Vespel® SCP-50094
Vespel® SCP-50094
Vespel® S polyimide family of parts and shapes with differing sets of attributes The Vespel® S Family of products are highly durable polyimides and are used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired.
DuPont™ Vespel® SCP-50094 is a proprietary polymer. It is designed for demanding applications that require extensive toughness and chemical resistance.
Applications
- For seals, insulators and more An unfilled grade in the SCP series, Vespel® SCP-5000 uses the same base polyimide as SCP-50094. It delivers major benefits in applications such as insulators requiring dielectric properties or seals and valve seats needing enhanced high-temperature performance and chemical compatibility. To learn more, please visit vespel.dupont.com or contact the nearest DuPont location listed here.
- Jet engines Leading global manufacturers use Vespel® SCP-50094 parts in engine applications, upgrading the wear performance of traditional polyimide parts and replacing metal parts in high temperature environments where traditional polyimides have not been used because of previous temperature limitations. Typical applications include wear pads and strips, thrust washers, bushings, bearings, bumpers and more.
- Other aerospace uses The outstanding wear performance of Vespel® SCP parts can also provide benefits where temperatures are less severe than within the engines.
- Other industries Vespel® SCP-50094 parts are delivering cost and performance benefits in vehicles, as well as industrial equipment requiring higher temperature capabilities
Features & benefits
Superior heat stability
- Superior heat stability
Extended part life
- Vespel® SCP-50094 parts have superior thermal oxidative stability and wear resistance at elevated temperature and can last longer than traditional polyimides in high temperature wear environments.
Metal-like dimensional stability
- Metal-like dimensional stability
Reduced costs
- Replacing metal with Vespel® SCP-50094 parts can save on both initial and lifetime costs. • Lower initial cost than hard-faced or specially treated metallic for parts like bushings. • Less wear on mating high-value components—jet engine stators for example—can sharply cut maintenance costs.
Lighter weight
- Vespel® SCP-50094 parts allow you to save weight by replacing metal in more high temperature environments. They are much stiffer than traditional filled polyimides at elevated temperature. Their low coefficient of thermal expansion allows closer fits and easier-to-manage tolerance stackups for your designs.
Available Sizes
0
0
0
Electrical Property
Dielectric Strength
ASTM D-149
Volts/mil
413
Volume Resistivity
ASTM D-257
Ohm-cm (Ohm-in)
2.18 x 1016 (8.57 x 1015)
ASTM D-257
Ohm-cm (Ohm-in
2.18 x 1016 (8.57 x 1015)
Surface Resistivity
ASTM D-257
Ohm/sq
1.56 x 1017 (6.15 x 1016)
Dielectric Constant, 102 Hz 104 Hz 106 Hz
ASTM D-150
—
5.5 5.4 5.4
Dissipation Factor, 102 Hz 104 Hz 106 Hz
ASTM D-150
—
0.002 0.005 0.002
Other Property
Water Absorption
ASTM D-570
% weight change
0.96 0.06
Specific Gravity
ASTM D-792
—
1.44 1.50
Thermal Property
Heat Deflection Temp in Tin Bismuth, Parallel Perpendicular
ASTM D-648
°C (°F)
334 (634) 336 (637)
Coefficient of Thermal Expansion Parallel Perpendicular
ASTM E-831
m/m·°C (in/in·°F) m/m·°C or m/m·K (in/in·°F)
60.1 x 10–6 (33.4 x 10–6) 34.1 x 10–6 (18.9 x 10–6) 42.7 x 10–6 (23.7 x 10–6)
Thermal Conductivity
ASTM F-433
W/mK (Btu/hr in °F)
0.39 (0.02) 0.40 (0.02) 0.41 (0.02) 0.41 (0.02) 0.41 (0.02) 0.59 (0.03) 0.66 (0.03) 0.58 (0.03)
ASTM F-433
W/m-K (Btu/hr·in °F)
0.59 (0.03) 0.66 (0.03) 0.58 (0.03) 0.39 (0.02) 0.40 (0.02) 0.41 (0.02) 0.41 (0.02) 0.41 (0.02)
Specific Heat
DSC ASTME-1269
J/kg·°C (Btu/lb·°F)
8.96 x 10–5 (0.214) 9.2 x 105 (0.22)
ASTM E-1269, DSC
J/kg·°C (Btu/lb·°F)
9.2 x 105(0.22) 8.96 x 10-5 (0.214)
Coefficent of Thermal Expansion Parallel Perpendicular
ASTM E-831
m/m·°C or m/m·K (in/in·°F)
42.7 x 10–6 (23.7 x 10–6) 60.1 x 10–6 (33.4 x 10–6) 34.1 x 10–6 (18.9 x 10–6)
Wear Property
Coefficient of Friction, Unlubricated, Air 0.88 (25K) PV 3.50 (100K) PV 10.50 (300K) PV
Falex
—
0.253 0.064 0.084 0.25 0.07 0.11
Wear Factor, Unlubricated, Air 0.88 (25K) PV 3.50 (100K) PV 10.50 (300K) PV
Falex
mm-sec/MPa-m-hr (in3 -min/ft-lb-hr)
1.0 x 10–3 (13 x 10–10)
Falex
mm-sec/MPa-m-hr (in3 -min/ft-lb-hr)
1.7 x 10–3
Mechanical Property
Tensile Elongation
ASTM D-638 E-8 Specimen ASTM D-638 D-1708 Specimen
%
2.1 4.6 4.3 13
ASTM D-638 D-1708 Specimen,ASTM D-638 E-8 Specimen
%
4.3 13 2.1 4.6
Young’s Modulus
ASTM D-638 D-1708 Specimen,ASTM D-638 E-8 Specimen
MPa (kpsi)
4,140 (600) 2,350 (340) 6490 (941) 3720 (539)
ASTM D-638 E-8 Specimen ASTM D-638 D-1708 Specimen
MPa (kpsi)
6490 (941) 3720 (539) 4,140 (600) 2,350 (340)
Deformation Under Load after 24 hours
ASTM D-621
% deformation
0.05
Flexural Strength
ASTM D-790
MPa (kpsi)
109 (15.8) 69 (10.0) 200 (29) 96 (14)
Rockwell ―E‖ Hardness
ASTM D-785
—
91 70.4
Deformation Under Load, 10 min Permanent Deformation
ASTM D-621
%
0.03 0.04
Flexural Modulus
ASTM D-790
MPa (kpsi)
5170 (750) 2700 (392) 6,370 (923) 3,540 (514)
Rockwell ―"E" Hardness
ASTM D-785
—
70.4 91
Deformation Under Load, 10 min Permanent Deformation
ASTM D-621
%
0.03 0.04
Compressive Strength
ASTM D-695
MPa (kpsi)
170 (24.7) 77 (11.2) 385 (56) 450 (65)
Compressive Strain, Ultimate
ASTM D-695
% MPa (kpsi)
18 31 41 63
ASTM D-695
MPa (kpsi),%
41 63 18 31
Tensile Strength
ASTM D-638 E-8 Specimen ASTM D-638 D-1708 Specimen
MPa (kpsi)
88 (12.8) 45 (6.6) 124 (18.0) 55 (8.0)
Compressive Creep, 10 hr 100 hr 1000 hr
ASTM D-2990
%
0.03 0.05 0.07 0.04 0.06 0.09
Deformation Under Load after 24 hours
ASTM D-621
% deformation
0.05
Compressive Stress at 10% Strain
ASTM D-695
MPa (kpsi)
168 (24.4) 64 (9.3) 220 (31.9) 81 (11.7)
Technical Resources
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