Cell Cast Acrylic Solutions for Aerospace PRODUCT SELECTION GUIDE Delivering aircraft transparencies for the demanding aerospace industry. Polycast cell cast acrylic has been manufactured and trusted by the aerospace industry for over 40 years. We offer different formulations designed to address the specific performance needs of various aircraft transparencies. That includes optical clarity and sheet cleanliness unrivaled in the industry. We consistently surpass stringent industry standards and demands including the strict quality levels required by Military Material Specifications. Today in supplying the Polycast brand of materials we are the principal supplier to the United States aerospace industry of acrylic sheet meeting U.S. Military Material Specifications MIL-PRF-5425 MIL-PRF-8184 and MIL-PRF-25690. A comprehensive and experienced team of Spartech material engineers technicians and sales service representatives is available to help you determine the best Polycast acrylic solution for your needs. OUR AEROSPACE SOLUTIONS POLY A is our standard unshrunk acrylic. It is manufactured to a visual and optical aircraft specification ASTM D4802 and is available in clear as well as transparent colors. Common applications are non-critical glazing for commercial helicopters and sport planes. POLY 900 is a lightly-cross linked material formulated to meet British specifications DTD-5592. POLY II is our heat-resistant preshrunk clear and colored acrylic sheet formulated to meet military specification MILPRF-5425. We are qualified to furnish sheets in thicknesses 0.0601.000 to meet this specification. POLY 76 is a crosslinked preshrunk acrylic with excellent resistance to crazing solvent attacks and dimensional change. As one of the few materials approved by the U.S. Military for use as stretched panels MIL-PRF-25690 Poly 76 has numerous sophisticated applications for both military and commercial aircraft. It is also available in transparent colors. Poly 76 meets or exceed
s all requirements of MIL-PRF-8184 Type I and II and Class 1. POLY 84 is a uniquely formulated crosslinked preshrunk acrylic. With lower water absorption it is specifically 2 designed to provide superior craze and solvent resistance for todays changing environment. Poly 84 also meets or exceeds MIL-PRF-8184 Type I and II Class 1 and 2. It is ideal for monolithic windscreens outer laminates and canopies. Also available in transparent colors. POLY 2000 is produced to a military specification covering stretched acrylic sheet specially designed from MIL-PRF-8184 base material. It offers enhanced craze properties and increased crack resistance. It meets or exceeds all requirements of MIL-PRF-25690. Common Applications include fixed wing transparencies helicopter bubbles wing tip lenses edge-lit display panels. POLYCAST UV-SC is a custom cell cast acrylic sheet that blocks out significant amounts of near-Infrared radiation while maintaining high visible light transmission. This acrylic solution offers full UV protection for pilots and aircraft interiors without sacrificing acrylics superior light transmission qualities. Our aircraft-quality monolithic glazing material can be manufactured to MIL-PRF 5425 8184 and 25690 DTD-5592 L-P-391 ASTM D4802 and other specifications. It is available in a wide range of colors andor light transmissions including night vision compatibility. POLY II UVA MIL-PRF-5425 Product Dimensions Thickness2 .125 .150 .185 .220 .250 .312 .375 .500 .625 .750 .875 1.000 Tolerance .030 .060 .080 .100 .8 mm 1.6 mm 2.1 mm 2.6 mm 3.2 mm 3.9 mm 4.8 mm 5.6 mm 6.4 mm 8.0 mm 9.6 mm 12.7 mm 15.9 mm 19.1 mm 22.3 mm 25.4 mm Class1 Inches Metric mm 36 48 914.40 1219.2 A 36 60 914.40 1524.0 36 72 914.40 1828.8 40 50 1016.00 1270.0 A 48 48 1219.20 1219.2 48 60 1219.20 1524.0 48 72 1219.20 1828.8 B 48 96 1219.20 2438.4 B 60 72 1524.00 1828.8 B 60 96 1524.00 2438.4 C 72 72 1828.80 1828.8 C 72 96 1828.80 2438.4 C
Poly II UVT available upon request. CLEAR Standard Items Standard items POLY 76 POLY 84 MIL-PRF-8184 Type MIL-PRF-8184 Type I and II I and II Class 1 may be ordered in standard packages cases and pallets. Class 2 Product Dimensions Non-Standard Items Contact Thickness 2 inchesmm Inches Metric mm Tolerance Class1 36 48 914.40 1219.2 A 36 60 914.40 1524.0 36 72 914.40 1828.8 40 50 1016.00 1270.0 A 48 48 1219.20 1219.2 48 60 1219.20 1524.0 48 72 1219.20 1828.8 B 48 96 1219.20 2438.4 B 60 72 1524.00 1828.8 B 60 96 1524.00 2438.4 C 72 72 1828.80 1828.8 C 72 96 1828.80 2438.4 C .625 .060 .080 .100 .125 .150 .187 .220 .250 .312 .375 .500 15.9 mm 1.6 mm 2.1 mm 2.6 mm 3.2 mm 3.9 mm 4.8 mm 5.6 mm 6.4 mm 8.0 mm 9.6 mm 12.8 mm Up Polycast Customer Service for availability. COLOR Poly 76 Poly 84 are available in most colors manufactured in accordance with MIL-PRF-8184 insofar as the specification is applicable. POLY II is available in most colors manufactured in accordance with MIL-PRF-5425 insofar as the specification is applicable. Please contact Customer Service for further information. 1 Refer to tolerance table on page 6. 2 Intermediate thicknesses are available with special ordering requirements. Available with cutdowns from larger sizes. Tolerance of larger size prevails. SPECIFICATIONS BY PRODUCT RANKED BY PERFORMANCE PRODUCT POLY A PRODUCT DESCRIPTION USA EUROPEAN EQUIVALENT SPECIFICATION As Cast ASTM 4802 AMS-L-P-391 EN 4364 WL5.1412 MIL-PRF 5425 POLY II As Cast Pre-Shrunk POLY 900 Crosslinked As Cast EN 4364 WL5.1412 POLY 76 Crosslinked As Cast Pre-Shrunk MIL-PRF 8184 Class 1 EN4365 WL5.1415 POLY 84 Crosslinked As Cast Lower Water Absorption Pre-Shrunk MIL-PRF 8184 Class 2 EN4365
WL5.1415 POLY 2000 POLY 20001 POLY 20002 Crosslinked and Stretched Pre-Shrunk MIL-PRF 25690 EN4366 WL5.1416 DTD 5592 EN4365 Customers may inquire about other specifications not listed such as France AIR 9106 and Russia GOST 10667-90 3 TYPICAL PROPERTIES POLYCAST POLY A POLY 900 DTD-5592-UK POLY II MIL-PRF-5425 MECHANICAL TEST METHOD UNIT Specific Gravity ASTM D792 1.19 1.19 1.19 Tensile Strength Tensile Strength at Break Elongation at Break Modulus of Elasticity ASTM D638 psi psi 11250 5 450000 11250 5 450000 11250 5 450000 Flexural Strength Rupture Modulus of Elasticity ASTM D790 psi psi 15250 450000 15250 450000 15250 450000 Compressive Strength Yield Modulus of Elasticity ASTM D695 psi psi 18000 440000 18000 440000 18000 440000 Compressive Deformation Under Load 4000 psi 112F 24 hr. ASTM D621 Shear Strength ASTM D732 Impact Strength Izod Milled Notch ASTM D256 ft-lbsin .375 Rockwell Hardness ASTM D785 M98 M98 M98 Barcol Hardness ASTM D2583 50 50 50 Residual Shrinkage Internal Strain ASTM D4802 2.2 2.2 1 OPTICAL TEST METHOD Refractive Index ASTM D542 Luminous Transmittance Haze Yellowness Index ASTM D1003 ASTM G155 Effect of Accelerated Weathering on Appearance Crazing Discoloration Warping ASTM G155 Ultraviolet Transmission 320nm THERMAL MIL-PRF TEST METHOD Max. Recommended Continuous Service Temperature 0.75 0.75 9000 9000 UNIT 1.49 1.49 1.49 92 0.5 0.5 92 0.5 92 0.5 92 0.5 92 0.5 92 0.5 none none none 0 0 0 2000 1000 NA 500 NA NA 2100 1350 NA 1460 1200 NA 2100 1100 psi 1000 NA UNIT F 320 320 320 ASTM D648 264 psi F 203 230 215 F 180 180 180 Hot Forming Temperature Deflection Temperature Under Load Heat Distortion Temperature 0.75 9000 ASTM D1925 After Accelerated Weathering Luminous Transmittance Haze Craze Resistance DRY IPA Lacquer Thinner Sulfuric Acid WET IPA Lacquer Thinner Sulfuric Acid psi Coefficient of Linear Thermal Expansion ASTM D696 ininF 0.000042 0.000042 0.000042 Coefficient of Thermal Conductivity Cenco-Fitch BTU hr Ft2 Fin 1.3
1.3 1.3 Thermal Relaxation 230F 293F MIL-PRF-25690 MIL-PRF-25690 Water Absorption Long-Term 24-Hour Immersion MIL-PRF-8184 ASTM D570 .065 0.2 .065 0.2 .065 0.2 Flammability Burning Rate UL94HB ASTM D635 inmin 1.2 1.2 1.2 Self-ignition Temperature ASTM D1929 F 830 830 BTUlb F 0.35 0.35 0.35 Smoke Density DuPont 900 Therm. An. Cal. ASTM D2843 27 27 Crack Propagation Received at STD Conditions MIL-PRF-25690 lbsin 32 Specific Heat 77F Values vary by thickness. Values shown are for 0.250 thickness. 4 TYPICAL PROPERTIES POLY 76 MIL-PRF-8184 POLY 84 MILPRF-8184 POLY 20001 MIL-PRF-25690 CLASS 1 POLY 76 POLY 20002 MIL-PRF-25690 CLASS 2 POLY 84 MECHANICAL TEST METHOD UNIT Specific Gravity ASTM D792 1.19 1.19 1.19 1.19 Tensile Strength Tensile Strength at Break Elongation at Break Modulus of Elasticity ASTM D638 psi psi 11250 5 450000 11250 5 450000 12100 12100 Flexural Strength Rupture Modulus of Elasticity ASTM D790 psi psi 15250 450000 15250 450000 Compressive Strength Yield Modulus of Elasticity ASTM D695 psi psi 18000 440000 18000 440000 Compressive Deformation Under Load 4000 psi 112F 24 hr. ASTM D621 Shear Strength ASTM D732 Impact Strength Izod Milled Notch ASTM D256 ft-lbsin Rockwell Hardness ASTM D785 Barcol Hardness ASTM D2583 50 50 Residual Shrinkage Internal Strain ASTM D4802 1 OPTICAL TEST METHOD Refractive Index ASTM D542 Luminous Transmittance Haze Yellowness Index ASTM D1003 After Accelerated Weathering Luminous Transmittance Haze ASTM G155 Effect of Accelerated Weathering on Appearance Crazing Discoloration Warping THERMAL Max. Recommended Continuous Service Temperature 0.75 9000 3700 3700 M98 M98 1 UNIT 1.49 1.49 1.49 1.49 92 0.5 92 0.75 91 1.5 91 1.5 91 0.75 91 0.75 90 3.0 90 3.0 ASTM G155 none none 0 0 0 0 MIL-PRF psi 3100 3150 1285 2440 2450 500 3225 3030 1550 2775 2700 1020 3700 3300 4300 3600 2750 2650 3600 3600 ASTM D1925 TEST METHOD Hot Forming Temperature Deflection Temperature Under Load Heat Disto
rtion Temperature 0.75 9000 Ultraviolet Transmission 320nm Craze Resistance DRY IPA Lacquer Thinner Sulfuric Acid WET IPA Lacquer Thinner Sulfuric Acid psi UNIT F 320 320 218 218 ASTM D648 264 psi F 235 225 F 180 180 Coefficient of Linear Thermal Expansion ASTM D696 ininF 0.000042 0.000042 0.000042 0.000042 Coefficient of Thermal Conductivity Cenco-Fitch BTU hr Ft2 Fin 1.3 1.3 1.3 1.3 Thermal Relaxation 230F 293F MIL-PRF-25690 MIL-PRF-25690 3.3 45 3.3 45 Water Absorption Long-Term 24-Hour Immersion MIL-PRF-8184 ASTM-D570 2.6 0.2 1.6 0.2 2.6 0.2 1.6 0.2 Flammability Burning Rate UL94HB ASTM D635 inmin 0.8 0.8 Self-ignition Temperature ASTM D1929 F DuPont 900 Therm. An. Cal. BTUlb F 0.35 0.35 0.35 0.35 Smoke Density ASTM D2843 Crack Propagation Received at STD Conditions MIL-PRF-25690 lbsin 32 2900 2900 Specific Heat 77F Values vary by thickness. Values shown are for 0.250 thickness. 5 TOLERANCES FOR POLY II POLY 76 AND POLY 84 as per MIL-SPEC Standard Thickness1 Class A Class B Class C Inches Millimeters Inches Millimeters Inches Millimeters Inches Millimeters 0.030 0.060 0.080 0.100 0.125 0.150 0.187 0.220 0.250 0.312 0.375 0.500 0.625 0.750 0.875 1.000 1.250 1.500 2.000 2.250 2.500 3.000 3.500 0.762 1.524 2.032 2.540 3.175 3.810 4.750 5.588 6.350 7.925 9.525 12.700 15.875 19.050 22.225 25.400 31.750 38.100 50.800 57.150 63.500 76.200 88.900 0.012 0.012 0.012 0.012 0.015 0.017 0.020 0.023 0.025 0.030 0.035 0.040 0.050 0.050 0.050 0.050 0.063 0.075 0.100 0.113 0.126 0.146 0.150 0.305 0.305 0.305 0.305 0.381 0.432 0.508 0.584 0.635 0.762 0.889 1.016 1.270 1.270 1.270 1.270 1.600 1.905 2.540 2.870 3.200 3.708 4.039 0.020 0.020 0.020 0.020 0.020 0.023 0.025 0.030 0.035 0.040 0.045 0.050 0.050 0.050 0.050 0.063 0.075 0.100 0.113 0.126 0.146 0.159 0.508 0.508 0.508 0.508 0.508 0.584 0.635 0.762 0.889 1.016 1.143 1.270 1.270 1.270 1.270 1.600 1.905 2.540 2.870 3.200 3.708 4.039 0.030 0.030 0.030 0.030 0.035 0.040 0.045 0.050 0.060 0.065 0.
070 0.075 0.094 0.112 0.131 0.168 0.180 0.204 0.219 0.762 0.762 0.762 0.762 0.889 1.016 1.143 1.270 1.524 1.651 1.778 1.905 2.388 2.845 3.327 4.267 4.572 5.182 5.563 Intermediate thicknesses are available. 1 POLY 900 Thickness and Sheet Sizes Thickness Tolerance 36 x 48 40 x 50 48 x 72 48 x 96 60 x 72 60 x 96 72 x 72 72 x 96 .060 1.50 mm .080 2.0 mm .100 2.50 mm .118 3.0 mm .125 3.20 mm .138 3.50 mm .150 3.80 mm .157 4.0 mm .187 4.70 mm .197 5.0 mm .220 5.60 mm .236 6.0 mm .250 6.40 mm .315 8.0 mm .375 9.50 mm .394 10.0 mm .472 12.70 mm .50 12.70 mm .512 13.0 mm .591 15.0 mm .625 15.90 mm .709 18.0 mm .750 19.0 mm .787 20.0 mm .875 22.20 mm .984 25.0 mm .048.072 .165.095 .082.118 .098.138 .105.145 .116.159 .127.173 .133.181 .161.213 .169.225 .191.249 .208.264 .220.280 .280.350 .337.413 .355.433 .429.514 .455.545 .466.558 .544.638 .575.675 .659.759 .697.803 .736.838 .822.928 .9301.038 6 Standard Items Standard items may be ordered in standard packages cases and pallets. Non-Standard Items Contact Polycast Customer Service for availability. Tolerances interpreted from Fig. 2 of DTD-5592A. POLYCAST POLY 2000 STRETCHED ACRYLIC SHEET MIL P 25690 KEY ATTRIBUTES Largest sheet yields lower unit costs S uperior optical quality A vailable in standard PROPERTY REQUIREMENT TYPICAL VALUE Angular Deviation 7 minutes more than 2 from edge 1 3 min. Optical Distortion 14 minute of arc over any 6 3 min.6 0.060 0.220 91 0.221 0.375 90 0.376 0.675 89 .675 88 92.0 91.0 90.0 89.0 0.060 0.220 89 0.221 0.375 88 0.376 0.675 87 .675 86 89.0 90.0 88.0 87.0 Haze Before Weathering After Weathering 3 max. 4 max. 1.5 3.0 Long Term Water Absorption Class 2 2.90 2.79 2.85 Individual value 2300 lbsin32 Average value 2700 lbsin32 2600 3000 2700 3100
As Received 17.8C Individual value 1150 lbsin32 Average value 1250 lbsin32 1200 1500 1300 1600 After Weathering STD Conditions Individual value 2100 lbsin32 Average value 2300 lbsin32 2500 3000 10.0 max. 37.5 min. 1.6 5.0 40.0 50.0 Tensile Strength Individual value 10000 psi Average value 10500 psi 11300 12700 11300 12900 Shear Strength 3000 psi 3200 4200 Dry IPA a Class 1 b Class 2 3000 psi 3000 psi 3700 no craze 4300 no craze Dry Laquer Thinner a Class 1 b Class 2 2500 psi 2500 psi 3300 no craze 3400 3800 Wet IPA a Class 1 b Class 2 2000 psi 2500 psi 2400 3000 3100 4100 Wet Laquer Thinner a Class 1 b Class 2 1750 psi 2000 psi 2 200 3100 2 700 3300 0.2 max. after natural weathering 0.11 Luminous Transmittance Before Weathering thicknesses MANUFACTURING PERFORMANCE O ffer tighter tolerances than standard mil spec - .020 .250 .250 - 10 upon request F lexibility and consistency C ontrol from cell casting to stretching SERVICE P arts cut to your size and shape configurations C radle to grave options I nventory levels exacted to your specifications Technical expertise and After Weathering Crack Propagation Received STD Conditions Thermal Relaxation 110C 145C superior customer support APPLICATIONS Military commercial and general aviation glazing for fixed and rotary wing A ircraft cockpit windows A ircraft canopies W indscreens C abin windows O uter laminates Craze Resistance Dimension Stability Special optical requirements will be considered. 7 We are a leading plastics manufacturer that leverages our knowledge of materials processing and application d evelopment to deliver the highest level of value to our customers. 69 Southfield Ave. Stamford CT 06902 1-800-243-9002 PRODUCT SELECTION GUIDE www.spartech.com Copyright 2020 Spartech LLC. Spartech makes no representations guarantees or warranties of any kind with respect to the information contained in this document about its accuracy suitability for particular applications or the resul
ts obtained or obtainable using the information. Some of the information arises from laboratory work with small-scale equipment which may not provide a reliable indication of performance or properties obtained or obtainable on larger-scale equipment. Values reported as typical or stated without a range do not state minimum or maximum properties consult your sales representative for property ranges and minmax specifications. Processing conditions can cause material properties to shift from the values stated in the information. Spartech makes no warranties or guarantees respecting suitability of either Spartechs products or the information for your process or end-use application. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application and you assume all risk and liability arising from your use of the information andor use or handling of any product. SPARTECH MAKES NO WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE either with respect to the information or product reflected by the information. This literature shall NOT operate as permission recommendation or inducement to practice any patented invention without permission of the patent owner.
