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Grade: DuPont™ Kevlar® 49
Formula: Polyparaphenylene terephthalamide
Form: Fiber
Material: Polyaramid
Commodity: Polymers
Filament Diameter:
0.012mm
Number Of Filaments:
5000
Tex Number:
790
DuPont™ Kevlar® 49 Polyaramid Fiber is a strong, lightweight fiber from Goodfellow's extensive range of polyaramid products. With high tensile strength and modulus, as well as excellent thermal, chemical, and radiation resistance, Kevlar® 49 is widely used in ballistic protection applications. Other uses include reinforcing plastics, ropes and cables, sailcloth, and automotive components. As one of the strongest man-made fibers, Kevlar® brings unique properties to Goodfellow's diverse fiber catalogue.
Tolerances
Fiber
| Filament Diameter | ±25% | |
|---|---|---|
| Number Of Yarns | ±10% | |
| Number Of Filaments | ±10% | |
| Tex Number | ±10% | |
| Length | +5% / -1% |
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Fair |
| Alcohols | Good |
| Alkalis | Good-Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Halogens | Good |
| Ketones | Good |
Physical Properties
| Element | Value |
|---|---|
| Resistance to Ultra-violet | Fair |
| Water absorption( % ) | 3.5 |
| Water absorption - equilibrium( % ) | 3.5 |
| Density( gcm⁻³ ) | 1.44 |
Thermal Properties
| Element | Value |
|---|---|
| Lower working temperature( C ) | -200 |
| Upper working temperature( C ) | 180-245 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1400 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.04@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | -2Along Axis |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 59-124 |
| Tensile strength( MPa ) | 2760 |