NiTi (~50/50 at.%)
ChemistryНитинол is specified as NiTi (~50/50 at.%). Density band ~6.45 g/cm³.
What holds Нитинол together is not the nickname. Formula NiTi (~50/50 at.%), density ~6.45 g/cm³.
Meters are atlas-relative. Grades are the SKUs buyers write.
Фазы
Microstructure
OrderProcessing sets grain, crystallinity or fibre orientation — the reason two lots of Нитинол can test differently.
Interfaces
SurfacesCoatings, oxide films, sizings or paper faces often decide weather and fire behaviour more than the bulk brochure.
Defects
FlawsInclusions, voids, knots, pinholes or residual stress start the failures that mill certificates do not list.
Grades
VariantsНитинол is a family. Grade names below are the ones buyers actually write on RFQs.
Ageing
TimeMoisture, UV, creep, hydrogen or carbonation shift properties in service. Design to the aged state.
Относительные шкалы
Strength72
Strength is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Heat envelope50
Heat envelope is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Fire behaviour78
Fire behaviour is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Insulation12
Insulation is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Workability38
Workability is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Circularity36
Circularity is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Марки
Superelastic body-temp
Stents, wires.Stents, wires.
SME actuator
High Af.High Af.
F2063 wrought
Implant mill product.Implant mill product.
Drawn filled tube
DFT composites.DFT composites.
Sputtered thin film
MEMS.MEMS.
Связи
Primary bonding
Нитинол holds together by ionic/covalent networks.
Secondary forces
Hydrogen bonds, van der Waals stacks or grain-boundary cohesion set toughness and moisture uptake.
Composites & fills
Fillers, fibres, plasticisers or aggregates are part of the real product, not impurities.
Environment film
Oxides, chars, sizings or paints are the layer the world actually meets.
Change the grade, the coating or the moisture and you have a different material with the same English name.
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Углеволокно
Полимерные нити с графитоподобными слоями: авиа и велосипеды; горит смола.
Итого 49 ⬡Графен
Один атомный слой углерода: Нобель, хайп композитов, немного честных применений.
Итого 50 ☁️Аэрогель
Наногубчатый кремнезём: λ среди самых низких; хрупок без холста.
Итого 60 ☀️Перовскит
Галогениды ABX3, взвинтившие лабораторный КПД — влага, свинец, ресурс.
Итого 26