DENSITY
1 kg/m³
TENSILE STRENGTH
3,600 MPa
MAX SERVICE TEMP
250°C
Kevlar 49 is a aramid fiber used in aerospace applications. Tensile strength: 3,600 MPa.
ABOUT KEVLAR 49
Kevlar 49 is a high-modulus para-aramid fiber developed by DuPont, offering exceptional tensile strength-to-weight ratio and impact resistance. It is widely used in aerospace for pressure vessel overwraps, ballistic protection, and composite reinforcement. Its vibration damping properties also make it useful in satellite structures.
CHEMICAL COMPOSITION
Poly-paraphenylene terephthalamide (PPTA)
ROCKET & SPACECRAFT APPLICATIONS
●COPV pressure vessel overwrap
●Meteoroid/debris shielding
●Parachute reinforcement
●Satellite structural panels
●Rocket motor casings
MANUFACTURING PROPERTIES
CORROSION RESISTANCE
Excellent
WELDABILITY
N/A
MACHINABILITY
Specialized
COST RATING
High
MECHANICAL PROPERTIES
| DENSITY | 1 kg/m³ |
| TENSILE STRENGTH | 3,600 MPa |
| STRENGTH-TO-WEIGHT | 2500000 kN·m/kg |
THERMAL PROPERTIES
| MAX SERVICE TEMPERATURE | 250 °C |
| THERMAL CONDUCTIVITY | 0.04 W/m·K |
| THERMAL EXPANSION | -2.0 µm/m·K |
COMPLETE SPECIFICATIONS
| CATEGORY | Aramid Fiber |
| DESIGNATIONS | Kevlar 49, Kevlar 149 |
| MANUFACTURER | DuPont / Teijin Aramid |
| DENSITY | 1 kg/m³ |
| TENSILE STRENGTH | 3,600 MPa |
| MAX SERVICE TEMP | 250 °C |
| THERMAL CONDUCTIVITY | 0.04 W/m·K |
| THERMAL EXPANSION | -2.0 µm/m·K |
| CORROSION RESISTANCE | Excellent |
| WELDABILITY | N/A |
| MACHINABILITY | Specialized |
| COST RATING | High |
🛸 RELATED SPACECRAFT SYSTEMS
