Polymethylmethacrylate - Acrylic - PMMA General Purpose

Material: Polymethylmethacrylate - Acrylic - PMMA General Purpose
Composition: (CH3-CH2-C-CO-OCH3)n
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0058 0.0059 m3/kmol 353.938 360.04 in3/kmol
Density 1.15 1.2 Mg/m3 71.7922 74.9136 lb/ft3
Energy Content 100 120 MJ/kg 10833.9 13000.6 kcal/lb
Bulk Modulus 4.3 5.1 GPa 0.623662 0.739692 106 psi
Compressive Strength 75 80 MPa 10.8778 11.603 ksi
Ductility 0.02 0.03 0.02 0.03 NULL
Elastic Limit 63 68 MPa 9.13738 9.86257 ksi
Endurance Limit 34.7 37.4 MPa 5.03281 5.42441 ksi
Fracture Toughness 0.8 0.9 MPa.m1/2 0.728037 0.819042 ksi.in1/2
Hardness 200 220 MPa 29.0076 31.9083 ksi
Loss Coefficient 0.0085 0.024 0.0085 0.024 NULL
Modulus of Rupture 68 75 MPa 9.86257 10.8778 ksi
Poisson's Ratio 0.4 0.43 0.4 0.43 NULL
Shear Modulus 0.9 1 GPa 0.130534 0.145038 106 psi
Tensile Strength 50 75 MPa 7.25189 10.8778 ksi
Young's Modulus 2.7 3.2 GPa 0.391602 0.464121 106 psi
Glass Temperature 370 380 K 206.33 224.33 °F
Latent Heat of Fusion kJ/kg BTU/lb
Maximum Service Temperature 355 360 K 179.33 188.33 °F
Melting Point K °F
Minimum Service Temperature 150 200 K -189.67 -99.67 °F
Specific Heat 1400 1450 J/kg.K 1.0834 1.12209 BTU/lb.F
Thermal Conductivity 0.2 0.21 W/m.K 0.374407 0.393127 BTU.ft/h.ft2.F
Thermal Expansion 68 72 10-6/K 122.4 129.6 10-6/°F
Breakdown Potential 19 20 MV/m 482.6 508 V/mil
Dielectric Constant 2.6 3.2 2.6 3.2 NULL
Resistivity 2e+021 1.26e+022 10-8 ohm.m 2e+021 1.26e+022 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 3
Fresh Water 5
Organic Solvents 4
Oxidation at 500C 1
Sea Water 4
Strong Acid 3
Strong Alkalis 3
UV 4
Wear 3
Weak Acid 5
Weak Alkalis 4

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