3900 Prepreg System
Data Sheet
PRODUCT NOTES

3900-series prepregs are highly-toughened 350°F (177°C) cure systems. It is available in a variety of configurations, including
unidirectional tape for manual or automated tape laying applications, slit-tape-tow for automated fiber placement applications,and plain-weave carbon and glass fabrics.
Mechanically Stable
Mechanical working life of product is over 40 days,
allowing for lay-up of large parts.

Readily Available
AMS products, marked with this icon, are kept instock and ready to ship.

Highly ToughenedHigh strength fiber is combined with particulateinterlayer toughening to reduce delamination andincrease fracture toughness, impact resistance, andenvironmental resistance.

Proven Technology
Products have been used successfully in multiple
applications, including aircraft primary structures,for over 25 years.

Consistency
Uniform resin content and a nobleed resin systemallows for predictable thicknesses and parts.

Customizable Forms
Compatible with multiple applications, including
AFP, ATL, and hand layup. Multiple widths and rollconfigurations available.

AVAILABLE PRODUCT FORMATS

3900 resin is available with numerous types of unidirectional carbon fibers and woven and glass fabrics with Fiber Areal
Weight (FAW) ranging from 70 g/m2 to 300 g/m2 and Resin Content, (RC%) by weight percent, ranging from 34% to 44%.
Unidirectional products can be slit to widths between 1/8” and 60”, and fabric products to widths above 6”. Common productformats include: 1/4”, 1/2”, 1”, and 1.5” AFP spools (UD only); 6”, 500mm, 9”, and 12” ATL rolls; and 24” to full width rolls forhand layup. Product widths of less than 3” require additional lead time.
PART NUMBER

FIBER FORMATFIBER TYPE/STYLE

FAW (GSM)

RC % WEIGHTROLL WIDTH (IN)P2362W-19L (AMS 6891/1)

Unidirectional

T800S

191

35.560P2362W-145

Unidirectional

T800S

145

35.0

36FM6673G-37KL (AMS 6891/2)

Plain Weave

T830H-6K

196

40.0

38

FJ6361F-30HT

Plain Weave

T400H-3K

193

37.0

38

FGF108-29ML

Glass Fabric

108

47.5

42.0

39

FGF7781-29E

Glass Fabric

7781

294

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NEAT RESIN PHYSICAL PROPERTIESRESIN VISCOSITY CURVEPROPERTY

METHODUNITS

VALUE

Density

ASTM D792

g/cc

1.22-1.25

Tg (Dry)

DMA°F (°C)

400 (204)

Tg (Wet)DMA°F (°C)

330 (166)

KIC

ASTM D5045

ksi*in0.5(MPa*m0.5)

1.54 (1.69)

Minimum
Viscosity

ASTM D4440

Poise

21.9

°F (°C)275 (135)

STORAGE LIFE
Out Life*

42 days @ 75 °F (24 °C)

Freezer Life

24 months @ <10 °F (-12 °C)*Tack and drape is optimum at 72F and 65% RH

LAMINA/LAMINATE MECHANICAL PROPERTIES: P2362W-19L (T800S-24K UD)
PROPERTY

SYMBOLMETHOD

UNITS

CTA

RTA

ETW0° Tensile Strength

F1t

ASTM D3039

Ksi (MPa)

411 (2834)

436 (3006)

441 (3041)

90° Tensile Strength

F2t

ASTM D3039

Ksi (MPa)

7.68 (52.9)

8.82 (60.8)

3.84 (26.5)

0° Tensile Modulus

E1t

ASTM D3039

Msi (GPa)

21.6 (149)

21.5 (148)22.2 (153)

90° Tensile Modulus

E2t

ASTM D3039

Msi (GPa)

1.24 (8.5)

1.47 (10.1)

1.17 (8.1)

0° Compressive Strength

F1c

ASTM D6641

Ksi (MPa)282 (1944)

258 (1779)

231 (1593)

90° Compressive Strength

F2c

ASTM D6641Ksi (MPa)44.5 (307)31.3 (216)19.3 (133)0° Compressive Modulus

E1c

ASTM D6641

Msi (GPa)18.8 (130)18.9 (130)20.2 (139)90° Compressive Modulus

E2c

ASTM D6641

Msi (GPa)

1.37 (9.4)

1.24 (8.5)

1.15 (7.9)

In-Plane Shear Strength @ 5%

F12

ASTM D5329

Ksi (MPa)13.1 (90.3)

10.0 (68.9)

6.70 (46.2)

In-Plane Shear Modulus

G12

ASTM D5379

Msi (GPa)0.741 (5.11)

0.571 (3.94)

0.436 (3.01)

Short Beam Shear Strength

SBS

ASTM D2344

Ksi (MPa)20.7 (143)14.0 (96.5)

9.29 (64.1)

Open Hole Compression Strength (QI:25/50/25)

OHC

ASTM D6484

Ksi (MPa)-42.5 (293)37 (255)

Compression After Impact @ 1500 in-lb/in(QI: 25/50/25)

CAI

ASTM D7137

Ksi (MPa)-41 (283)-

Laminate Density

ρ

ASTM D792

g/cc

1.54

Cured Ply Thickness

CPT-

Inches (mm)0.0075 (0.191)

Notes:
CTA: -65°F (-54°C), Ambient
RTA: 72°F (22°C), Ambient
ETW: 180°F (82°C), conditioned at 160°F/85% RH until equilibrium
Tension and compression values are normalized to the indicated CPT values

LAMINA/LAMINATE MECHANICAL PROPERTIES: FM6673G-37KL (T830H-6K PW)
PROPERTY

SYMBOLMETHOD

UNITS

CTA

RTA

ETW

0° Tensile Strength

F1t

ASTM D3039

Ksi (MPa)134 (924)

150 (1034)

135 (931)

90° Tensile Strength

F2t

ASTM D3039

Ksi (MPa)

127 (876)

134 (924)

125 (862)

0° Tensile Modulus

E1t

ASTM D3039

Msi (GPa)

10.3 (71.0)

10.0 (69.0)

10.8 (74.5)

90° Tensile Modulus

E2t

ASTM D3039

Msi (GPa)

9.9 (67.9)

9.9 (68.0)

10.2 (70.3)

0° Compressive Strength

F1c

ASTM D6641

Ksi (MPa)111 (765)

97 (668)

80 (551)

90° Compressive Strength

F2c

ASTM D6641

Ksi (MPa)98 (676)

88 (603)71 (486)0° Compressive Modulus

E1c

ASTM D6641

Msi (GPa)

9.1 (62.8)

9.2 (63.6)

9.4 (64.8)

90° Compressive Modulus

E2c

ASTM D6641

Msi (GPa)

9.0 (62.1)

8.9 (61.5) 9

9.0 (62.2)

In-Plane Shear Strength @ 5%

F12

ASTM D5329

Ksi (MPa)17.4 (120.0)

11.5 (79.3)

8.2 (56.5)

In-Plane Shear Modulus

G12

ASTM D5379

Msi (GPa)

0.66 (4.6)

0.52 (3.6)

0.43 (3.0)

Short Beam Shear Strength

SBS

ASTM D2344

Ksi (MPa)15.3 (105)10.8 (74)

7.0 (49)

Open Hole Compression Strength (QI:25/50/25)

OHC

ASTM D6484

Ksi (MPa)-40.2 (277)32.2 (22)Compression After Impact @ 1500 in-lb/in(QI: 25/50/25)

CAI

ASTM D7137

Ksi (MPa)-43.2 (298)-Laminate Density

ρ

ASTM D792

g/cc

1.51

Cured Ply Thickness

CPT-Inches (mm)0.0086 (0.218)

LAMINA/LAMINATE MECHANICAL PROPERTIES: FJ6361F-30HT (T400-3K PW)
PROPERTY

SYMBOLMETHOD

UNITS

RTA

ETW

90° Tensile Strength

F2t

ASTM D3039

Ksi (MPa)123 (848)-90° Tensile Modulus

E2t

ASTM D3039

Msi (GPa)9.89 (68.2)-90° Compressive Strength

F2c

ASTM D6641

Ksi (MPa)96.1 (663)-90° Compressive Modulus

E2c

ASTM D6641

Msi (GPa)8.82 (60.8)-In-Plane Shear Strength @ 5%

F12

ASTM D5329

Ksi (MPa)

16.3 (112)8.14 (56.1)

In-Plane Shear Modulus

G12

ASTM D5379

Msi (GPa)0.51 (3.52)

0.42 (2.9)

Short Beam Shear Strength

SBS

ASTM D2344

Ksi (MPa)8.91 (61.4)

Open Hole Compression Strength (QI: 25/50/25)

OHC

ASTM D6484

Ksi (MPa)36.3 (250)

Laminate Density

ρ

ASTM D792

g/cc

1.51

Fiber Volume Fraction

Vf

ASTM 3171%49

Cured Ply Thickness

CPT-Inches (mm)0.0089 (0.226)

Notes:
CTA: -65°F (-54°C), Ambient
RTA: 72°F (22°C), Ambient
ETW: 180°F (82°C), conditioned at 160°F/85% RH until equilibrium
Tension and compression values are normalized to the indicated CPT values

34.8 (240)LAMINA/LAMINATE MECHANICAL PROPERTIES: FGF108-29ML (108 Glass PW)
PROPERTY

SYMBOLMETHODUNITSRTAETW

Laminate Density

ρ

ASTM D792

g/cc

1.51

Fiber Volume Fraction

Vf

ASTM 3171%

43.7

Cured Ply Thickness

CPT-Inches (mm)0.0018 (0.0457)

LAMINA/LAMINATE MECHANICAL PROPERTIES: FGF7781-29E (7781 Glass 8HS)
PROPERTY

SYMBOLMETHOD

UNITS

RTA

ETW

90° Tensile Strength

F2t

ASTM D3039

Ksi (MPa)59 (409)45.7 (315)90° Tensile ModulusE2t

ASTM D3039

Msi (GPa)

3.6 (25)

3.2 (22)90° Compressive Strength

F2c

SACMA SRM1R-94

Ksi (MPa)75.9 (524)53.5 (369)

In-Plane Shear Strength

F12

ASTM D5329

Ksi (MPa)

16.5 (114)-In-Plane Shear Modulus

G12

ASTM D5379

Msi (GPa)0.64 (4.4)-Cured Ply Thickness

CPT-Inches (mm)Notes:
CTA: -65°F (-54°C), Ambient
RTA: 72°F (22°C), Ambient
ETW: 180°F (82°C), conditioned at 160°F/85% RH until equilibrium
Tension and compression values are normalized to the indicated CPT values

0.0091 (0.231)

BAGGING PROCEDURE
Notes:
1. During layup, debulk after the first ply and then every 4plies or as needed
2. The vacuum should be checked for leaks before
beginning the cure cycle. The leak rate shall be lessthan 2.0 inches of Hg (7 kPa) over 5 minutes.
Please refer to the SDS for handling and disposal.

CURE CYCLE - AUTOCLAVE
1. Apply full vacuum* to the part.
2. Apply 95 ± 0 psi (655 kPa) autoclave pressure to thelaminate.
3. Vent the vacuum bag when the autoclave pressure
reaches 20psi (138 kPa)
4. Ramp to 350 ± 10°F (177 ± 5°C) at rate of 3.0 ± 2.0 °F(1.7 ± 1.1°C) per minute.
5. Hold for 120 - 180 minutes at 350 ± 10°F (177 ± 5°C).
6. Cool vessel to 140°F (60°C) or lower at a maximum rateof 5°F (2.78°C) per minute before releasing autoclave
pressure.

* Required vacuum level varies depending on elevation. 28” Hg (95 kPa) is therecommended minimum at sea level under average conditions.

The data listed herein are lot averages, for reference purposes only, and are offered AS-IS without warranty. The results are not intended for specification purposes. WARNING: Thisdocument may contain technical data whose export is restricted by the Export Administration Act of 1979, as amended, Title 50, U.S.C., App.2401 et seq. Violations of these export laws aresubject to severe criminal penalties.
3900 Prepreg System_Rev.7.30.2020

www.toraycma.com | (253) 846-1777 | salescma@toraycma.com