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The OnlineMetals Guide to Plastic

 

 

Plastics are some of the most common materials in today's industrial world. The incredible variety of properties that are available is simply staggering. OnlineMetals carries the most popular items, and through our partnership with our sister company, AIN Plastics, we have access to many more items, including Vespel.

 

OnlineMetals.com currently stocks 10 types of plastic in various shapes and sizes:
Acetal (available in Metal Pack, Plate, Round, Sheet)
Acrylic (available in Case, Sheet)
Fluran (available in Coiled Tube)
GPO-3 (available in Plate, Sheet)
Nylon (available in Metal Pack, Plate, Round, Sheet)
Polycarbonate (available in Plate, Round, Sheet)
PVC (available in Coiled Tube, Shim Stock)
PTFE (available in Metal Pack, PLATE, Round, Sheet)
Tygon (available in Coiled Tube)
UHMW (available in Plate, Round, Sheet)

 

Acetal (Delrin)
Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi?crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties?especially in wet environments. Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close?tolerance machined parts.

 

In high mositure or submerged applications, acetal bearings outperform nylon 4 to 1. Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents.

 

Delrin, a homopolymer acetal, is also manufactured and stocked in rod and plate. It offers slightly higher mechanical properties than Acetron? GP Acetal, but may contain a low?density center, especially in larger cross?sections. Copolymer acetal also offers better chemical resistance than homopolymer acetal.

 

Acetal
Typical Physical Properties
Color Natural and Black
Durometer Hardness, Shore D 85
Tensile Strength 9,500 psi
Water Absorption 24 hrs 0.20%
Tensile Elongation at break 30%
Shear Strength 8,000 psi
Specific Gravity 1.41
Continuous Service Temperature (Max in air) 180° F
Dielectric Strength 420 v/mil

 

Acrylic
Our Acrylic sheet is made by a proprietary continuously manufactured method which was introduced in 1977. Acrylite? acrylic sheet, regardless of how it is manufactured, shares the following dependable, high-quality characteristics that have made Acrylite? acrylic sheet the leader in acrylic sheets.

 

Acrylic (Acrylite FF)
  • Lightweight, rigid, and weather-resistant thermoplastic
  • Half the weight of glass and 43% the weight of aluminum
  • Can be used at emperatures between -30°F up to 160°F
Typical Physical Properties
Color Transparent
Rockwell Hardness M-93
Tensile Strength 10,000 psi
Water Absorption 24 hrs. @ 73°F 0.2%
Compressive Strength (yield) 17,000 psi
Specific Gravity 1.19
Maximum Continuous Service Temperature 160° F (71° C)
Dielectric Strength 430 v/mil
Forming Temperature 300°F
Refractive Index 1.49
Light Transmission, Total 92%

 

Fluran

 

Fluran F-5500-A Severe Environment Tubing
  • Withstands the harshest of chemicals even at high temperatures
  • Provides continuous service up to 400°F
  • Resists sunlight, ozone, and weathering
  • Excellent resistance to corrosive chemicals, oils, fuels, and solvents
  • Typical applications - solvent recovery systems, caustic hot air exhaust and sampling, dry cleaning fluid lines, chemical processing
Typical Physical Properties
Color Black
Durometer Hardness, Shore A, 15 Sec 60
Tensile Strength 1,400 psi
Tear resistance 100 lb-f/inch
Water Absorption 24 hrs. @ 23°C 0.23%
Ultimate Elongation 300%
Brittleness by impact -60°F (-51° C)
Specific Gravity 1.90
Maximum Recommended Operating Temp 400° F (204° C)
Dielectric Strength 500 v/mil
Tensile Modulus @100% elongation 350 psi
Tensile Set 13%

 

GPO-3 (Fiberglass Reinforced Thermoset Polyester)
GPO-3 offers strength, excellent electrical properties and dimensional stability. Various grades feature flame resistance, high carbon tracking, flexibility, and high property retention under heat.

This product will not melt under heat and has excellent overall electrical properties. Since it is a polyester reinforced laminate, this sheet will not shatter. Even at elevated temps this material offers good property retention and dimensional stability. This product is UL rated and NEMA Grade GPO-3.

Companies involved in producing Power Distribution Equipment such as Transformers, Switch Gears, Bus Bars, and Electronic Components, have a need for copper as a conductive material. A necessity within these devices is a non-conductive material - the most prevalent of which is GPO-3.

 

GPO-3 (Fiberglass Reinforced Thermoset Polyester)
  • Good strength
  • Excellent electrical properties
  • Dimensional stability
  • Typical uses - transformers, switch gears, bus bars, electronic components
Typical Physical Properties
Color Red
Tensile Strength 10,000 psi
Flexural Strength 23,200 psi
Compressive Strength 32,800 psi
Shear Strength 14,000 psi
Coefficient of Thermal Expansion 2.0 in/in/°C x 10-5
Thermal Conductivity 1.9 btu/hr/ft2/in/°F

 

Norprene
Used for critical processing applications in the food, dairy, and cosmetic industries.

 

Norprene Food Process Tubing
  • Long flex life in peristaltic pumps
  • Chemically compatible with a wide range of fluids
  • Repeatedly autoclavable
  • Temperature resistant from -75°F to 275;F
  • Typical applications - cosmetic production, food and dairy processing, hot beverage dispensing, sanitizer delivery, chemical transfer
Typical Physical Properties
Color Cream
Durometer Hardness, Shore A, 15 Sec 61
Tear Resistance 120 lb-f/inch
Tensile Strength 1,000 psi
Water Absorption, 24 hrs at 23°C 0.30%
Ultimate Elongation 375%
Brittleness By Impact Temp -75°F (-60° C)
Specific Gravity 0.98
Maximum Recommended Operating Temp 275° F (135° C)
Dielectric Strength 535 v/mil
Tensile Modulus @100% Elongation 410 psi
Tensile Modulus @300% Elongation 800 psi
Tensile Set 47%

 

Nylatron GS
Molybdenum disulphide (MoS2) filled nylon offering improved strength and rigidity. With a lower coefficient of linear thermal expansion than Nylon 101, Nylatron? GS parts maintain better fit and clearances, and have less tendency to seize as bearings.

 

Nylatron GS
Typical Physical Properties
Color Gray-Black
Durometer Hardness, Shore D 85
Tensile Strength 12,500 psi
Water Absorption 24 hrs 0.30%
Tensile Elongation at break 25%
Shear Strength 10,500 psi
Specific Gravity 1.16
Continuous Service Temperature (Max in air) 220° F
Dielectric Strength 350 v/mil

 

Nylon
Using nylon reduces lubrication requirements, eliminates galling, corrosion and pilferage problems, and improves wear resistance and sound dampening characteristics. Nylon has a proven record of outstanding service in a multitude of parts for such diverse fields as paper, textiles, electronics, construction, mining, metalworking, aircraft, food and material handling.

 

Of all the unmodified nylons, Nylon 101 is the strongest, most rigid and has one of the highest melting points. It is commonly specified for screw machined electrical insulators and food contact parts. Nylon 101 natural is FDA, USDA, NSF, and 3A-Dairy compliant.
Nylon 101
  • Good mechanical and electrical properties
  • Ideal of strength and toughness
  • Nylon’s toughness, low coefficient of friction and good abrasion resistance make it an ideal replacement for a wide variety of materials from metal to rubber. It weighs only 1/7 as much as bronze.
Typical Physical Properties
Color Natural - Off-White
Durometer Hardness, Shore D 80
Tensile Strength 12,000 psi
Water Absorption 24 hrs 0.30%
Tensile Elongation at break 50%
Shear Strength 10,000 psi
Specific Gravity 1.15
Continuous Service Temperature (Max in air) 210° F
Dielectric Strength 400 v/mil

 

Polycarbonate

 

Polycarbonate
Typical Physical Properties
Color Clear
Rockwell Hardness M70 / R118
Tensile Strength - Yield 9,000 psi
Tensile Strength - Ultimate 9,500 psi
Water Absorption 24 hrs 0.15%
Elongation 110%
Shear Strength, Ultimate 10,000 psi
Specific Gravity 1.2
Brittle Temperature -200°F
Dielectric Strength 380 v/mil

 

PVC

 

NT-80 Reinforced PVC Tubing
  • Working pressure four times that of non-reinforced PVC tubing
  • White polyester cord embedded into the tube for greater strength
Typical Physical Properties
Color Clear
Durometer Hardness, Shore A, 15 Sec 78
Tensile Strength 2,600 psi
Water Absorption 0.12%
Ultimate Elongation 350%
Brittle Temperature -30°F (-34° C)
Specific Gravity 1.20
Maximum Recommended Operating Temp 165° F (74° C)

 

PTFE
PTFE, commonly called Teflon (polytetrafluoroethylene), provides unmatched chemical, electrical, mechanical, and thermal properties for multiple applications. PTFE is used for gasket and packaging materials in chemical processing equipment, as electrical insulation, as bearings, seals, and piston rings in mechanical applications, especially those requiring anti-stick characteristics, in addition to chemical, heat, corrosion, and impact resistance.

 

PTFE is weather resistant, flexible, non-stick, non-flammable, low dielectric constant, chemically inert, and good at low temperatures.

 

PTFE
Typical Physical Properties
Color White
Durometer Hardness, Shore D 50
Tensile Strength 3,900 psi
Water Absorption 24 hrs 0.05%
Tensile Elongation at break 300%
Density .078 lbs/cubic inch
Compressive Strength 3,500 psi
Dielectric Strength 285 v/mil

 

Tygon
A broad range of flexible tubing products, each engineered to meet specific user needs, including resistance to chemicals, temperature fluctuations and abrasion, as well as high purity and long service life.

 

 

Tygon Flexible Plastic Tubing B-44-3 (Beverage)
  • Clear as glass for easy flow monitoring
  • Broad chemical resistance
  • Non-wetting properties allow easy cleaning and complete drainage
  • Typical applications: chemical processing, food and beverage, metal finishing, pharmaceutical
  • Meets FDA, 3-A and NSF criteria
Typical Physical Properties
Color Clear