DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid vs. Vectorply® E-BXM 1708 Biaxial E-Glass
DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid (DuPont / Hexcel) and Vectorply® E-BXM 1708 Biaxial E-Glass (Vectorply Corp) achieve a 83.8% ASTM engineering compatibility score in E-Glass / E-CR Stitched Multiaxials (1708 / 1808) & Kevlar Hybrids. Tensile strength delta is -1622.6 MPa (-52.3%) and thermal HDT delta is matched, making them interchangeable with post-cure temperature and viscosity flow adjustments.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid (DuPont / Hexcel) | B: Vectorply® E-BXM 1708 Biaxial E-Glass (Vectorply Corp) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | DuPont / Hexcel • DUP-KEV49-285 | Vectorply Corp • VEC-1708-50IN-ROLL | Cross-Brand OEM Equivalent |
| ASTM D638 Tensile Strength (MPa / PSI) | 1480 MPa (214,656 psi) | 3102.6 MPa (450,000 psi) | -1622.6 MPa (-52.3 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | N/A | 232.2 °C (450 °F) | Ambient / N/A |
| ASTM D790 Flexural Strength (MPa) | 990 MPa | 4498.8 MPa | -3508.8 MPa (-78 %) |
| ASTM D2583 Barcol Hardness | N/A | N/A | N/A |
| ASTM D2196 Brookfield Viscosity @ 25°C | Solid Reinforcement / Core | 805 cPs | Solid State |
| Gel Time @ 25°C (Minutes) | N/A | 35 min | N/A |
| ASTM D792 Specific Density (kg/m³) | 2560 kg/m³ | 1120 kg/m³ | +1440 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Non-Regulated Industrial Fiber (N/A) | Non-Hazmat Standard Freight (N/A) | Identical (N/A) |
| Unit Price ($/kg USD) & Pack Price | $46/kg • $4,600 (100 kg Roll (50 in)) | $1.57/kg • $315 (65-Yd Roll (50 in Width)) | +44.43 $/kg (+2829.9 %) |
| US Stocking Warehouses | Phenix City, AL • Tampa, FL • Minneapolis, MN | FL • SC • ME • MN | 1–3 Days LTL Dispatch |
Companion process stack: Marine Vinyl Ester Resin (~0.68 kg/m² per ply in VIP) + Norox MEKP-925H Catalyst (1.5%). Follow RESIN DEMAND FORMULA: 1708 Biaxial (25.5 oz/yd² total) absorbs ~0.95 kg of Vinyl Ester resin per m² per ply in hand layup, or ~0.68 kg/m² per ply under vacuum infusion.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 0 °C (N/A °C vs. 232.2 °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 Non-Regulated Industrial Fiber (UN Number: N/A). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid vs. Vectorply® E-BXM 1708 Biaxial E-Glass
1. Is DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid a direct drop-in equivalent for Vectorply® E-BXM 1708 Biaxial E-Glass?▼
DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid (DuPont / Hexcel) and Vectorply® E-BXM 1708 Biaxial E-Glass (Vectorply Corp) achieve a 83.8% ASTM engineering compatibility score in E-Glass / E-CR Stitched Multiaxials (1708 / 1808) & Kevlar Hybrids. Tensile strength delta is -1622.6 MPa (-52.3%) and thermal HDT delta is matched, making them interchangeable with post-cure temperature and viscosity flow adjustments.
2. What is the ASTM D638 Tensile Strength and ASTM D648 HDT difference between DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid and Vectorply® E-BXM 1708 Biaxial E-Glass?▼
DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid (DuPont / Hexcel) delivers ASTM D638 Tensile Strength of 1480 MPa (214,656 psi) and ASTM D648 HDT of N/A °C, whereas Vectorply® E-BXM 1708 Biaxial E-Glass (Vectorply Corp) delivers 3102.6 MPa (450,000 psi) and HDT of 232.2 °C. The net delta is -1622.6 MPa (-52.3 %) tensile and N/A HDT.
3. Do DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid and Vectorply® E-BXM 1708 Biaxial E-Glass use the same catalyst or hardener cure system?▼
Companion process stack: Marine Vinyl Ester Resin (~0.68 kg/m² per ply in VIP) + Norox MEKP-925H Catalyst (1.5%). Follow RESIN DEMAND FORMULA: 1708 Biaxial (25.5 oz/yd² total) absorbs ~0.95 kg of Vinyl Ester resin per m² per ply in hand layup, or ~0.68 kg/m² per ply under vacuum infusion. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 0 °C (N/A °C vs. 232.2 °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 DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid and Vectorply® E-BXM 1708 Biaxial E-Glass?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Non-Regulated Industrial Fiber (UN Number: N/A). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid is priced at $4,600 per 100 kg Roll (50 in) ($46/kg) vs. $315 per 65-Yd Roll (50 in Width) ($1.57/kg) for Vectorply® E-BXM 1708 Biaxial E-Glass (delta: +44.43 USD/kg).
Related Drop-In Comparisons in E-Glass / E-CR Stitched Multiaxials (1708 / 1808) & Kevlar Hybrids
DuPont Kevlar 49 Style 285 4HS Crowfoot Ballistic Aramid (DuPont / Hexcel) and Vectorply® E-BXM 1708 Biaxial E-Glass (Vectorply Corp) 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).