Sulphur signa agentibus carburizing
In mensura sulphuris carburantis, sulpuris contentum carburantis lato sensu dividi potest in altum sulphur, medium sulphur, sulphur humile, sulphur ultra-humile.Sulphur altum generaliter significat sulphuris contentum supra 2.0% Medium sulphur plerumque refert ad contentum sulphuris 1.0% – 2.0% L..