Cost

Plating and Anodizing Cost per Part: How to Build a Quote That Holds

Break down the true cost drivers behind a plating or anodizing quote and learn where per-part estimates leak margin.

Finishing is priced by surface area, not by piece, and that single choice decides whether a quote holds. Most job shops carry a shop rate in dollars per square foot: decorative nickel-chrome runs 4 to 12 dollars per square foot, Type II anodize 2 to 5 dollars, Type III hard coat 6 to 18 dollars, electroless nickel 8 to 20 dollars because of the phosphorus and bath decomposition. Convert every part to area first with the Surface Area Calculator, then apply rate. Quoting by piece works only when parts are identical; the moment mix varies, per-piece pricing buries money in the small-area parts and overprices the large ones.

Direct metal and chemistry cost is smaller than buyers assume, usually 8 to 20 percent of the sell price. The real chemistry drain is drag-out, not deposition. Losing 2 gallons of 60 grams-per-liter nickel bath per load throws away 456 grams of salt that never plated a part, and at metal-salt prices that is real money multiplied across every rack. The Bath Chemistry Usage calculator plus the Plating Cost per Part calculator separate deposited metal from dragged-out waste so you charge for both. Hard chrome and electroless nickel skew high here because chrome efficiency near 15 percent wastes current and EN baths get dumped at 6 to 8 metal turnovers.

Tank time and rectifier energy set the floor on machine cost. A load occupies a tank for its full dwell whether it holds 4 parts or 40, so rack density is the biggest lever on cost per part. Hard coat at 45 to 60 minutes dwell costs far more tank time per part than a 20-minute bright dip. Energy adds up at high current density: 400 amps at 12 volts is 4.8 kW, so a one-hour hard-coat load at 0.12 dollars per kWh burns about 0.58 dollars just in rectifier power, before heating, chillers, and agitation. The Anodizing Cost per Part and Line Throughput calculators tie dwell and load size to a defensible per-part number.

Labor is where quotes quietly bleed, and racking plus masking dominate it. A part that takes 90 seconds to rack and unrack at a 35-dollar-per-hour loaded labor rate carries 0.88 dollars of handling before a single amp flows. Selective masking is worse: plugging threaded holes, applying lacquer, and stripping it after can run 2 to 6 minutes per part. The Masking Labor Cost calculator prices this explicitly, because estimators who fold masking into a vague overhead percentage lose the whole margin on high-mask parts. Always quote masking as a separate line item with its own piece time.

Wastewater and environmental cost is the line most shops under-recover. Treating rinse water for metals, cyanide destruction, chrome reduction, and pH neutralization runs 2 to 8 dollars per 1,000 gallons treated, plus sludge hauling as hazardous waste at 300 to 900 dollars per drum. High drag-out and single-stage rinsing multiply the treated volume; moving to three-stage counterflow can cut rinse volume by 90 percent and pull treatment cost down proportionally. Use the Rinse Water Usage and Wastewater Treatment Cost calculators to load this into the rate rather than absorbing it in overhead where it hides.

Scrap and rework must sit inside the quote, not outside it. First-pass yield of 95 to 99 percent is normal on stable parts, but each rejected load carries stripping labor, re-racking, re-plating chemistry, and doubled tank time. A part that fails thickness on a hard-coat load costs roughly 2x its plating cost to recover because strip-and-redo consumes a second full cycle. Build a yield loss factor into the rate: dividing the base rate by 0.96 covers a 4 percent reject stream. Quoting at theoretical yield and eating rework off the back end is the classic path to a money-losing program.

Overhead and burden turn a cost into a price. Tank heating, chillers, filtration, ventilation and scrubbers, permits, lab titrations, and rack maintenance are real recurring costs that a shop-rate must absorb, typically adding 40 to 90 percent on top of direct cost. Rack amortization alone matters: custom racks cost 200 to 2,000 dollars and plate up over time, so their contact tips need periodic stripping and re-tipping. Set a minimum lot charge, commonly 75 to 250 dollars, so a 20-part order does not get quoted below the cost of setting up the line and titrating the bath for it.

Where estimates go wrong is almost always area and load assumptions. Estimators pull area from a nominal print instead of true wetted area, forget that internal bores and threads add surface, and assume full racks when the customer ships in small lots that half-load the tank. A half-full rack doubles tank-time cost per part instantly. Rebuild the quote from measured area, real rack density from the Rack Utilization calculator, logged drag-out, and actual masking time, then compare it to your historical dollars-per-square-foot. If the two disagree by more than 15 percent, one of the inputs is wrong before you send the number.

Published 2026-07-01.