preface to fifteenth edition

TABLE 10.2
Properties of Commercial Plastics (Continued)
Styrenic
Polystyrene
Acrylonitrile-butadiene-styrene copolymer
Properties
Extrusion
Compressive strength, rupture
or 1% yield, 10 3 lb · in 2 11.5–16 5.2–10 7.2–10 4.5–8 6.5–7.5 14
Elongation at break, % 2–60 20–100 3–20 5–70 5–25
Flexural modulus at 23C,
10 3 lb · in 2 340–470 130–420 300–400 250–350 300–400 340–390 710
Flexural strength, rupture or
yield, 10 3 lb · in 2 8.9–14 4–14 10–13 8–11 9–14 10.5–11.5 15.5
Hardness, Rockwell (or Shore) L80–L108 R75–R115 R100–R115 R85–R105 R100–R120 R103–R109 M85
Impact strength (Izod) at
23C, J · m 1 21–181 133–640 107–347 347–400 160–640 267–283 64
Tensile modulus, 10 3 lb · in 2 320–460 130–380 300–350 230–330 320–400 330–380 740
Tensile strength at break,
10 3 lb · in 2 5–7.8 2.5–8.0 6–7.5 4.8–6.3 5–8 6–6.4 11
Tensile yield strength,
10 3 lb · in 2 5.5–7 4–5.5 4–6
Thermal
Burning rate, mm · min 1 1.3 1.3
Coefficient of linear thermal
expansion, 10 6 C 60–70 60–130 60–93 95–110 65–95 47–53 21
Deflection temperature under
flexural load (264 lb · in 2 ),
C 93–120 77–104
annealed
104–116
annealed
High-impact
96–102
annealed
Maximum recommended
service temperature, C 110
Specific heat, cal g 1 0.3–0.4
Thermal conductivity,
W·m 1 ·K 1 0.19–0.34
Molding
Heatresistant
Heatresistant
Flameretarded
90–107
annealed
Platable
96–102
annealed
20% glassreinforced
99
10.51