AISI 8630 is a nickel-chromium-molybdenum alloy steel (0.28–0.33% C, 0.55–0.75% Ni, 0.40–0.60% Cr, 0.15–0.25% Mo) used primarily in aerospace applications for landing gear, fasteners, and highly stressed structural components requiring high strength and fatigue resistance. The alloy provides yield strengths in the range of 180–280 ksi depending on heat treatment and section size, with good toughness and moderate hardenability suitable for medium-section forgings and bars.
Compliance & Regulations
5 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Tangent Modulus vs Stress(Etn(σ)) | Curve (13 pts) | Pa | 21°C · L | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain))4 entries | Curve (11 pts) | Pa | 21°C · L | ||
| ↳ | Curve (9 pts) | Pa | 260°C · L | ||
| ↳ | Curve (8 pts) | Pa | 454°C · L | ||
| ↳ | Curve (7 pts) | Pa | 538°C · L |