Every Surface.
Every Specification.
Every Audit.
FDA 21 CFR 175.300 powder coatings for stainless steel mixers, conveyor housings, and processing tanks — engineered to survive caustic washdowns, thermal cycling, and 20-hour production runs without flaking a single mil of film.
Built for plant engineers facing FSMA audits · QA directors before SQF assessments · Maintenance managers replacing failing epoxy
◈ Coating System Architecture · Substrate Cross-Section Analysis
FDA-Approved Topcoat
Thermoset Powder
1.0–1.5 mil
thickness
450°F / 20 min
cure / prep
Epoxy Primer
Adhesion Layer
0.5–1.0 mil
thickness
375°F / 15 min
cure / prep
Conversion Coating
Chromate-Free Pretreat
< 0.1 mil
thickness
Ambient / 5 min
cure / prep
Stainless Steel Substrate
304 / 316L Alloy
10–120 mil base
thickness
Sa 2.5 Blast
cure / prep
0+
Thermal Cycles Validated
per ASTM D3359
0 yr
Coating Service Life
properly applied
0 mg/in²
Max Extractives (CFR)
21 CFR 175.300 limit
0.9%
Audit Pass Rate
coating documentation
Is Your Facility Coating-Compliant?
Eight critical questions your SQF auditor, FSMA inspector, or third-party assessor will ask about your coating system. Click to mark verified — expand each item for specification evidence.
Compliance Score
0/8 VERIFIED
HIGH RISK
100% gap exposure
Click each item to mark as verified. Expand for specification evidence.
Is your current coating system 21 CFR 175.300 compliant for direct food contact?
Are your coating mil thicknesses documented and within ±1 mil of specification?
Is cure temperature and dwell time verified and recorded for each batch?
Has your coating been tested against your specific CIP chemicals (caustic, acid, chlorinated sanitizers)?
Does your applicator use a chromate-free conversion coating pretreatment on stainless steel?
Are coating maintenance records retained for minimum 2 years per FSMA requirements?
Has your coating been validated for thermal cycling between washdown (40°F) and production (250°F+) temperatures?
Is your coating BPA-free for infant formula or sensitive food applications?
Get the organized version of this checklist
PDF formatted for SQF and FSMA audit binders — with citation references
The Numbers Behind the Compliance
Every specification documented, every standard cited. This is what goes in your audit binder.
Mil Thickness
Topcoat (FDA)
±0.5 mil tolerance
Primer
Adhesion layer
Total DFT
Per ASTM D7091
Edge Coverage
Verified by gauge
Cure Schedule
Cure Temperature
Part metal temp
Dwell Time
Minimum PMT
Oven Uniformity
AMS 2750 survey
Cool-Down
Before handling
Chemical Resistance
2% NaOH (Caustic)
No blistering
1% Nitric Acid
No adhesion loss
200 ppm Chlorine
ASTM D1308
Animal/Veg Fats
Abrasion stable
Thermal Performance
Operating Range
Continuous service
Thermal Cycles
ASTM D3359
Adhesion Post-Cycle
Cross-hatch
Extractives (CFR)
21 CFR 175.300
◈ Equipment Coverage — Food & Beverage
Stainless Steel Mixers
All sizes — ribbon, paddle, planetary
Conveyor Housings
Belt, chain, screw conveyor systems
Processing Tanks
Jacketed, agitated, balance tanks
Filler Nozzles & Heads
Piston, gravity, pressure fillers
Pump Housings
Centrifugal, lobe, peristaltic
Drip Pans & Frames
Structural and secondary contact
What a Coating Failure Actually Costs
Three common coating-related audit scenarios — with real cost ranges and the CoatComply prevention for each.
⚠ Cumulative Audit Exposure — Unprotected Facility
$0+
Combined worst-case cost across three common coating-related audit scenarios
CoatComply Investment
Fraction of 1%
of audit exposure cost
Scenario: SQF Audit Finding — Coating Documentation Gap
Total Exposure
$29,700–$88,500
✓ CoatComply Prevention
CoatComply provides full documentation packages formatted for SQF audit binders — DFT reports, cure certificates, 21 CFR compliance letters.
Scenario: Coating Delamination on Filler Nozzle — Detected in QC
Total Exposure
$54,000–$164,000+
✓ CoatComply Prevention
CoatComply thermoset powder bonds permanently to stainless steel. Thermochemical fusion is irreversible — no delamination under normal CIP cycles.
Scenario: FSMA Inspection — Missing Coating Maintenance Records
Total Exposure
$20,500–$53,000+
✓ CoatComply Prevention
CoatComply digital documentation formatted to FSMA 21 CFR 117 — records retained and retrievable for 2+ years, ready for inspector review.
From Audit Finding to Audit-Ready
Plant engineers, QA directors, and maintenance managers across dairy, beverage, bakery, and meat processing facilities.
"Our SQF auditor asked for coating documentation on six pieces of equipment. CoatComply had the DFT reports, cure certificates, and 21 CFR compliance letters ready in a single binder. Zero findings on coatings."
Rebecca Hartmann
QA Director
Sunrise Dairy, Fresno CA
"We were replacing the epoxy on our filler nozzles every 8–10 months. After CoatComply's thermoset powder system, we're at 26 months and counting. No flaking, no shutdown cycles for coating failure."
Derek Osei
Maintenance Manager
BlueCrest Beverage, Atlanta GA
"The FSMA inspector wanted 2 years of coating maintenance records. We had them. That's the kind of thing that used to keep me up at night — CoatComply made it a non-issue."
Sandra Liu
Plant Engineer
Pacific Ridge Bottling, Portland OR
"Our SQF auditor asked for coating documentation on six pieces of equipment. CoatComply had the DFT reports, cure certificates, and 21 CFR compliance letters ready in a single binder. Zero findings on coatings."
Rebecca Hartmann
QA Director
Sunrise Dairy, Fresno CA
"We were replacing the epoxy on our filler nozzles every 8–10 months. After CoatComply's thermoset powder system, we're at 26 months and counting. No flaking, no shutdown cycles for coating failure."
Derek Osei
Maintenance Manager
BlueCrest Beverage, Atlanta GA
"The FSMA inspector wanted 2 years of coating maintenance records. We had them. That's the kind of thing that used to keep me up at night — CoatComply made it a non-issue."
Sandra Liu
Plant Engineer
Pacific Ridge Bottling, Portland OR
Download the FDA Coating
Compliance Checklist
The organized version of everything above — formatted as a PDF checklist for SQF and FSMA audit binders, with every standard cited and every spec documented.
What's Inside the Checklist
Already know you need a coating upgrade?
On-site or remote · No cost · Response within 1 business day
FDA 21 CFR 175.300
Compliant Formulations
FSMA Documentation
Audit-Ready Records
SQF Audit Support
Full Binder Packages