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preface to fifteenth edition

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TABLE 10.2<br />

Properties of Commercial Plastics (Continued)<br />

Polyamide<br />

Nylon 6<br />

Nylon 6/6<br />

Properties<br />

Compressive strength, rupture<br />

or 1% yield, 10 3 lb · in 2 13–16 19 15 (yield) 24.9 12.5<br />

Elongation at break, % 30–100 3–6 150–270 60 3 15 40<br />

Flexural modulus at 23C,<br />

10 3 lb · in 2 390 1500 110–320 420 1300 450 150–410<br />

Flexural strength, rupture or<br />

yield, 10 3 lb · in 2 14 33 5–12 17 41 17<br />

Hardness, Rockwell (or Shore) R119 M101 R81–R110 R120 M100 R119 R119<br />

Impact strength(Izod) at<br />

23C, J · m 1 32–53 160 96 <strong>to</strong> no 43–53 117 240 37<br />

break<br />

Tensile modulus, 10 3 lb · in 2 380 1450 550 150–410<br />

Tensile strengthat break,<br />

10 3 lb · in 2 11.8 25 7.5–11 12 28 13.7 7.4–12.4<br />

Tensile yield strength,<br />

10 3 lb · in 2 8 8<br />

Thermal<br />

Burning rate, mm · min 1<br />

Molding and<br />

extrusion<br />

30–35%<br />

glass-fiberreinforced<br />

High-impact<br />

copolymer<br />

Molding<br />

33% glassfiberreinforced<br />

Molybdenum<br />

disulfidefilled<br />

Coefficient of linear thermal<br />

expansion, 10 6 C 80–90 20–30 30–40 80 15–20 54<br />

Deflection temperature under<br />

flexural load (264 lb · in 2 ),<br />

C 68–85 210 45–54 75 249 127 77<br />

Maximum recommended<br />

service temperature, C 107 135<br />

Specific heat, cal · g 1 0.4 0.4<br />

Thermal conductivity,<br />

W·m 1 ·K 1 0.24 0.24 0.24 0.22<br />

Nylon 6/6-<br />

nylon 6<br />

copolymer<br />

Selfextinguishing<br />

Selfextinguishing<br />

Selfextinguishing<br />

Selfextinguishing<br />

Selfextinguishing<br />

Selfextinguishing<br />

Selfextinguishing<br />

10.37

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