range from pale bluish-gray to deep blue, and from pale straw color to a black crusty coating