In aerospace manufacturing, every micron matters. Whether you are prepping a turbine blade for NDT (Non-Destructive Testing) or peening a landing gear assembly, the abrasive you choose must meet rigorous global standards like SAE AMS2431.
1. The Critical Distinction: Cleaning vs. Peening
While both use glass beads, their metallurgical goals are different:
- Aerospace Cleaning: Removes heat scale and oxidation from engine components without changing the part’s dimensions. This is vital for maintaining the aerodynamic profiles of compressor blades.
- Glass Bead Peening: According to AMS-S-13165, this process uses the kinetic energy of spherical beads to create a layer of compressive residual stress. This layer acts as a shield, stopping microscopic cracks from growing into structural fractures.
2. Aerospace Grade & Compliance Chart (2026 Specs)
To pass a Tier-1 audit, your media must match specific aerospace material standards.
| Component Type | Material | Recommended Grade | Compliance Standard |
| Turbine Blades | Nickel Superalloys | AH Grade (GB-13) | AMS 2431/6 |
| Landing Gear | High-Strength Steel | AB / AC Grade | MIL-S-13165C |
| Airframe Spars | 7075 Aluminum | AD Grade | SAE J442 |
| Fasteners/Small Parts | Titanium / Stainless | Fine (170-325 mesh) | ASTM B253 |
3. Top 3 Aerospace Applications for 2026
A. Non-Destructive Testing (NDT) Prep
Before a technician can look for cracks using dye penetrants, the surface must be perfectly clean. Glass beads remove carbon deposits and “smear” from machining without masking the very cracks the NDT is trying to find.
B. Prevention of Stress Corrosion Cracking (SCC)
Titanium and aluminum parts are highly susceptible to SCC. Research in the Journal of Aeronautical Fatigue shows that glass bead peening can improve fatigue strength by up to 13-15% in welded joints, a massive safety margin in aviation.
C. Contamination Control
A common failure in aerospace is Ferrous Contamination. If you use a bead that has touched carbon steel on an aluminum wing-spar, you trigger galvanic corrosion. Coreblast Solutions ensures “Virgin-Grade” glass beads for our aerospace clients to prevent this risk entirely.
About the Author
Lead Aerospace Surface Consultant, Coreblast Solutions
Specializing in MRO supply chain optimization and surface integrity, our author has 15+ years of experience helping Indian aerospace manufacturers achieve AS9100 compliance. Based in Delhi, Coreblast Solutions provides technical-grade abrasives that meet the stringent safety requirements of both domestic and international aviation authorities.
What is the current standard for aerospace glass beads?
The primary standard is SAE AMS2431. It has superseded the old MIL-G-9954A and covers the strict requirements for bead roundness, hardness, and chemical composition.
Can glass beads be used on titanium jet engine parts?
Yes, but with caution. For titanium, a “Wet Blasting” process is often preferred to eliminate the risk of dust explosions and to provide a finer, more consistent finish required for high-bypass turbofans.
How do you verify peening intensity in aerospace?
We use Almen Strips. These are small metal strips placed in the blast stream; the amount they “curve” tells us exactly how much compressive stress is being applied to the flight hardware.
