Porowhitangā wāhanga whakamahana hikohe mea hanga ki ngā porowhita porotaka i hangaia e tētahi, e rua rānei ngā waea ātete i hangaia ki te koranu e tika ana, i runga anō i te whakamahinga.
Ko ōna āhuatanga matua ko te whakaurunga o te huānga whakamahana waea koranu nikara-kōroma me te kumetanga kua whakaritea o te -230 V.
Ko ngā whakamahinga noa ko: ngā whakamaroke ahumahi, ngā whakamahana hau, ngā oumu, me ētahi atu.
Heoi anō, e ai ki te waea koranu kei roto i a rātou, e toru ngā momo tauira ka taea te wehewehe:

• Ngā tauira M, he kounga 20-5, ā, he mea hanga mō ngā oumu te nuinga.
• Ngā tauira MS, he kounga 80-20, ā, he whai hua mō ngā tono katoa.
• Ngā tauira MC, me te kounga 20-5, ā, e whakamahia ana i roto i ngā ngongo kuata me te ngongo pūwhero.
• Whakaahuatanga Hua
  Tau: Ni80Cr20 ,ka karangahia ano ko Nikrothal 8,MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel A,Alloy A,N8,Resistohm 80, Stablohm 650,Nichorme V,Nikrothal 80 etc.Ihirangi Matū (%)

  C	P	S	Mn	Si	Cr	Ni	Al	Fe	Ētahi atu
  Teitei
  0.03	0.02	0.015	0.60	0.75~1.60	20.0~23.0	Para.	Teitei 0.50	Mōrahi 1.0	-

  Ngā Āhuatanga Hangarau o te waea nichrome

  Te pāmahana ratonga tonu mōrahi:	1200ºC
  Ātete 20ºC:	1.09 ohm mm2/m
  Kiato:	8.4 karamu/cm3
  Te Arahi Wera:	60.3 KJ/m·h·ºC
  Tauwehenga o te Whakawhanuitanga Wera:	18 α×10-6/ºC
  Te Pūwāhi Rewa:	1400ºC
  Te roa:	20% iti rawa
  Hanganga Moroiti:	Austenite
  Āhuatanga Aukume:	kore-aukume

  Ngā Tauwehenga Pāmahana o te Ātete Hiko

  20ºC	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
  1	1.006	1.012	1.018	1.025	1.026	1.018
  700ºC	800ºC	900ºC	1000ºC	1100ºC	1200ºC	1300ºC
  1.01	1.008	1.01	1.014	1.021	1.025	-

  Rahi noa o te waea koranu nikara:

  Ka tukuna e mātou ngā hua i te āhua o te waea, te waea papatahi, te waea rīpene. Ka taea hoki e mātou te hanga rauemi ritenga kia rite ki ngā tono a te kaiwhakamahi.

  Waea kanapa, mā–0.025mm~3mm

  Waea whakapūkara: 1.8mm~10mm

  Waea waikura: 0.6mm ~ 10mm

  Waea papatahi: matotoru 0.05mm~1.0mm, whānui 0.5mm~5.0mm