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⚙️ Metals

✈️Titanium

High specific strength and chloride-tolerant films — airframes, implants and seawater.

Also called: titanium alloy · Ti-6Al-4V · unalloyed titanium

Titanium — Wikimedia lead image
Alchemist-hp ( pse-mendelejew.de ) · CC BY-SA 3.0
At a glance
Score intensity

Darker cells mean a higher score for this topic on that metric.

Score profile

Each bar is a 0-100 atlas score for this topic, not a timeline.

867880144248
Fire
Heat
Specs
Timeline

Milestones in order. This is history, not a weekly activity grid.

1791 Gregor mineral1910 Hunter process1940 Kroll process1950s Jet age1952 Ti-6Al-4V1960s SR-71 skin1970s CP grades1990s Medical ASTM F1362010s Additive Ti2020s Sponge bottlenecks
  1. Gregor mineral
  2. Hunter process
  3. Kroll process
  4. Jet age
  5. Ti-6Al-4V
  6. SR-71 skin
  7. CP grades
  8. Medical ASTM F136
  9. Additive Ti
  10. Sponge bottlenecks
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18 min read

Last reviewed Sources & creditsMedia creditsMethodology

heat 78 · fire 80

Start with this section - Origins & milestones

Fire role or insulation role

Pick the fire-performance reading or the insulation reading already scored on this material. Teaching marks — not a specification.

Atlas scores and on-page facts only. A named product test, thickness and assembly decide any real wall or garment. No lab stamp.

Open compare lab

Quick facts

4.51 g/cm³Density
1668 °CMelting
Ti-6Al-4VStar alloy
A1 / powder riskFire
Kroll Mg reductionProcess
metalsFamily

Titanium is one of 32 materials in this atlas, grouped under metals: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.

Scores compare Titanium 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.

Deep introduction

Deep dive: Titanium

Titanium (Ti (α/β alloys)) is a family of grades whose density 4.51 g/cm³, heat band 1668 °C, and fire letter A1 metal.

What “the material” actually is

Titanium is sold as grades, not as a single substance. Chemistry Ti (α/β alloys), density 4.51 g/cm³, heat band 1668 °C.

This atlas treats Titanium as a system: mill route, coatings, tests and the cavity it sits in.

Heat, fire and insulation

Conductivity note: ~22 W/m·K. Insulation score 14/100 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: Kroll process 1940, Luxembourg / US. The process chapter follows feedstock → conversion → forming → finish → install.

Uses span buildings to defence / safety. Pairings matter: steel.

Market and circularity

Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.

Circularity mark 48/100. Ask which scrap, which certificate, which year.

The profile

867880144248
Strength 86
Heat resistance 78
Fire performance 80
Insulation 14
Workability 42
Circularity 48

Fire role or insulation role

Pick the fire-performance reading or the insulation reading already scored on this material. Teaching marks — not a specification.

Atlas scores and on-page facts only. A named product test, thickness and assembly decide any real wall or garment. No lab stamp.

Seven chapters

Fire mark or insulation mark first?

Decision walkthrough on Titanium: fire 80, insulation 14, and one fact already on file — not a code stamp.

  1. Read the fire-performance mark — Fire on this hub is 80/100 — teaching comparison among atlas materials.
  2. Read the insulation mark — Insulation is 14/100 — heat-flow story, not the same question as flame.
  3. Sit one published fact beside them — Quick fact on file: Density: 4.51 g/cm³.
  4. Sustainability is not a fire skip — A high sustainability mark does not replace fire protection in a real assembly.
  5. Not a building-code rating — Named tests, thickness and build-up still decide compliance — this page is literacy only.

On Titanium, fire 80 and insulation 14 answer different jobs; Density: 4.51 g/cm³ grounds one real detail.

Editorial atlas marks. Not a code certificate or product approval.

Thermal mark or safety fact first?

Second lab decision on Titanium: heat-resistance 78 beside published thermal fact Conductivity — literacy, not a code stamp.

  1. Read the heat-resistance mark — Heat resistance on this hub is 78/100 — a thermal story, different from the fire/insulation pair.
  2. Sit one thermal fact beside it — Properties chapter lists Conductivity among published thermal rows.
  3. Heat resistance is not a fire skip — A high thermal mark does not replace named fire tests in a real assembly.
  4. Still not a building-code rating — Thickness, build-up and named tests decide compliance — this page teaches axes only.

On Titanium, heat 78 and Conductivity are a second thermal/safety reading after fire vs insulation.

Editorial atlas marks. Not a code certificate or product approval.

Heat line to keep

Choose the heat reading for Titanium.

Keep heat resistance 78.

A decision from printed marks. Not a building permit.

Frequently asked questions

Is Titanium non-combustible?
Declared reaction class in this atlas: A1 metal. Assemblies still need resistance tests.
Does Titanium insulate?
Thermal mark 14/100 versus the atlas. Conductivity note: ~22 W/m·K.
What is the density band?
4.51 g/cm³
How is it made?
Origin story: Kroll process 1940 (Luxembourg / US).
Can it be recycled?
Circularity mark 48/100 — editorial, route-specific.
Typical melting or failure heat?
1668 °C
What should it be paired with?
steel: Cheaper mass where density is allowed.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
Is the fire-performance score a building-code rating?
No. It is an editorial 0–100 teaching mark among materials in this atlas. A real wall or garment needs a named product test, thickness and assembly. This page is not a lab stamp.
When should I read insulation instead of fire?
Use the insulation pick when the question is heat flow — lining, loft, or a cold-bridge — and the fire pick when the question is how the same material behaves in flame. Both numbers already sit on this hub; they answer different jobs.
Does a high sustainability score mean I can skip fire protection?
No. Sustainability here is a relative atlas mark (growth, reuse, embodied story). Bamboo and timber can still char like wood. Fire protection stays a separate specification.
Why is bamboo missing in some languages?
A language URL is published only when the seven chapters are real prose in that language. Bamboo exists in English, Korean, Japanese, Chinese and Spanish. French, German, Portuguese and Russian stay withheld — earlier machine drafts leaked English, so those URLs are not opened.

Icons

1

Kroll process

Luxembourg · 1940–

Kroll process is a reference point in the public image of Titanium.

2

Ti-6Al-4V

United States · 1952–

Ti-6Al-4V is a reference point in the public image of Titanium.

SR-71

SR-71

United States · 1964–1998

SR-71 is a reference point in the public image of Titanium.

Hip implant stem

Hip implant stem

Global · 1960s–

Hip implant stem is a reference point in the public image of Titanium.

Golf club lore

Golf club lore

Japan / US · 1990s

Golf club lore is a reference point in the public image of Titanium.

Submersible hulls

Submersible hulls

US / RU · 1960s–

Submersible hulls is a reference point in the public image of Titanium.

7

Bike frames

United States · 1980s–

Bike frames is a reference point in the public image of Titanium.

Heat exchanger CP

Heat exchanger CP

Global · 1970s–

Heat exchanger CP is a reference point in the public image of Titanium.

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Head-to-head

Same family or rival physics — pick a duel.

Similar materials

Closest neighbours on the six atlas axes — strength, heat, fire, insulation, workability and circularity.

More in Metals