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Ensinger PEI

Röhm CyRex® 300 Acrylic-Polycarbonate Alloy  (discontinued **)
Categories: Polymer; Thermoplastic; Acrylic (PMMA); Acrylic/Polycarbonate Alloy; Polycarbonate (PC)

Material Notes: CYREX 300 alloy is suitable for applications where a high degree of heat resistance is necessary. It has a deflection temperature of 253°F and a Vicat softening point of 306°F whereas CYREX 200 alloy has a deflection temperature of 214°F and a Vicat softening point of 277°F.

Information provided by Cyro Industries

The former Cyro/Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.17 g/cc1.17 g/ccASTM D792
Water Absorption <= 0.26 %<= 0.26 %ASTM D570
Linear Mold Shrinkage 0.0040 - 0.0080 cm/cm0.0040 - 0.0080 in/inASTM D551
Melt Flow 1.9 g/10 min
@Load 3.80 kg,
Temperature 230 °C
1.9 g/10 min
@Load 8.38 lb,
Temperature 446 °F
ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 5555ASTM D785
Tensile Strength, Yield 62.7 MPa9090 psiASTM D638
Elongation at Break 73 %73 %ASTM D638
Elongation at Yield 4.7 %4.7 %ASTM D638
Tensile Modulus 2.20 GPa319 ksiASTM D638
Flexural Strength 91.7 MPa13300 psiASTM D790
Flexural Modulus 2.30 GPa334 ksiASTM D790
Izod Impact, Notched  5.66 J/cm
@Thickness 6.35 mm,
Temperature 22.8 °C
10.6 ft-lb/in
@Thickness 0.250 in,
Temperature 73.0 °F
 8.38 J/cm
@Thickness 3.17 mm,
Temperature 22.8 °C
15.7 ft-lb/in
@Thickness 0.125 in,
Temperature 73.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 93.6 µm/m-°C
@Temperature 0.000 - 100 °C
52.0 µin/in-°F
@Temperature 32.0 - 212 °F
ASTM D696
Deflection Temperature at 1.8 MPa (264 psi) 123 °C253 °FASTM D648
Vicat Softening Point 152 °C306 °FASTM D1525
Flammability, UL94 HBHB
 
Descriptive Properties
Chemical Resistance to AcetoneNon ResistantVisual Inspection, immersion 24hrs
Chemical Resistance to AmmoniaLimited ResistanceElongation Retention, immersion 24hrs
 Limited ResistanceResistance under Strength Retention
 Non ResistantElongation Retention, immersion 100hrs
 ResistantStrength Retention, immersion 100hrs
 ResistantStrength Retention, immersion 24hrs
Chemical Resistance to AntifreezeNon ResistantStrength Retention (3100 psi, 170hrs)
Chemical Resistance to Baking Soda PasteResistantVisual Inspection, exposed 92hrs
Chemical Resistance to Bleach 10%ResistantElongation Retention, immersion 24hrs
Chemical Resistance to ButterLimited ResistanceStrength Retention (3100 psi, 24hrs)
 ResistantStain Resistance, 24hrs
Chemical Resistance to Citric Acid Solution (0.1%)ResistantStain Resistance, 24hrs
Chemical Resistance to CoffeeResistantStain Resistance, 24hrs
Chemical Resistance to Diesel FuelLimited ResistanceStrength Retention (1750 psi, 70hrs)
Chemical Resistance to DOP (Phthalate)Non ResistantTime to Craze under Stress (4000 psi)
Chemical Resistance to EthanolLimited ResistanceStrength Retention, immersion 1000hrs
 ResistantStrength Retention, immersion 500hrs
Chemical Resistance to Ethylene GlycolResistantVisual Inspection, 1hr immersion
Chemical Resistance to Fantastic CleanerLimited ResistanceResistance under Strength Retention
 ResistantStrength Retention, immersion 100hrs
 ResistantStrength Retention, immersion 24hrs
 ResistantElongation Retention, immersion 100hrs
 ResistantElongation Retention, immersion 24hrs
Chemical Resistance to FluoridesResistantVisual Inspection, exposed 92hrs
Chemical Resistance to French's MustardResistantStain Resistance, 24hrs
Chemical Resistance to GasolineLimited ResistanceStrength Retention, immersion 500hrs
 Non ResistantStrength Retention, immersion 1000hrs
Chemical Resistance to GlycerinResistantVisual Inspection, immersion 170hrs, 150F
Chemical Resistance to Heavy Duty DetergentResistantVisual Inspection, immersion 1000hrs
Chemical Resistance to HeptaneResistantStrength Retention, immersion 1000hrs
Chemical Resistance to Igepal (1%) SolutionResistantStrength Retention (3750 psi, 70hrs)
Chemical Resistance to IPA Non ResistantStrength Retention (3100 psi, 70hrs)
 ResistantResistance under Strength Retention
Chemical Resistance to IPA/Water 50%ResistantVisual Inspection, 1hr immersion
Chemical Resistance to KeroseneResistantStrength Retention (3100 psi, 10hrs)
Chemical Resistance to LipidsLimited ResistanceStrength Retention (3100 psi, 70hrs)
 ResistantResistance under Strength Retention
Chemical Resistance to LipstickResistantStain Resistance, 24hrs
Chemical Resistance to Octane/Toluene 75%/25%Limited ResistanceStrength Retention, immersion 1000hrs
 ResistantStrength Retention, immersion 500hrs
Chemical Resistance to Rust Inhibitor Veto #4224Non ResistantStrength Retention (3100 psi, 170hrs)
Chemical Resistance to Rust Inhibitor Veto #53359Limited ResistanceStrength Retention (3100 psi, 170hrs)
Chemical Resistance to Soap and WaterResistantElongation Retention, immersion 100hrs
 ResistantElongation Retention, immersion 24hrs
 ResistantResistance under Strength Retention
 ResistantStrength Retention, immersion 100hrs
 ResistantStrength Retention, immersion 24hrs
Chemical Resistance to Sodium Hydroxide (0.5%)ResistantStain Resistance, 24hrs
Chemical Resistance to TeaResistantStain Resistance, 24hrs
Chemical Resistance to ToothpasteResistantVisual Inspection, exposed 92hrs
Chemical Resistance to Transmission FluidResistantStrength Retention (3100 psi, 170hrs)
Chemical Resistance to Vinyl GasketResistantStrength Retention (3100 psi, 24hrs)
Resistance to Palmolive Dishwasher/Water 50%ResistantVisual Inspection, immersion 24hrs

**
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