What “the material” actually is
ニチノール is sold as grades, not as a single substance. Chemistry NiTi (~50/50 at.%), density ~6.45 g/cm³, heat band ~1310 °C.
This atlas treats ニチノール as a system: mill route, coatings, tests and the cavity it sits in.
基本データ
tunable transformationAf
SME + superelasticityEffect
A1 metalFire
Stent / archwireIcon
Allergy cautionNi
advancedFamily
ニチノール is one of 32 materials in this atlas, grouped under advanced: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare ニチノール with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.
深く読む
Deep dive: ニチノール
ニチノール (NiTi (~50/50 at.%)) is a family of grades whose density ~6.45 g/cm³, heat band ~1310 °C, and fire letter A1 metal.
Heat, fire and insulation
Conductivity note: ~10–18 W/m·K. Insulation score 12/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: A1 metal. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: NOL 1959 Buehler, United States. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: titanium.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 36/100. Ask which scrap, which certificate, which year.
プロファイル
強度
72
耐熱
50
火災性能
78
断熱
12
加工性
38
循環性
36
七つの章
よくある質問
Is ニチノール non-combustible?
Declared reaction class in this atlas: A1 metal. Assemblies still need resistance tests.
Does ニチノール insulate?
Thermal mark 12/100 versus the atlas. Conductivity note: ~10–18 W/m·K.
What is the density band?
~6.45 g/cm³
How is it made?
Origin story: NOL 1959 Buehler (United States).
Can it be recycled?
Circularity mark 36/100 — editorial, route-specific.
Typical melting or failure heat?
~1310 °C
What should it be paired with?
titanium: The medical metal without the phase trick.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
アイコン
NOL bar
United States · 1959
NOL bar is a reference point in the public image of ニチノール.
Orthodontic wire
Global · 1970s–
Orthodontic wire is a reference point in the public image of ニチノール.
Self-expanding stent
Global · 1990s–
Self-expanding stent is a reference point in the public image of ニチノール.
Cryofit coupling
United States · 1970s
Cryofit coupling is a reference point in the public image of ニチノール.
Eyeglass frames
Japan / US · 1980s–
Eyeglass frames is a reference point in the public image of ニチノール.
Guidewire
Global · 1990s–
Guidewire is a reference point in the public image of ニチノール.
Robotics spring
Labs · 2010s–
Robotics spring is a reference point in the public image of ニチノール.
Af DSC curve
Global · lab
Af DSC curve is a reference point in the public image of ニチノール.
アイコンのオンオフで、棒が選択内の首位に合わせて再スケールされる。
5 / 8
対戦
同じ家族、違う点数 — 一戦を選ぶ。
近い素材
六軸で最も近い隣人 — 強度、耐熱、火災、断熱、加工性、循環性。