OR 42D Aliphatic Color-Stable Polyurea TDS
Technical data sheet for OR 42D aliphatic color-stable polyurea — tested physical properties, application data and substrate preparation.
Technical data sheet for OR 42D, Oak Ridge's fast-set, 100% solids, aliphatic two-component spray polyurea with excellent colour retention. Three pages: product description, features and typical uses, full tested physical properties, and substrate preparation.
Tested physical properties
| Hardness | 50 ± 5 Shore D | ASTM D-2240 |
| Tensile strength | 3,300 ± 200 psi (22.7 ± 1.38 MPa) | ASTM D-412 |
| Elongation | 300 ± 50% | ASTM D-412 |
| Tear strength | 400 ± 50 pli (70.1 ± 8.77 kN/m) | ASTM D-412 |
| Taber abrasion | 33 mg loss max (CS17 wheel, 1,000 cycles, 1 kg) | ASTM D4060 |
| Water absorption | < 2.0% (24 hours at 74°F) | ASTM D471 |
| Pull-off adhesion | Concrete > 500 psi (substrate failure); steel > 900 psi | ASTM D4541 |
| Weathering | 2,000 hrs QUV — no cracking or blistering; gloss reduction and minor chalking noted | ASTM G-23 |
| VOC | 0 g/litre (100% solids) | ASTM D2369-81 |
Application data
- Mix ratio 1A : 1B by volume
- Pot life 10–20 seconds at 150–160°F, 50% RH
- Tack free 60–180 seconds; recoat window 0–6 hours
- Viscosity: Part A 120 ± 20 cps, Part B 40 ± 20 cps
- Density 8.5 lbs/gal combined; flash point > 200°F
- Recommended applied thickness > 2 mm; linear shrinkage 1–2%
- Return to service: foot traffic 2–4 hours, full service > 24 hours
- Service temperature: dry −40°F to 250°F; wet 40°F to 120°F
- Packaging: 10-gallon kit (5 gal Part A + 5 gal Part B) or 100-gallon kit
- Colours: clear/neutral, custom on request — colour packs go into Part B
Test conditions: properties measured on samples sprayed with a Graco EXP2 at 2,000 psi minimum through a Fusion AR4242 gun at 150–160°F. Different equipment and parameters will change these figures; values are approximate and users should carry out their own testing.
Substrate preparation: refer to SSPC-SP13 / NACE 6 or ICRI C03732 CSP 3–5. New concrete must cure 28 days before application; rinse to pH 8.0–11.0 and dry completely.