Ti (α/β alloys)
Chemistryチタン is specified as Ti (α/β alloys). Density band 4.51 g/cm³.
What holds チタン together is not the nickname. Formula Ti (α/β alloys), density 4.51 g/cm³.
Meters are atlas-relative. Grades are the SKUs buyers write.
段階
Microstructure
OrderProcessing sets grain, crystallinity or fibre orientation — the reason two lots of チタン 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
Variantsチタン 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.
相対メーター
Strength86
Strength is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Heat envelope78
Heat envelope is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Fire behaviour80
Fire behaviour is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Insulation14
Insulation is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Workability42
Workability is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Circularity48
Circularity is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
等級
Grade 2 CP
Formable, corrosion workhorse.Formable, corrosion workhorse.
Grade 5 Ti-6-4
α+β airframe and implants.α+β airframe and implants.
Grade 23 ELI
Extra-low interstitial medical.Extra-low interstitial medical.
Ti-6-2-4-2
High-temp aero.High-temp aero.
Beta-C
High-strength β alloys for springs.High-strength β alloys for springs.
結合
Primary bonding
チタン holds together by metallic bonding.
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.