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Broad Base. Best Solutions.
CARBON FIBERS and COMPOSITE MATERIALS
SIGRAPREG®
Prepregs
Made from
Carbon, Glass,
and Aramid
Fibers
2
Carbon fibers and composites –
made by SGL Group.
Q Comprehensive product range
Q Integrated value chain
Q Only European carbon fiber manufacturer
Q Consistently high quality
Q Many different processing technologies
Q Innovative tailored solutions
Q High security of supply
Q Close-to-customer sales and
distribution network
Q Global presence
BUSINESS UNIT CARBON FIBERS and COMPOSITE MATERIALS
3
Unique integrated
value chain
SGL Group covers the complete value chain of carbon fiber products:
from precursor, via carbon fibers, fabrics, and prepregs to the finished
CFRP components. Our carbon fibers produced by SGL Group in Europe
and North America form the basis for all processing steps in fiberreinforced composite applications.
Carbon fiber-reinforced plastics are high-perfor-
With many different processing technologies
mance materials with unique properties. They are
and comprehensive production, material, and
used where other materials have reached their
application know-how, we can offer our customers
limits and are indispensable in many industries
tailormade solutions for their requirements –
today, e.g. for lightweight components with ultra-
for example in automotive production, the wind
high strength and stiffness.
energy sector, and numerous other industrial
applications.
SGL Group is the only European manufacturer to
material we produce ourselves via all intermediate
SIGRAPREG prepregs made from carbon, glass,
and aramid fibers
steps to the finished end products. In this way, we

can guarantee the highest product quality and
SIGRAPREG woven, unidirectional, and multiaxial
security of supply.
fabric prepregs are state-of-the-art reinforcing
cover the entire carbon fiber value chain: from raw
materials. They are used in numerous industries,
including automotive manufacturing, aerospace
construction, the wind energy sector, mechanical
engineering, medical technology, marine construction, sports equipment production, and antiballistic
protection.
b Prepreg production
Video: From fiber to finished component
sglgroup
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Prepreg – a material with
impressive all-round properties
Q Excellent mechanical properties
Q Low density
Q Low thermal expansion
Q Good electrical conductivity
QNon-corrosive
Q Own resin formulation for individual
resin systems
Q Precise laminate thickness tolerances
Prepreg
5
SIGRAPREG® pre-impregnated materials
made from carbon, glass, and aramid fibers
SIGRAPREG is the brand name for textile reinforcing materials
Automotive industry: Our prepregs are used in composites
made from high-quality carbon, glass, and aramid fibers
for applications such as lightweight car body and structural
impregnated with different resin systems.
components. For electric cars, entire passenger cells are
produced from CFRP.
The unidirectional, multiaxial, and woven fabric prepregs we
supply are application-optimized high-performance materials.
Wind energy: In wind farms, prepreg-reinforced plastics are
Our prepregs are fatigue- and corrosion-resistant and have
used for the rotor blades of wind turbines.
excellent mechanical properties that make it possible to
produce stiff, strong yet ultra-lightweight fiber-reinforced
Aerospace: Prepreg-reinforced plastics are used for aircraft
composites. We can tailor the prepregs perfectly to your
components such as fuselage and wing structures, floor beams,
requirements, since we formulate our own state-of-the-art
and floor panels, and in space engineering for engine cowlings.
resin systems and are equipped with many different
production and processing options for reinforcing materials.
Sports industry: In the sports sector, carbon fiber prepregreinforced composites are used as a high-performance material
SIGRAPREG covers the whole range of carbon, glass, and
for racing bike frames, racing car monocoques or golf clubs,
aramid fiber materials. So we can offer a comprehensive
fishing rods, and archery bows.
portfolio capable of meeting the most diverse challenges.
Mechanical engineering: Prepregs impart high strength and
Typical applications include:
stiffness and good damping properties to components subject
to extreme dynamic stresses. Typical applications include
gripper bars or lifting beams and transfer bars for automation
technology.
Antiballistic protection: Pre-impregnated hybrid and aramid
b SIGRAPREG
fabrics are used particularly for safety helmets and vehicle
unidirectional carbon fabric
armor.
Manufacturing process
Fiber / woven fabric / multiaxial fabric feed
Carrier paper feed
Resin application
Release paper
feed
Impregnation
Winding
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The best resin system
for each application
The prepregs made by SGL Group are the result of advanced
product development. We combine high-quality resin systems
formulated in-house with state-of-the-art reinforcing materials.
Our range includes a wide variety of resin systems with
different glass transition points (Tg), curing temperatures,
viscosity, tack, and storage stability. This enables us to supply
materials with maximum performance and minimum weight
that are optimally tailored to your specific application.
c Resin application for impregnation
Nomenclature key
SIGRAPREG C W95-PL1/1-E331/48%
1
1 Brand name
SIGRAPREG
2
3
2 Material
C = carbon
G = glass
A = aramid
H = hybrid
4
5
6
7
3 Type
W = woven fabric
U = unidirectional
B = biaxial
T = triaxial
Q = quadriaxial
4 Areal
weight
in g/m2
5 Weave / fiber orientation / fixation
woven
multiaxial
PL 1/1 = plain
0 = 0°
TW 2/2 = twill 2/2
090 = 0°/90°
TW 4/4 = twill 4/4
45 = -45°/+45°
045 = 0°/-45°/+45°
04590 = 0°/-45°/ 90°/+45°
7 Resin content
in %
6 Resin type
Exxx = epoxy
Pxxx = phenolic
NF = no fixation
SO = single-sided scrim
SD = double-sided scrim
ST = stitched
Individual resin systems for different requirements
Resin system
Type
Tg
[°C]
Curing
temperature
[°C]
Shelf life at
RT (20 °C)
days
Shelf life at
RT (–18 °C)
months
Tack
Impact
modification
E500 | E501 | E502 | E503
epoxy
110
80 – 160
70
12
M
yes
E300 | E301
epoxy
120
70 – 120
21
4
L/M/H
yes
E400 | E402
epoxy
120
80 – 140
40
12
L
no
E310 | E311
epoxy
120
80 – 160
14
6
L/M/H
yes
E320 | E321 | E322 | E323
epoxy
120
90 – 140
90
12
M
yes
E700
epoxy
120
140 – 160
14
12
M
yes
E302
epoxy
130
70 – 140
14
12
L/M/H
no
E340
epoxy
140
100 – 150
90
12
L/M
no
E330
epoxy
145
80 – 160
28
12
L/M/H
yes
E800
epoxy
220
80 – 200
14
12
L/M/H
no
P320 | P321 | P322
phenolic
> 200
100 – 180
180
12
M/H
no
P310
phenolic
–
120 – 160
7
6
L/M/H
–
P500
phenolic
–
150 – 170
28
12
L/M/H
–
Other resin systems available on request. L = Low, M = Medium, H = High
Prepreg
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Prepregs based on
woven structures
We produce the woven fabrics for our SIGRAPREG prepregs
in our own weaving facility. We use 1k, 3k, 6k, 12k or 24k
carbon fiber tow as the material basis. In hybrid woven
fabrics, we also process glass and aramid fibers.
c SIGRAPREG carbon woven fabric prepreg
Material data of our SIGRAPREG® woven fabric prepregs
Material type
C W95-PL1/1-E331/48%
C W165-PL1/1-E323/48%
Weave
Areal weight (dry)
[g/m2]
Width
[cm]
Resin type
Resin content
[%]
plain
95
120
epoxy
48
plain
165
120
epoxy
48
C W200-TW2/2-E311/48%
twill 2/2
200
120
epoxy
48
C W200-TW2/2-E501/48%
48
twill 2/2
200
120
epoxy
C W200-PL1/1-E323/42%
plain
200
120
epoxy
42
C W200-PL1/1-E331/42%
plain
200
120
epoxy
42
C W200-TW2/2-E323/45%
twill 2/2
200
120
epoxy
45
C W205-TW2/2-E321/43%
twill 2/2
205
120
epoxy
43
C W245-TW2/2-E503/44%
twill 2/2
245
100
epoxy
44
C W245-TW2/2-E323/45%
twill 2/2
245
120
epoxy
45
C W285-TW2/2-E323/42%
twill 4/4
285
120
epoxy
42
C W305-TW2/2-E323/42%
twill 2/2
305
120
epoxy
42
C W305-PL1/1-E331/42%
plain
305
120
epoxy
42
C W310-PL1/1-E302/40%
plain
310
120
epoxy
40
C W345-TW2/2-E300/38%
twill 2/2
345
120
epoxy
38
C W665-TW2/2-E323/42%
twill 2/2
665
120
epoxy
42
Other types available on request.
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Prepregs based on unidirectional and
multiaxial fabrics
Our SIGRAPREG unidirectional and multiaxial fabric
prepregs can be produced on the basis of our own fabric
structures as well as by direct processing of the reinforcing
fibers. In this way, we cover the whole range from very
lightweight to heavier constructions.
c SIGRAPREG multiaxial carbon fabric prepreg
Material data of our SIGRAPREG® unidirectional and multiaxial fabric prepregs
Material type
Construction
Areal weight (dry)
[g/m2]
Width
[cm]
Resin type
Resin content
[%]
C U200-0/NF-E310/30%
unidirectional
200
C U230-0/NF-E322/39%
unidirectional
230
63.5
epoxy
30
60
epoxy
C U255-0/NF-E322/37%
unidirectional
39
255
60
epoxy
37
C U285-0/NF-P321/42%
C U310-0/NF-E340/35%
unidirectional
285
110
phenolic
42
unidirectional
310
30
epoxy
35
Unidirectional
Unidirectional (fixed)
C U80-0/SO-E703/38%
unidirectional
80
30
epoxy
38
C U100-0/SO-E703/38%
unidirectional
100
30
epoxy
38
C U150-0/SO-E340/38%
unidirectional
150
30
epoxy
38
C U450-0/SD-E501/36%
unidirectional
450
63.5
epoxy
36
C U600-0/SD-E501/33%
unidirectional
600
125
epoxy
33
biaxial
160
60
epoxy
45
Multiaxial
C B160-45/SO-E501/45%
C B450-45/SO-E501/38%
biaxial
450
73.5
epoxy
38
C B300-45/ST-E320/40%
biaxial
300
126
epoxy
40
C B410-45/ST-E320/40%
biaxial
410
126
epoxy
40
C B610-45/ST-E320/40%
biaxial
610
126
epoxy
40
Other types available on request.
Prepreg
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TowPregs based on fiber tows
The TowPregs made by SGL Group are pre-impregnated
carbon, glass, and aramid fiber bundles. Their resin content
ranges from 26 to 40 %. The fibers, resin, tack, and TowPreg
width can be varied to suit individual customer requirements
and produced with very high consistency. We can develop
application-optimized material perfectly tailored to our
customers’ processes.
Our TowPregs neither need any carrier paper nor foil. This
saves our customers time and money, while also offering
benefits in terms of environmental protection and health &
safety.
Liquid resin and solvents are no longer required in the
production process. This has advantages for EHS management.
In addition:
• Equipment such as resin baths, mixers, and filling stations
is no longer necessary, which cuts capital costs.
• Resources are conserved and costs saved in material use
because unusable resin residues are no longer generated.
• The amount of plant cleaning is reduced, which makes
processes simpler and more efficient.
c SIGRAPREG TowPreg
• Winding processes are speeded up, so plant productivity
increases.
• Stabile storage at room temperature
With TowPregs from SGL Group, better results for
Typical applications include:
challenging processes can be achieved.
• Pressurized containers
Our TowPregs not only give components very good mechanical
• Automotive components
properties. They also have excellent winding behavior that
• Leaf springs
permits far more uniform placement to the highest accuracy,
• Marine masts
provides constant width and therefore excellent processing
• Sports articles
behaviour.
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A comprehensive range
of application-optimized,
high-performance solutions.
To develop new ideas, you need partners
who can contribute added knowledge and
think outside the box. As the only European
carbon fiber manufacturer, we offer more
than just our comprehensive product
portfolio.
With our many different processing
technologies, we supply solutions perfectly
matched to your requirements, application,
and technical conditions: precisely tailored
high-performance materials for the development and production of competitive
lightweight design innovations.
SGL Group – the Carbon Company
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SGL Group –
The Carbon Company.
A leading global
manufacturer of
carbon-based products.
Q Unique product portfolio
Q Innovative technologies and solutions
Q Production sites close to sales markets
Q Technology & Innovation Center in Germany
with international networks
b Resin application for
impregnation of the fibers
We have wide-ranging expertise in raw materials,
We use this broad base to offer our customers the
advanced manufacturing processes, and long-
best solutions possible. That’s how we live up to our
standing application and engineering know-how.
claim: Broad Base. Best Solutions. This claim is also
We have a comprehensive portfolio of carbon,
upheld by our corporate SGL Excellence philosophy
graphite, and carbon fiber products and our
of continuous improvement.
carbon fiber to composites. With a global sales and

distribution network and modern production sites
More information can be found by visiting:
in Europe, North America, and Asia, we are close to
www.sglgroup.com
integrated value chain covers everything from
our customers throughout the world.
C sglgroup
sglgroup
Contact
europe
[email protected]
Phone +49 8271 83-2160
Fax +49 8271 83-1427
ameriCaS
[email protected]
Phone +1 714-698-8103
Fax +1 714-698-8104
Free phone 1-877-CFIBERS
asia/paCifiC
[email protected]
Phone +86 21 5211-0333
Fax +86 21 5211-0085
® registered trademarks of SGL CARBON SE
02 2015/1 E Printed in Germany
This information is based on our present state of knowledge and is intended to provide general notes on our
products and their uses. It should therefore not be construed as guaranteeing specific properties of the products described or their suitability for a perticular application. Any existing industrial property rights must be
observed. The quality of our products is guaranteed under our “General Conditions of Sale”.
Carbon Fibers & Composite Materials
SGL TECHNOLOGIES GmbH
Soehnleinstrasse 8 | 65201 Wiesbaden/Germany
www.carbonfibers.com