SEMITI 826D
Heavy-duty rutile for outdoor industrial and coil coatings — 10+ year gloss retention.
SEMITI 826D is a heavy-duty chloride-process rutile engineered for industrial and coil coatings that must perform outdoors for 10+ years without visible chalking, gloss loss, or color shift. It is the direct counterpart to Tronox CR-826, the global reference grade for high-durability outdoor coatings.
The proprietary heavy alumina + silica + organic surface treatment creates a thick, dense inorganic shell around each TiO2 particle. This shell does three things: (1) physically blocks UV-generated reactive oxygen species from migrating to the polymer binder, dramatically reducing chalking; (2) provides exceptional binder compatibility across polyester, PVDF, and fluoropolymer coil coating systems; (3) maintains tight color specification over the life of the coating.
SEMITI 826D is the workhorse grade for residential and architectural cladding coil-coated steel, where 15–20 year warranty paint finishes are standard. It is also widely used in heavy-duty industrial protective coatings for offshore platforms, bridges, and infrastructure.
Why customers pick SEMITI 826D
- 01Industry-leading chalking resistance — < grade 2 chalk per ASTM D4214 after 10 years Florida exposure
- 02Compatible with polyester, PVDF, fluoropolymer coil coating systems
- 03Color stability ΔE < 1 over 5000 hr QUV-A — supports 15-year warranty cladding
- 04High zirconia/silica overcoat protects binder from photocatalysis
Typical specifications
Batch-specific CoA accompanies every shipment.
| TiO2 content | ≥ 90.0% | |
| Rutile content | ≥ 98.5% | |
| Color (CIE L*) | ≥ 97.5 | |
| Color (b*) | ≤ 1.5 | |
| Oil absorption | 12–16 g/100g | |
| Surface treatment | Heavy Al2O3 + SiO2 + organic | |
| QUV gloss retention (5000 hr) | ≥ 70% | |
| Florida exposure chalking (5 yr) | < grade 2 (ASTM D4214) |
Typical dosage
Starting points for formulator trials — final loadings should be optimized in-house.
vs international reference grades
Comparisons against the international grades most commonly cross-referenced by formulators.
Direct equivalent. SEMITI 826D matches CR-826 within 2% on QUV gloss retention after 5000 hr in standard PVDF coil coating. Landed cost 35–45% lower in Asia.
R-960 is positioned more for plastics; for coil/industrial coatings SEMITI 826D is a better fit.
Both are durable-grade rutiles. SEMITI 826D has slightly higher silica content and slightly better chalking resistance in long-term Florida exposure.
Packaging & shipping
25 kg paper bag with PE liner; 500 / 1000 / 1250 kg FIBC. Standard pallet 1 t. 20' container 18–20 t. No special handling required for ocean transport.
Common questions
What's the difference between SEMITI 826D and SEMITI 706?+
Can I use 826D in interior architectural paint?+
Is 826D approved for PVDF coil coating?+
Request CoA, sample, or quote for SEMITI 826D
We typically respond within 24 hours UTC+8. Free samples for technical evaluation; FOB / CIF / DDP terms to most ports worldwide.