# Steel (AISI)

**Status:** Placeholder — needs full material card details

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## Properties

| Property | Value | Units | Source |
|----------|-------|-------|--------|
| Standard | AISI | — | Intake |
| Grade | ❓ TBD | — | Need from NX model |
| Yield strength | ❓ TBD | MPa | — |
| E (Young's modulus) | ❓ TBD | GPa | — |
| Density | ❓ TBD | kg/m³ | — |
| Poisson's ratio | ❓ TBD | — | — |

## Notes

- Stress allowable of 130 MPa was given as constraint — need to confirm basis (Gap G9)
- If yield is ~250 MPa, then 130 MPa implies SF ≈ 1.9 — conservative
- Material card should be extracted from NX model during introspection

## History

- **Gen 001** (2026-02-09): Placeholder from intake — "Steel (AISI)" is all we have