# AlloyFYI

> Comprehensive metal alloy reference — alloys across 14 metal bases (steel, stainless steel, aluminum, copper, titanium, nickel, and more), organized by alloy families, with 6-axis rating system (strength, corrosion, weight, machinability, cost, temperature), composition data, mechanical and physical properties, and industrial applications.

## Data Scope
- Metal alloys across 14 base metals with detailed composition data (JSON)
- Alloy families with designation systems (AISI/SAE, AA, UNS, EN, JIS, DIN, ASTM)
- 6-axis rating system: strength, corrosion resistance, weight, machinability, cost, temperature
- Mechanical properties: tensile/yield strength, elongation, hardness (Brinell/Rockwell), elastic modulus
- Physical properties: density, melting point, thermal conductivity, electrical resistivity
- Industrial applications across 12 industries (aerospace, automotive, marine, medical, etc.)
- Alloy comparisons (N² pages) with side-by-side property analysis
- Glossary terms with category organization
- Guides in series with full markdown content
- Interactive tools: material selector, alloy comparator, hardness converter, and more
- 15 languages supported with i18n

## URL Patterns
- Append `.md` to any URL for plain-text markdown format.
- i18n: URL prefix `/{lang}` for non-English (ko, ja, zh-hans, es, fr, de, pt, ru, vi, tr, ar, hi, th, id).
- `/` — Homepage with featured alloys and stats (e.g. `/`)
- `/alloys/` — Browse all alloys (e.g. `/alloys/`)
- `/alloys/{slug}/` — Alloy detail page (e.g. `/alloys/stainless-steel-304/`)
- `/compare/` — Alloy comparison index (e.g. `/compare/`)
- `/compare/{slug_a}-vs-{slug_b}/` — Alloy comparison (e.g. `/compare/304-vs-316/`)
- `/families/` — Browse alloy families (e.g. `/families/`)
- `/families/{slug}/` — Alloy family detail (e.g. `/families/austenitic-stainless-steel/`)
- `/metals/` — Browse by metal base (e.g. `/metals/`)
- `/metals/{base}/` — Metal base detail (e.g. `/metals/titanium/`)
- `/applications/` — Industrial applications (e.g. `/applications/`)
- `/applications/{slug}/` — Application detail (e.g. `/applications/aerospace/`)
- `/glossary/` — Metallurgy glossary (e.g. `/glossary/`)
- `/glossary/{slug}/` — Glossary term (e.g. `/glossary/austenite/`)
- `/guides/` — Alloy guides (e.g. `/guides/`)
- `/guides/{slug}/` — Guide article (e.g. `/guides/introduction-to-stainless-steel/`)
- `/tools/` — Interactive alloy tools (e.g. `/tools/`)
- `/tool/{slug}/` — Tool page (e.g. `/tool/material-selector/`)

## Browse Alloys
- [All Alloys](https://alloyfyi.com/alloys/)
- [Alloy Families](https://alloyfyi.com/families/)
- [By Metal Base](https://alloyfyi.com/metals/)
- [Alloy Comparisons](https://alloyfyi.com/compare/)

## Interactive Tools
- [Material Selector](https://alloyfyi.com/tool/material-selector/)
- [Alloy Comparator](https://alloyfyi.com/tool/alloy-comparator/)
- [Weldability Checker](https://alloyfyi.com/tool/weldability-checker/)
- [Corrosion Resistance Finder](https://alloyfyi.com/tool/corrosion-resistance-finder/)
- [Hardness Converter](https://alloyfyi.com/tool/hardness-converter/)
- [Stress-Strain Calculator](https://alloyfyi.com/tool/stress-strain-calculator/)
- [Thermal Expansion Calculator](https://alloyfyi.com/tool/thermal-expansion-calculator/)
- [Beam Deflection Calculator](https://alloyfyi.com/tool/beam-deflection-calculator/)

## Learn
- [Industrial Applications](https://alloyfyi.com/applications/)
- [Metallurgy Glossary](https://alloyfyi.com/glossary/)
- [Guides](https://alloyfyi.com/guides/)

## Embed Widget
- [AlloyFYI Widget Docs](https://widget.alloyfyi.com)
- [alloyfyi-embed on npm](https://www.npmjs.com/package/alloyfyi-embed)
- [alloyfyi-embed on GitHub](https://github.com/fyipedia/alloyfyi-embed)

## REST API

Free REST API. No authentication required. JSON responses. CORS enabled.

| Method | Endpoint | Description |
|--------|----------|-------------|
| GET | `/api/v1/alloys/` | List alloys (DRF, paginated) |
| GET | `/api/v1/alloys/{slug}/` | Alloy detail |
| GET | `/api/v1/families/` | Alloy families (DRF, paginated) |
| GET | `/api/v1/applications/` | Applications (DRF, paginated) |
| GET | `/api/v1/glossary/` | Glossary terms (DRF, paginated) |
| GET | `/api/v1/guides/` | Guides (DRF, paginated) |
| GET | `/api/v1/tools/` | Interactive tools (DRF, paginated) |
| GET | `/api/v1/faqs/` | FAQs (DRF, paginated) |
| GET | `/api/v1/search/?q={query}` | Unified search (DRF) |
| GET | `/api/v1/stats/` | Site statistics |

```bash
curl -s "https://alloyfyi.com/api/v1/alloys/"
```

[API Docs](https://alloyfyi.com/developers/) · [OpenAPI Spec](https://alloyfyi.com/api/openapi.json)

## Developer Tools
- **PyPI**: `pip install alloyfyi` — [alloyfyi](https://pypi.org/project/alloyfyi/) — Alloy data, composition lookup, property comparison
- **Embed Widget**: [alloyfyi-embed](https://widget.alloyfyi.com)

## Science FYI Family

Part of [FYIPedia](https://fyipedia.com) developer tools ecosystem.
- [ChemFYI](https://chemfyi.com) — Periodic table, elements, compounds, reactions
- [GemFYI](https://gemfyi.com) — Gemstones, mineralogy, grading, origins
- [StarFYI](https://starfyi.com) — Stars, constellations, exoplanets, deep-sky objects
- [MineralFYI](https://mineralfyi.com) — 6,215 minerals, crystal systems, Mohs hardness

## Images (CDN)

OG images for all entities at https://cdn.alloyfyi.com/og/{type}/{slug}.png
- https://cdn.alloyfyi.com/og/homepage.png

## Full Index
- [Full content index](https://alloyfyi.com/llms-full.txt)
- [XML Sitemap](https://alloyfyi.com/sitemap.xml)