In one line for buyers
A titanium mesh anode is not just “sheet area − open area”. After expansion, the mesh ribs are slanted, so the real coating area is larger than the flat projection. If you price or set process by flat area only, your quote will be wrong, and the chain g/㎡ → current density → thickness → lifetime will drift.
We use a coefficient method that includes slanted ribs, open area, and rib geometry—so price, g/㎡, and process stay aligned. This fits MMO titanium anodes (Ru–Ir/Ta) and platinum coated titanium mesh for chlorination, seawater treatment, cathodic protection, PCB/electrolysis, etc.

1) Why flat (projected) area is not enough

• Slanted ribs aren’t counted: Expanded mesh ribs are angled; real surface > flat surface.

• Open area “looks similar” but isn’t: With the same open rate, different hole shapes / rib thickness / stretch angle give very different real areas.

• Process drifts: If area is wrong, your g/㎡, current/voltage/time, and finally thickness & lifetime will be off.

Bottom line: mesh must use Projected Area × Coefficients, or your pricing and process won’t match reality.

2) Our coefficient method (how we calculate)

Working formula (easy to share internally)
Effective coated area ≈ Projected area × K1 (hole shape & open rate) × K2 (rib geometry) × K3 (tilt/stretch correction)

• Where do K’s come from? From repeated measurement + weighing + local cross-sections, then checked against AST (accelerated lifetime) results.

• After samples are approved, the same mesh family can reuse the same coefficient set.

We write these K’s into the 3D area table. That becomes the only reference for quoting and for g/㎡ calculation—no misunderstandings.

3) How quoting and process stay in sync (at a glance)

4) Buyer questions we solve (price, lifetime, lead time)

a) Will the price match real manufacturing?

• We don’t use a flat “sheet area”. We use area × coefficients, so precious metal usage tracks real surface. No hidden overpay.

• On repeat orders, we keep the same coefficient set, so pricing is verifiable and consistent.

b) Will thickness & lifetime be stable?

• g/㎡ and I/V/t are set from the real area, so thickness distribution is tighter.

• Under the same AST window, results are more repeatable and batch variation drops.

c) Will lead time be predictable?

• We lock the cycle: wet-film limit per pass, 100–200 °C dry, ≥ 400 °C soak 10–15 min, forced cool to room temp, repeat.

• For weak spots (tips/edges/junctions) we define weighted coats / drain aids early → fewer reworks, more stable timing.

5) A quick example (kept short)

A platinum coated titanium mesh priced by “sheet area − holes” looked expensive. After applying our coefficient method, the effective area dropped to the real level, pricing and g/㎡ were corrected, and AST consistency improved. After the first approval, the same coefficients were reused for batch orders—lower cost swings, smoother communication.

6) Process window (so production and QC speak the same language)

• Wet-film per pass: Slightly lower than plate parts for mesh (e.g., 0.8×) to avoid runs/orange peel.

• Dry/soak/cool: 100–200 °C dry to constant mass; ≥ 400 °C soak 10–15 min; forced cool to room temp before the next pass.

• Weighted coats / drain aids: Add where needed (tips, edges, intersections).

• QC alignment: Pinhole/spark thresholds by zone; cross-sections/weigh stats tied to the coefficient version; white-cloth photos archived by zone name.

7) One-page acceptance checklist 

• Does the quote include a 3D area table + K1/K2/K3?

• Are g/㎡, current density, and time derived from that same area basis?

• Do sample reports show weighing/cross-section/AST tied to the same coefficient version?

• For mass builds, are REV / fixture / furnace / coefficient version frozen and traceable?

Summary (your practical benefits)
Using the coefficient method to include slanted ribs and open-mesh geometry brings quotes, g/㎡, and process onto the same, real surface. You get:

• More accurate pricing (no overpay, no after-the-fact adjustments)

• More stable lifetime (repeatable AST, tighter batch spread)

• More reliable lead times (fewer reworks, clear takt)

This is why, when sourcing MMO titanium mesh anodes / platinum coated titanium mesh / expanded metal titanium anodes, it pays to choose a supplier who can CAD it, machine it, and set the coating process—all in one.