Wareegwalxaha kuleyliyaha korontadawaxay ka kooban yihiin wareegyo dhululubo ah oo ay sameeyeen hal ama laba fiilooyin iska caabin ah oo daawaha ku habboon ku xiran codsiga.
Astaamaha ugu muhiimsan waxaa ka mid ah ku darista qalabka kululaynta ee siligga daawaha nickel-chrome iyo xiisad caadi ah oo ah -230 V.
Codsiyada caadiga ah waa: qalajiyeyaasha warshadaha, kuleyliyeyaasha hawada, shooladaha, iwm.
Intaa waxaa dheer, iyo sida ku cad siligga daawaha ee ay ka kooban yihiin, waxaan kala saari karnaa saddex nooc oo moodallo ah:

• Moodooyinka M, oo leh tayo 20-5 ah oo inta badan loogu talagalay shooladaha.
• Moodooyinka MS, oo leh tayo 80-20 ah oo waxtar u leh dhammaan codsiyada.
• Moodooyinka MC, oo leh tayo 20-5 ah oo loo isticmaalo tuubooyinka quartz iyo infrared.
• Sharaxaadda Badeecada
  FasalNi80Cr20, sidoo kale loo yaqaan Nikrothal 8,MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel AAlloy A, N8, Resistohm 80, Stablohm 650, Nichorme V, Nikrothal 80 iwm.Waxyaabaha Kiimikada (%)

  C	P	S	Mn	Si	Cr	Ni	Al	Fe	Kale
  Ugu badnaan
  0.03	0.02	0.015	0.60	0.75~1.60	20.0~23.0	Bal.	Ugu badnaan 0.50	Ugu badnaan 1.0	-

  Sifooyinka Farsamada ee fiilada nichrome

  Heerkulka Adeegga Joogtada ah ee Ugu Badan:	1200ºC
  Adkeysiga 20ºC:	1.09 ohm mm2/m
  Cufnaanta:	8.4 g/cm3
  Qaboojinta Kulaylka:	60.3 KJ/m·h·ºC
  Isugeynta Ballaarinta Kulaylka:	18 α × 10-6/ºC
  Barta Dhalmada:	1400ºC
  Kordhinta:	Ugu yaraan 20%
  Qaab-dhismeedka Micrographic:	Austenite
  Hantida Birlabta:	aan birlab ahayn

  Arrimaha Heerkulka ee iska caabinta korantada

  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	-

  Cabbirka caadiga ah ee siligga daawaha nikkel:

  Waxaan ku bixinnaa alaab qaab silig ah, silig fidsan, iyo xarig. Waxaan sidoo kale samayn karnaa agab loo habeeyey iyadoo loo eegayo codsiyada isticmaaleyaasha.

  Silig dhalaalaya oo cad - 0.025mm ~ 3mm

  Silig lagu shubo: 1.8mm ~ 10mm

  Silig Oxidized: 0.6mm ~ 10mm

  Silig fidsan: dhumucdiisuna waa 0.05mm ~ 1.0mm, ballackeeduna waa 0.5mm ~ 5.0mm