[[Gambar:Steel wire rope.JPG|thumb|right|Waja ingkang wujudipun gulungan kabel]]
'''Waja''' inggih punika logam campuran [[wesi]] lan [[karbon]]. Bahan ingkang kangge damel baja inggih punika [[wiji wesi]].<ref name="internet1"/> Bahanipun waja meh sedayasadaya sami homogenitasipun[[homogenitasipun]], saking unsur [[Fe]] ingkang wujudipun [[kristal]] lan unsur [[C]].<ref name="internet2">{{id}}[http://docs.google.com/viewer?a=v&q=cache:WJavH2Izs-gJ:repository.binus.ac.id/content/S0094/S009413522.ppt+pengertian+baja&hl=id&gl=id&pid=bl&srcid=ADGEEShJt7tiXsmLN5KzS8U96o_HarsFW67yLYmn3yeqUSzxfvQX6Ig9bIYEMvU--ExAmeCNlQun2lsKRb1CJE4f41mV9DOY9f3wMzKybDFb69CdqEOj16fCuAVhID3RTm8rukLtcnDN&sig=AHIEtbR3GCbVWYe8nWw_jwfOta1njMFLgA Struktur Baja](dipunundhuh tanggal 11 Juni 2011)</ref>
