Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin vs. Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester
Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (Scott Bader North America) achieve a 97.4% ASTM engineering compatibility score in Isophthalic & DCPD Marine Polyester Resins. Tensile strength delta is +1 MPa (+1.4%) and thermal HDT delta is +2 °C, making them qualified for direct drop-in substitution under standard cure schedules.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) | B: Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (Scott Bader North America) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | Polynt Composites USA • POL-33750-ISO | Scott Bader North America • SCB-CRY489PA | Cross-Brand OEM Equivalent |
| ASTM D638 Tensile Strength (MPa / PSI) | 72 MPa (10,443 psi) | 71 MPa (10,298 psi) | +1 MPa (+1.4 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 92 °C (198 °F) | 90 °C (194 °F) | +2 °C (Direct Thermal Match) |
| ASTM D790 Flexural Strength (MPa) | 120 MPa | 119 MPa | +1 MPa (+0.8 %) |
| ASTM D2583 Barcol Hardness | 40 | 40 | 0 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 480 cPs | 450 cPs | +30 cPs (+6.7 %) |
| Gel Time @ 25°C (Minutes) | 24 min | 24 min | 0 min |
| ASTM D792 Specific Density (kg/m³) | 1115 kg/m³ | 1115 kg/m³ | 0 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Class 3 Flammable Liquid (UN1866) | Class 3 Flammable Liquid (UN1866) | Identical (UN1866) |
| Unit Price ($/kg USD) & Pack Price | $7.2/kg • $1,620 (225 kg Steel Drum) | $7.3/kg • $1,643 (225 kg Steel Drum) | -0.1 $/kg (-1.4 %) |
| US Stocking Warehouses | Lakeland, FL • Houston, TX • Minneapolis, MN | Lakeland, FL • Houston, TX • Minneapolis, MN | 1–3 Days LTL Dispatch |
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 2 °C (92 °C vs. 90 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin vs. Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester
1. Is Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin a direct drop-in equivalent for Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester?▼
Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (Scott Bader North America) achieve a 97.4% ASTM engineering compatibility score in Isophthalic & DCPD Marine Polyester Resins. Tensile strength delta is +1 MPa (+1.4%) and thermal HDT delta is +2 °C, making them qualified for direct drop-in substitution under standard cure schedules.
2. What is the ASTM D638 Tensile Strength and ASTM D648 HDT difference between Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester?▼
Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) delivers ASTM D638 Tensile Strength of 72 MPa (10,443 psi) and ASTM D648 HDT of 92 °C, whereas Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (Scott Bader North America) delivers 71 MPa (10,298 psi) and HDT of 90 °C. The net delta is +1 MPa (+1.4 %) tensile and +2 °C HDT.
3. Do Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester use the same catalyst or hardener cure system?▼
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 2 °C (92 °C vs. 90 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
4. How do US DOT 49 CFR Hazmat shipping rules and B2B drum/pack prices compare between Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin is priced at $1,620 per 225 kg Steel Drum ($7.2/kg) vs. $1,643 per 225 kg Steel Drum ($7.3/kg) for Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (delta: -0.1 USD/kg).
Related Drop-In Comparisons in Isophthalic & DCPD Marine Polyester Resins
Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) and Scott Bader Crystic 489PA Isophthalic Marine Hull Polyester (Scott Bader North America) are trademarks of their respective owners. CompositeMatrix Technologies Inc. is an independent North American B2B composite material intelligence registry; comparative ASTM D638, D648, D790, D2583, and D2196 figures are presented under the US legal doctrine of Nominative Fair Use (Lanham Act, 15 U.S.C. § 1125) and Feist Publications, Inc. v. Rural Telephone Service Co. (499 U.S. 340) for scientific and industrial cross-reference. Cure schedules, exotherm behavior, and laminate qualification must be verified by a licensed Naval Architect or Professional Engineer (PE) against current manufacturer batch Technical Data Sheets (TDS) and Safety Data Sheets (SDS).