About: http://webisa.webdatacommons.org/157862041

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	Carbon is an additive to ensure hardness and abrasion resistance of the contact surface at the desired level.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de