MAF Honeycomb Screen: What Pros Really Look For

If you’re speccing a maf honeycomb screen for wind tunnel straightening or a test-cell intake, this Stainless Steel Hengshi Honeycomb Core is, frankly, the reference point many labs compare against. It’s built for wind tunnels, but the airflow discipline transfers perfectly to MAF housings, dyno rooms, even UAV intakes. Origin matters too: produced in No.2, Tongda Street, High-tech area Gu'an County, Langfang, 065500, Hebei, China.

Industry trend check

Labs and OEMs are pushing for tighter flow uniformity with lower turbulence intensity (TI) while keeping pressure drop civilized. Stainless cores are back in fashion—thanks to heat tolerance, rigidity, and easy cleaning—after a decade of lightweight aluminum dominance. In EV and aeroacoustics testing, consistency beats grams, to be honest.

How it’s built (short version)

Materials: 304/316L stainless foil; optional 310S for high-temp benches. Methods: precision slitting → sinusoidal corrugation → stacking/expansion → resistance spot welding or vacuum brazing → flattening and edge treatment. Testing: flatness and cell uniformity, then mechanical checks per ASTM C365 (compression) and ASTM C273 (shear). Typical service life: around 8–12 years in wind tunnels with periodic ultrasonic cleaning; longer in MAF housings if filtered upstream.

Representative specs

In-house flow data (300 mm dia., L/D 6:1) showed TI reduction from ≈2.5% to

Where it’s used

• Subsonic wind tunnels (aero/thermal, aeroacoustics)
• Engine dyno and chassis dyno intake straightening
• Automotive MAF housings using cut-to-size disks (yes, a maf honeycomb screen)
• HVAC labs, environmental chambers, UAV propulsion test rigs

Vendor snapshot (what to compare)

Customization and a quick case

Cut circles, frames, and pre-curved sections are routine. Edges can be hemmed to reduce whistle. One wind tunnel client swapped to a stainless maf honeycomb screen with L/D 6:1 and saw TI stabilize below 0.7% across the 0.9 m test section; cleaning intervals doubled after switching to 316L due to humidity resistance. Surprisingly simple win.

Certs and compliance

Manufactured under ISO 9001. Mechanical testing to ASTM C365/C273. RoHS-friendly materials on request. For aerospace tunnels, traceability packages are available; AS9100 alignment can be discussed.

References

1. ASTM C365/C365M – Standard Test Method for Flatwise Compressive Properties of Sandwich Cores.
2. ASTM C273/C273M – Standard Test Method for Shear Properties of Sandwich Core Materials.
3. ISO 9001:2015 – Quality management systems — Requirements.
4. NASA Glenn Research Center: Wind Tunnels Overview, https://www1.grc.nasa.gov/facilities/windtunnels/