EntityQ664848· pop 6· linked from 100 articlesforming gasSign in to savemixture of hydrogen and nitrogenConnectionsironEntityhydrogenEntityoxygenEntitynitrogenEntitysteelEntityammoniaEntityredoxEntitycatalysisEntityweldingEntitycast ironEntityblast furnaceEntitysoldering or brazingEntityphotographic filmEntityastrophotographyEntityBessemer processEntityreducing agentEntityDamascus steelEntitypig ironEntityiron and steel industryEntitytemperingEntityCategoriesBrazing and solderingGasesIndustrial gasesMetal heat treatmentsWelding