HexTow

IM7
Carbon Fiber
Product Data


HexTow

IM7 carbon fiber is a continuous, high performance, intermediate modulus, PAN based fiber available in
12,000 (12K) filament count tows. This fiber has been surface treated and can be sized to improve its interlaminar
shear properties, handling characteristics, and structural properties. It is suggested for use in weaving, prepregging,
filament winding, braiding, and pultrusion.
The unique properties of HexTow

IM7 fiber, such as higher tensile strength and modulus, as well as good shear
strength, allow structural designers to achieve both higher safety margins for both stiffness and strength critical
applications.
IM7-G 12k (0.25%) carbon fiber has been qualified to NMS 818 Carbon Fiber Specification (NCAMP). This allows
customers to call out an industry standard, aerospace grade carbon fiber without the need to write and maintain their
own specification.

Typical Fiber Properties U.S. Units SI Units
Tensile Strength
6K
12K

800 ksi
820 ksi

5,515 MPa
5,655 MPa
Tensile Modulus (Chord 6000-1000) 40.0 Msi 276 GPa
Ultimate Elongation at Failure
6k
12K

1.9%
1.9%

1.9%
1.9%
Density 0.0643 lb/in
3
1.78 g/cm
3

Weight/Length
6K
12K

12.5 x 10
-6
lb/in
25.0 x 10
-6
lb/in

0.223 g/m
0.446 g/m
Approximate Yield
6K
12K

6,674 ft/lb
3,337 ft/lb

4.48 m/g
2.24 m/g
Tow Cross-Sectional Area
6K
12K

1.94 x 10
-4
in
2

3.89 x 10
-4
in
2


0.13 mm
2

0.25 mm
2

Filament Diameter 0.203 mil 5.2 microns
Carbon Content 95.0% 95.0%
Twist Never Twisted Never Twisted

Typical HexPly 8552 Composite
Properties
U.S. Units SI Units Test Method
0 Tensile Strength 395 ksi 2,723 MPa
0 Tensile Modulus 23.8 Msi 164 GPa
0 Tensile Strain 1.6% 1.6%
ASTM D3039
0 Flexural Strength 270 ksi 1,862 MPa
0 Flexural Modulus 22.0 Msi 152 GPa
ASTM D790
0 Short Beam Shear Strength 18.5 ksi 128 MPa ASTM D2344
0 Compressive Strength 260 ksi 1,793 MPa
0 Compressive Modulus 21.2 Msi 146 GPa
ASTM Mod. D695
0 Open Hole Tensile Strength 62 ksi 427 MPa ASTM D5766
0 Open Hole Compressive Strength 48.8 ksi 336 MPa ASTM D6484
90 Tensile Strength 16.1 ksi 111 MPa ASTM D3039
Fiber Volume 60% 60%





HexTow

IM7
Product Data
Yarn/Tow Characteristics U.S. Units SI Units
Specific Heat 0.21 Btu/lb-F 0.21 cal/g-C
Electrical Resistivity 4.9 x 10
-5
ohm-ft 1.5 x 10
-3
ohm-cm
Coefficient of Thermal Expansion -0.36 ppm/F -0.64 ppm/C
Thermal Conductivity 3.12 Btu/hr-ft-F 5.40 W/m-K
Carbon Fiber Certification
This carbon fiber is manufactured to Hexcel aerospace grade specification HS-CP-5000. A copy of this specification
is available upon request. A Certification of Analysis will be provided with each shipment.
Available Sizing
Sizing compatible with various resin systems, based on application are available to improve handling characteristics
and structural properties. Please see additional information on available Sizes on our website or contact our technical
team for additional information.
Packaging
Standard packaging of HexTow

IM7 is as follows:
Nominal Weight Nominal Length Filament Count
(lb) (kg) (ft) (m)
6K 4.0 1.8 26,400 8,050
12K 4.0 1.8 13,350 4,070
Other package sizes may be available on request. The fiber is wound on a 3-inch ID by 11-inch long cardboard tube
and overwrapped with plastic film.
Safety Information
Obtain, read, and understand the Material Safety Data Sheet (MSDS) before use of this product.



















HexTow

IM7
Product Data



















Important
Hexcel Corporation believes, in good faith, that the technical data and other information provided herein is materially
accurate as of the date this document is prepared. Hexcel reserves the right to modify such information at any time.
The performance values in this data sheet are considered representative but do not and should not constitute
specification minima. The only obligations of Hexcel, including warranties, if any, will be set forth in a contract signed
by Hexcel or in Hexcel's then current standard Terms and Conditions of Sale as set forth on the back of Hexcel's
Order Acknowledgement.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and other demanding industries.
Our comprehensive product range includes:
! Carbon Fiber
! RTM Materials
! Honeycomb Cores
! Carbon, Glass, Aramid and Hybrid Prepregs
! Structural Film Adhesives
! Honeycomb Sandwich Panels
! Special Process Honeycombs
! Reinforced Fabrics

For US quotes, orders and product information call toll-free 1-866-556-2662 and 1-800-987-0658.
For other worldwide sales office telephone numbers and a full address list, please click here:
http://www.hexcel.com/contact/salesoffice


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