0cr21al6nbalwminiwm ffero cromgwifren gwanwyn ffwrnais ddiwydiannol
Gradd:
FeCrAl:1Cr13AI4, 0Cr19AI2, 0Cr15AI5, 0Cr20AI5, 0Cr25AI5, 0Cr21AI6 Nb,OCr27Al7Mo2
Ni-Cr: Cr20Ni80, Cr15Ni60, Cr20Ni35, Cr25Ni20 ac ati.
Manganin: 6J12, 6J8, 6J13
Constantán:6J40
Constantan newydd: 6J11
Maint:
Diamedr gwifren gwrthiant 0.05—10mm
Trwch stribed gwrthiant 0.56—5mm, lled 6—50mm
Trwch gwifren stribed gwrthiant 0.1—0.6mm, lled gwifren stribed 1—6mm
Trwch ffoil ymwrthedd rholio oer 0.05—3mm, lled stribed 4—250mm
150 0000 2421