About: http://webisa.webdatacommons.org/149703164

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	PTL 3 also discloses that a nitride such as TiN is produced by actively adding N (0.03 to 0.3% by mass) as an incidental impurity to improve the tensile strength of a weld metal.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com