Super-Nilvar Low ExpanPower Transmission Parts sion Alloy wireSuper-Nilvar is also called the Super - Invar alloy.In 60 ~ 80 temperature range, low expansion coefficient, the alloy is mainly used in the manufacture of requirements in the environmental temperature change range size high precision instrument parts.Application and special requirements
Super-Nilvar alloy is typical of low expansion alloy, via air factory use for a long time, stable performance.Mainly used in the manufacture of highly accurate within the scope of environmental temperature change size precision components.In use should be strictly controlled heat treatment process and processing technology, according to the using temperature must be strictly check the organization stability.Chemical Composition in %, InvarbrandChemical compositionNiMnCoCuFeCPSiS≤Super-Nilvar31.5~33.00.20~0.603.2~4.20.4~0~0.80Bal0.050.020.020.02
Basic physical constants and mechanical properties of the alloy:
Density: γ = 8,1 g / cm3;
Electric resistivity: ρ = 0,77 ohm mm2 ? / m;
The temperature of the Curie point: Θs = 220 ° C;
Typical expansion character(10 -6 / ºC )Temperature range20~6020~5020~10020~15020~20020~25020~30020~40020~50020~600Expansion coefficient-0.900.50.91.42.03.24.97.79.610.8
Varieties Steel typeSpecifications
mmPrecision
alloyResistance Alloys for electrical heatingSuper alloyWelding wireCorrosion resistant
alloyRodshot rolling rodsΦ8~38mmavailableavailableavailableCold-drawn rods≤50mmavailableavailableavailableForged rodsΦ38~350mmavailableavailableavailableWiresRound wiresΦ0.3~8mmavailableavailableavailableavailableavailableNoUniversal Hardware Parts n-circle wiresNegotiationavailableavailableavailableStripsCold rolling0.15~4x200mmavailableavailableavailableavailableHot rolling4~22x200mmavailableavailableavailableavailablePlatesCold rolling0.5~4x1000x2000mmavailableavailableavailableHot rolling4~22x1000x2000mmavailableavailableavailabletubesΦ4~63x0.5~5mmavailableavailableExecutive standard: GB, GJB, HB, YB, ASTM, AMSE, negotiation and so on.