Documents

Characteristics of Plastic Material

2017.11.7

Typical characteristics of plastic parts applied in a pressure gauges are as shown in the table below. Note that applying overload exceeding the characteristic value should be avoided.

Characteristics Unit Material
Polycarbonate
Sheet
Rigid Polyvinyl
Chloride Sheet
ABS Resin POM PVC PTFE
Parts applied
Window Window Case/Ring Upper Diaphragm Flange Bottom Diaphragm Flange Diaphragm
Tensile strength kgf/㎠ 560-670 570 440 620-700 350-600 100-280
Compressive Strength kgf/㎠ 770 700 700 1300 550-900 120
Bending Strength kgf/㎠ 770-910 940 700 840-980 700-1100 110
Impact Strength kgfcm/cm 50-70 5-8 12-27 5-17 1.7-8.6 16.3
Hardness HR
(Rockwell hardness)
M60-70 R120 R110 M75-95 Shore
70-90
Shore
D50-55
Heat Distortion
Temperature

(18.5kgf/㎠)
130-140 76 89   50-75 55

(4.6kgf/㎠)
125 260
Continuous Operating
Temperature
60 260
Combustibility   Self-extinguishable Self-extinguishable Flammable Flammable Self-extinguishable Nonflammable
Weatherability  
Acidulous  
Strong Acid  
Weak Alkaline  
Strong Alkaline  
Organic Solvent
Resistance
 
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