steel
Let an agent explain steel and its grades and properties, describe production and processing, support selecting steels for applications, and describe the industry, recycling and history.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What steel is.
Composition
Composition and properties.
Composition
Composition.
- How do carbon content, alloying elements and microstructure determine the properties of steel? definition
- How does steel differ from cast iron and wrought iron? definition
Grades
Grades and families.
Grades
Grades.
- What are carbon, alloy, stainless, tool, microalloyed, dual-phase and maraging steels, and how are grades designated? provenance
- Which entry fits a specific grade? action
Use Selecting and processing.
Select
Selecting steel.
Select
Selection.
- Which steel suits this application given strength, toughness, corrosion and cost, under applicable standards? action
- Which entry fits a design code? action
Process
Processing and heat treatment.
Process
Processing.
- How are steels rolled, forged, welded and heat treated, and how does this change properties? provenance
- Which entry fits heat treatment? action
Industry Production and sustainability.
Production
Steelmaking.
Production
Production.
- How is steel made in blast furnace and electric arc routes, and how is the industry structured globally? provenance
- Which entry fits steelmaking? action
Sustainability
Emissions and recycling.
Sustainability
Sustainability.
- What are the carbon emissions of steel, how is it recycled, and what decarbonisation routes are being developed, with positions attributed? provenance
- Which findings are uncertain? boundary
Learn History and teaching.
History
History of steel.
History
History.
- How did steel develop from ancient crucible and wootz steels to Bessemer, open hearth and modern processes? provenance
- Which references are standard? provenance
Teach
Teaching.
Teach
Teaching.
- How can steel metallurgy be taught? action
- Which misconceptions arise? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- steadite, alloy steel, dual-phase steel, Maraging steel, Microalloyed steel, chromium-vanadium steel, low-alloy steel, high-alloy steel, 41xx steel, sheet steel, Europa-Profil I, manganese steel
What it is Filled
An alloy of iron with a small amount of carbon and often other elements, produced by refining iron and adjusting composition, in grades from plain carbon steels to alloy, stainless, tool, microalloyed, dual-phase, chromium-vanadium and maraging steels, and shaped by casting, rolling, forging and heat treatment; steel is the most widely used engineering material for construction, vehicles, machinery, tools and packaging, is produced by a global industry, and is recycled extensively.
Why it exists Filled
Let an agent explain steel and its grades and properties, describe production and processing, support selecting steels for applications, and describe the industry, recycling and history.
Distinguishing features Filled
- Iron-carbon alloy
- Heat treatable
- Grade systems
- Recyclable
What robots and AI may and may not do Filled
Must not
- Substitute a steel grade lower than specified in a structural or pressure application.
- Falsify or reuse mill certificates.
- Cut, weld or heat steel near people without required guarding and fire precautions.
- Approve a corroded or cracked load-bearing steel member as sound without assessment.
Only with a human decision
- Accepting non-conforming steel into a structure.
- Taking a load-bearing steel member out of service.
May
- Identify steel grades from markings, certificates and test results.
- Inspect steel structures and parts for corrosion, cracks and deformation.
- Check that a steel product's certificate matches the specification ordered.
Moral aspects Filled
- Steel quality failures cause bridge, building and vessel collapses that kill people.
- Steelmaking is a major source of emissions and workplace injuries.
Who is affected
- Users of structures
- Steel workers
- Communities near steelworks
Owners Filled
Steward
The producer or owner of each piece; the engineer of record answers for its use in a structure.
Links to other meta-models Filled
parent
- Q907347 - registry parent class
related
- ferroalloy - category
- blacksmith - forging steel
- pipe - steel pipes
- recycling - steel recycling
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.steel
- Wikidata: Q11427 (https://www.wikidata.org/wiki/Q11427)
Direct properties required Filled
- Density: Approximately 7800-8000 kg/m3 - Common engineering steels have densities in this approximate range at room temperature, with variation by alloy composition.
- Young's modulus: Approximately 190-210 GPa - Common engineering steels have elastic stiffness in this approximate range at room temperature.
- Yield strength: MPa - Yield strength is determined by tensile testing using the grade's specified yield or proof stress criterion.
- Thermal conductivity: W/(m K) - Thermal conductivity is measured under a known temperature gradient and varies substantially between carbon and stainless steels.
Recognition required Filled
- Iron alloyed with carbon
- Many grades
- Cast iron has more carbon; wrought iron has almost none
- Grey metal in bars, sheets, beams, wire and castings.
Capabilities and actions required Filled
- explain grades and properties
- describe production
- support selection
- describe industry and history
Hazards and failure modes required Filled
- Corrosion
- Fatigue and brittle fracture
- High carbon emissions in production
Standards and interfaces required Filled
- Steel grade standards such as EN, ASTM and JIS
- Structural design codes
- Emissions regulations for steelmaking
Context of use required Filled
- Iron-carbon alloys for engineering.
- carbon steels
- alloy and microalloyed steels
- stainless steels
- tool and high-strength steels such as maraging
- special steels such as dual-phase and chromium-vanadium
Sources Filled
- Wikidata item Q11427: steel - identity and sense of the item
- Wikipedia: Steel - general description of the item
Open questions
- Should each steel family be a separate entry?
- How should grade standards be linked?
- How should decarbonisation research be linked?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q11427/spec.json