tungsten
Let an agent explain tungsten as an element and material, relay its properties, uses, supply and trade information from reference and regulatory sources, and separate the metal from its carbide and other compounds.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain tungsten as an element and material, relay its properties, uses, supply and trade information from reference and regulatory sources, and separate the metal from its carbide and other compounds.
A hard, dense, grey metal, chemical element 74, with the highest melting point of all metals; obtained from wolframite and scheelite ores and used in cutting tools as tungsten carbide, in lamp filaments, electrical contacts, high-temperature alloys, radiation shielding and ammunition, and classified as a critical raw material in several economies.
What it is for: Hard and heat-resistant materials.
It can be explain properties and isotopes; explain uses and how it is produced; relay supply and criticality information; distinguish the metal from tungsten carbide.
Distinguishing features
Highest melting point among metals
Very dense and hard
Carbide is the main industrial form
Supply concentrated in a few countries
What it looks like
Grey-white lustrous metal, very heavy and hard.
Physical character
atomic number: 74
melting point: about 3422 degrees C - highest of all metals
density: about 19.3 g per cubic centimetre - similar to gold
How it is recognised
Element 74, very dense
Highest melting point of metals
Tungsten carbide is a compound used in tools
Related models
is a kind of - the classification
is used in - the main industrial product
is obtained from - the ores
is related to - supply policy
In practice
Families and kinds
tungsten metal
tungsten carbide and hard metals
tungsten alloys and heavy alloys
tungsten compounds such as tungstates
tungsten isotopes
Identifiers
chemical symbol W from wolfram
CAS number 7440-33-7
Standards and regulation
Conflict minerals rules covering tungsten in the US and EU
Critical raw material lists
Occupational exposure limits for tungsten and cobalt hard metal dust
Failure modes and hazards
Hard metal lung disease from carbide and cobalt dust
Supply disruption
Conflict minerals sourcing issues
Confusing tungsten with tungsten carbide
Also called
+13
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.tungsten
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Element What tungsten is.
Chemistry.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties and isotopes of tungsten? definition
- Is the question about the metal, the carbide or a compound? boundary
Production
Ores and production.
Production
Production.
- Where is tungsten mined, and how is it refined? provenance
- Which entry fits tungsten mining? action
Use Applications.
Uses.
Applications
Uses.
Applications
Applications.
- How is tungsten used in tools, filaments, alloys and shielding? provenance
- Which entry fits tungsten carbide? action
Supply
Supply and trade.
Supply
Supply.
- What are production volumes, producers and criticality assessments, with sources? measurement
- Which sources and years are cited? provenance
Rules Regulation and safety.
Regulation.
Sourcing
Conflict minerals.
Sourcing
Sourcing.
- What due diligence rules apply to tungsten sourcing? provenance
- Which entry fits conflict minerals? action
Health
Occupational health.
Health
Health.
- What health hazards arise from tungsten and hard metal dust, and what limits apply? provenance
- Is the question about a specific workplace, which needs its safety officer? boundary
Context History and research.
Context.
History
Discovery and names.
History
History.
- How was tungsten discovered, and why does it have two names? provenance
- Which references are standard? provenance
Research
Research.
Research
Research.
- What research involves tungsten, such as fusion reactor walls and recycling? provenance
- Which entry fits fusion materials? action
What the second pass must settle
- Should tungsten carbide be a separate entry?
- How should supply and trade data be linked?
- The registry entry has merged isotope aliases; should they be split off?