Properties 

Styrene-Acrylonitrile Copolymer
/SAN
Molding and Extrusion

Topics   Index

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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)

1.4 gm /10 min

Melting Temperature  degrees C
Tm Crystalline
--- C

Glass Transition (C)
Tg (Amorphous)

100 to 200 C

Processing Temperature Range Degrees F
Extrusion

300 to 400 F for Compression Molding
360 to 550 F for Injection Molding
360 to 450 F for Extrusion

Molding Pressure Range ( PSI) (ksi)
5000 to 20000 psi
5 to 20 ksi
33 to 133 MPa

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Compression Ratio
3

Mold(Linear) Shrinkage (in/in)
ASTM D955
0.003 to 0.005 in/in 

Tensile Strength at Break
ASTM D638
10000 to 11900 psi
67 to 79 MPa

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Elongation at break (%)
ASTM D638
2 to 3 %

Tensile Yield Strength (psi)
ASTM D638
9920 to 12000 psi
66 to 80 MPa

Compressive Strength (psi)
Rupture or Yield
ASTM D695
14000 to 15000 psi
93 to 100 MPa

To go to Compressive Strength Values,
click on
Compressive Strength

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Flexural Strength (psi)
Rupture or Yield
ASTM D790
11000 to 19000 psi
74 to 127 MPa

Tensile Modulus (psi)
ASTM D638
475000 to560000 psi
3.2 to 3.7 GPa

To go to Modulus Values,
click on
Modulus

Compressive Modulus (psi)
ASTM D695
530000 to 560000 psi
3.5 to 3.7 GPa

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Flexural Modulus (psi)
ASTM D790
At 73 F
500000 to 610000 psi
3.3 to 4.1 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

0.4 to 0.63  ft lb/in of notch

To go to Izod Values,
click on
Izod

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Hardness
Rockwell ASTM D785
M80; R83, 75
--
Shore D65 ASTM D2240/D2583
---

Coefficient of Linear Thermal Expansion
(10 exp-6 )in/in/C
65 to 68 (10 x exp 6) in/in /C
0.000 065 to 0.000 068  in/in /C

Deflection Temperature under flexural load (F)
ASTM D648
264 psi ---
203 to 220 F
66 psi  ---
220 to 224 F

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Thermal Conductivity
(10 x exp 4)al cm/sec cm2 C
ASTM C177
3.0 (10 x exp 4) cal cm/sec cm2
0.0003 cal cm/sec cm2

Specific Gravity
ASTM D792
1.06 to 1.08

To go to Density /Specific Gravity Values,
click on
Density

Water Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- 0.15 to 0.25 %
Saturation 
0.5  %

Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
425 v/mil

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Topics   Index

**************************************
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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