Styrene-Butadiene Copolymer (SBC)
Clear
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Copyright 2002 by Roger D. Corneliussen
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Values are from Modern Plastics Encyclopedia 99.
To jump to a particular property, click on the name below.
Melt
Flow
Melting
Temperature
Glass
Transition
Processing Molding Pressure
Processing Molding Temperature
Compression
Ratio
Mold
Shrinkage
Tensile
Strength
Elongation
Tensile
Yield Strength
Compressive
Strength
Flexural
Strength
Tensile
Modulus
Flexural
Modulus
Izod
Impact Strength
Hardness
Deflection
Temperature
Thermal
Expansion
Thermal
Conductivity
Specific
Gravity
Dielectric
Strength
Water
Absorption
Note:
The ASTM numbers are linked to
their descriptions on the ASTM website.
To go to the description, simply
click on the ASTM number
Melt
Flow
ASTM D1238
(gm/10 min)
6 to 18 gm /10 min
Melting
Temperature degrees C
Tm Crystalline
--- C
Glass
Transition
(C)
Tg (Amorphous)
--- C
Processing
Temperature
Range Degrees F
Extrusion
375 to 425 F for Injection Molding
375 to 427 F for Extrusion
Molding
Pressure Range ( PSI) (ksi)
--- psi
--- ksi
--- MPa
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Mold(Linear)
Shrinkage (in/in)
ASTM D955
0.002 to 0.008 in/in
Tensile
Strength at Break
ASTM D638
--- psi
--- MPa
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Elongation
at break (%)
ASTM D638
20 to 180 %
Tensile
Yield Strength (psi)
ASTM D638
1900 to 4500 psi
13 to 30 MPa
Compressive
Strength (psi)
Rupture or Yield
ASTM
D695
--- psi
--- MPa
To go to Compressive Strength Values,
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Compressive Strength
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Flexural
Strength (psi)
Rupture or Yield
ASTM D790
2700 to 6400 psi
18 to 43 MPa
Tensile
Modulus (psi)
ASTM D638
--- psi
--- GPa
To go to Modulus Values,
click on
Modulus
Compressive
Modulus (psi)
ASTM
D695
--- psi
--- GPa
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Flexural
Modulus (psi)
ASTM D790
At 73 F
150000 to 240000 psi
1 to 1.6 GPa
At 200 F
--- psi
--- GPa
At 250 F
--- psi
--- GPa
At 300 F
--- psi
--- GPa
Izod
Impact (ft-lb/in of notch)
ASTM D256
0.3 to 1.5 to no break ft lb/in of notch
To go to Izod Values,
click on
Izod
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Hardness
Rockwell ASTM D785
---
--
Shore D65 ASTM
D2240/D2583
D60 to 65
Coefficient
of Linear Thermal Expansion
(10 exp-6 )in/in/C
about
65 (10 x exp –6) in/in /C
about 0.000 065 in/in /C
Deflection
Temperature under flexural load (F)
ASTM D648
264 psi ---
140 to 170 F
66 psi ---
--- F
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Thermal
Conductivity
(10 x exp –4)al cm/sec cm2 C
ASTM C177
--- (10 x exp –4) cal cm/sec cm2
--- cal cm/sec cm2
Specific
Gravity
ASTM D792
1.00 to 1.01
To go to Density /Specific Gravity Values,
click on
Density
Water
Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- 0.08 %
Saturation
--- %
Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
--- v/mil
**************************************
Copyright 2002 by Roger D.
Corneliussen
No part of this transmission is to be
duplicated, in any manor, or forwarded by
electronic mail without the express written
permission of Roger D. Corneliussen
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