Page 84 - Shigley's Mechanical Engineering Design

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Materials 59
Table 2–2

The Thermoplastics Source: These data have been obtained from the Machine Design Materials Reference Issue, published by Penton/IPC,
Cleveland. These reference issues are published about every 2 years and constitute an excellent source of data on a great variety of materials.

E Hardness Elongation Dimensional Heat Chemical
S u
Name kpsi Mpsi Rockwell % Stability Resistance Resistance Processing
ABS group 2–8 0.10–0.37 60–110R 3–50 Good * Fair EMST
Acetal group 8–10 0.41–0.52 80–94M 40–60 Excellent Good High M
Acrylic 5–10 0.20–0.47 92–110M 3–75 High * Fair EMS
Fluoroplastic 0.50–7 ··· 50–80D 100–300 High Excellent Excellent MPR †
group
Nylon 8–14 0.18–0.45 112–120R 10–200 Poor Poor Good CEM
Phenylene 7–18 0.35–0.92 115R, 106L 5–60 Excellent Good Fair EFM
oxide
Polycarbonate 8–16 0.34–0.86 62–91M 10–125 Excellent Excellent Fair EMS
Polyester 8–18 0.28–1.6 65–90M 1–300 Excellent Poor Excellent CLMR
Polyimide 6–50 ··· 88–120M Very low Excellent Excellent Excellent † CLMP
Polyphenylene 14–19 0.11 122R 1.0 Good Excellent Excellent M
sulfide
Polystyrene 1.5–12 0.14–0.60 10–90M 0.5–60 ··· Poor Poor EM
group
Polysulfone 10 0.36 120R 50–100 Excellent Excellent Excellent † EFM
Polyvinyl 1.5–7.5 0.35–0.60 65–85D 40–450 ··· Poor Poor EFM
chloride

*Heat-resistant grades available.
†
With exceptions.
C Coatings L Laminates R Resins E Extrusions M Moldings S Sheet F Foams P Press and sinter methods T Tubing

Table 2–3

The Thermosets Source: These data have been obtained from the Machine Design Materials Reference Issue, published by Penton/IPC,
Cleveland. These reference issues are published about every 2 years and constitute an excellent source of data on a great variety of materials.

S u E Hardness Elongation Dimensional Heat Chemical
Name kpsi Mpsi Rockwell % Stability Resistance Resistance Processing
Alkyd 3–9 0.05–0.30 99M* ··· Excellent Good Fair M
Allylic 4–10 ··· 105–120M ··· Excellent Excellent Excellent CM
Amino 5–8 0.13–0.24 110–120M 0.30–0.90 Good Excellent* Excellent* LR
group
Epoxy 5–20 0.03–0.30* 80–120M 1–10 Excellent Excellent Excellent CMR
Phenolics 5–9 0.10–0.25 70–95E ··· Excellent Excellent Good EMR
Silicones 5–6 ··· 80–90M ··· ··· Excellent Excellent CLMR

*With exceptions.
C Coatings L Laminates R Resins E Extrusions M Moldings S Sheet F Foams P Press and sinter methods T Tubing