Polypropylene

Solutions To Today's Engineering Problems

Parts machined from engineering plastics can replace steel, malleable iron, aluminum, brass, stainless steel, rubber and urethane in machinery.

Ensinger offers a wide selection of engineering plastics in rod and slab shapes. Parts machined from these plastics can replace steel, malleable iron, aluminum, brass, stainless steel, rubber and urethane in machinery and plant process equipment.

Compared with the materials they replace, these parts can offer:

  • Noise reduction
  • Low / no maintenance
  • No process contamination -- no lubrication required
  • Increased process equipment reliability
  • Increased plan productivity -- lighter parts can be moved more rapidly
  • Cost savings -- low machining costs and short lead time

Machining plastic is a good choice for:

  • Large or thick section parts that can be molded
  • Intricate or close-tolerance parts
  • Small quantity applications
  • Prototype parts to test a design concept
  • Short lead time

Manufacturers are using engineering polymers today, instead of metal, to gain important competitive advantages. Selecting the best material for a specific use from Ensinger's full line of engineering polymers isn't difficult. All you need is some general information about operating conditions, such as temperature extremes, and impact loading. With these facts in hand, you can match your intended use with the drawing below and determine which of Ensinger's materials is most likely to give you the best performance. Your local Laird Plastics representatives are always ready to provide additional recommendations and engineering data as needed.

Ensinger Engineering Plastics
1. Application: Slide Plate For Turntable
Material Replaced: Lubricated Metal Plate
Material used: TECAMID™ 6/6 Nylon
Benefits:
  • Less noise -- will meet OSHA noise requirements
  • Less lubrication required
  • High reliability -- less equipment downtime
Needs: Durability, lubricity, low coefficient of friction
2. Application: Pulley For Wire Rope
Material Replaced: Steel, die cast aluminum
Material Used: TECAMID&trade 6/6 MDS
Benefits:
  • Increased wire life (4 times) because of lower abrasive wear of MOS filled nylon as compared to steel
  • Maintenance downtime reduced
  • More product reliability
Needs: Good lubricity, low abrasive wear, tensile strength
3. Application: Valve Body For Chemical Processing Tank
Material Replaced: Steel
Material used: TECAPEEK
Benefits:
  • Cost savings -- replacement of high priced exotic corrosion resistant alloys
  • Maintenance downtime reduced due to longer lasting non-corrosive plastics
  • Cost savings -- ease of machining plastics as compared to difficult / expensive machining of exotic metals
4. Application: Protective Viewing Screen For Chemical Bath
Material Replaced: Acrylic Sheet
Material Used: HYDEX® 301
Benefits:
  • High reliability -- longer lasting due to increased chemical resistance of HYDEX® 301 as compared to acrylic
Needs: Clarity, chemical resistance, impact resistance
5. Application: Spray Nozzle Chemical Processing Tank
Material Replaced: Steel
Material Used: TECATRON™
Benefits:
  • Cost savings -- replaced costly, difficult to machine exotic metals
  • High reliability -- less maintenance downtime due to non-corrosive plastic
Needs: Chemical resistance, moderate temperature resistance
6. Application: Temperature Sensor Holder
Material Replaced: Steel
Material Used: Glass-reinforced ULTEM®
Benefits:
  • Corrosion resistance
  • High reliability
  • Cost savings -- faster turnaround time of machining plastic as compared to machining steel
Needs: Chemical resistance, temperature resistance
7. Application: Overhead Conveyor Bearing
Material Replaced: Lubricated Metal Ball Bearing
Material Used: Internal PTFE lubricant -- TECAFORM™ HPV 13
Benefits:
  • No product contamination -- solid plastic
  • Wheel, no lubrication required
  • Cost savings -- use no lubricant
Needs:
Low friction applications: TECAFORM™ HPV 13
High temperature applications: HYDLAR® Z

PRODUCT PROFILES

HYDLAR® Z

A blend of Nylon reinforced with aramid fibers. The aramid filler enhances the physical properties but is not abrasive like glass fibers. Aramid fibers increase the tensile and flexural strength and also increases the impact and heat properties.

Primary Applications:

  • Pulleys
  • Bearings (Heavy load)
  • Canning mandrels
  • Casters
  • High strength wheels
  • Rollers
  • Wear plates

Chemical Resistance

  • Same as nylon

Physical Properties:
Service Temperature 275°F

Tensile Properties:

  • Modulus-1.3 million psi
  • Flexural strength-23,000
  • Compressive strength-19,300

Other Physical Properties:

  • Wear factor-128 to 79
  • Galling of mating surfaces-none

TECAPEEK™

A PEEK (polyethertherketone) resin made by Victrex. It has superior chemical and temperature properties. In some filled grades its tensile properties reach 1.6 million p.s.i.

Primary Applications:

  • Valves
  • Pump parts
  • Flow meters
  • Bearings
  • Valve seats
  • Valve linings

Grades Available:

  • Tecapeek™ -- Unfilled
  • Tecapeek™ GF30 -- 30% Glass reinforce

Chemical Resistance

  • Halogenated hydrocarbons, solvents and refrigerants -- excellent
  • Hydrocarbons, mineral oils, greases, transmission fluids -- excellent
  • Organic chemicals -- excellent to fair
  • Inorganic chemicals -- excellent
  • Water -- excellent

Physical Properties:
Service Temperature 480°F

Flammability:

  • UL-94 V-0
  • Low smoke generation

Other Physical Properties:

  • Excellent tensile strength
  • Excellent wear resistance

TECAFORM™

The stiffest and highest design strength unreinforced plastic. It has a hard, scratch resistant surface, low friction, excellent resistance to hydrocarbons and high fatigue insurance. Machines like brass.

Primary Applications:

  • Gears
  • Bearings
  • Bushings
  • Pulleys
  • Side plates
  • Wear surfaces
  • Chain guides
  • Timing screws

Grades Available:

  • Tecaform™ HPV 13
  • Glass filled Delrin® good mechanical strength

Chemical Resistance

  • Halogenated hydrocarbons -- excellent (fuels, oil, grease)
  • Polar fluids -- good to poor (acids, chlorinated water)

Physical Properties:
Service Temperature 195°F

Coefficient of friction:

  • Static - 0.20
  • Dynamic - 0.35

Other Physical Properties:

  • High strenght and stiffness
  • Low wear
  • Excellent dimensional stability
  • Contains TEFLON® powder for lubricity

TECAMID™ Nylon

The industrial standard for machined plastic. High strength and toughness combined with high temperature properties and excellent resistance to grease, oil and solvents.

Primary Applications:

  • Gears
  • Seals
  • Wear plates
  • Timing screws
  • Washers
  • Bushings
  • Bearings

Grades Available:

  • Tecamid™ 6/6 -- standard grade
  • Tecamid™ 6/12 -- low moisture absorption
  • Tecamid™ ST801
  • Tecamid™ 6/6 MDS -- low surface friction, enhanced lubricity

Chemical Resistance

  • Aliphatic, Aromatic Hydrocarbons -- excellent (fuels, oils, solvents)
  • Organic compounds -- excellent (ketones, esters, aldehydes)
  • Partially halogenated hydrocarbons -- good to poor (methylene chloride, chloroform)

Physical Properties:
Service Temperature 250°F

Coefficient of friction:

  • Tecamid™ 6/6 on Tecamid&trade 6/6 -- Static-0.36, Dynamic-0.11
  • Tecamid™ 6/6 on steel -- Static-0.31, Dynamic-0.17

Other Physical Properties:

  • High wear resistance
  • High tensile strength
  • FDA approved grades

ULTEM®

A polyetherimide made by Sabic Innovative Plastics under the trade name of ULTEM®. It is a high-temperature thermoplastic with many uses in medical applications because of its ability to withstand repeated autoclaving. Its chemical resistance has made it popular in electronic applications.

Primary Applications:

  • Surgical tools
  • Medical equipment
  • Valves
  • Circuit boards
  • Relays
  • Connectors
  • Under hood transportation applications

Grades Available:

  • ULTEM® 1000
  • ULTEM® GF30 30% Glass
  • High tensile grade

Chemical Resistance

  • Fully halogenated hydrocarbons, alcohols, weak aqueous solutions -- excellent to good
  • Fuels, oils and grease -- excellent to good
  • Partially halogenated hydrocarbons and strong alkaline environments -- poor

Physical Properties:
Service Temperature 332°F

Electrical Properties:

  • Arc resistance-128 seconds
  • Volume resistivity-6.7 x 10 E17 ohm-cm
  • Dielectric strength 710 volts/mil @ 1/16 inch
  • Dielectric constant @ 50% RH @332°F-3.01

Flame Resistance:

  • Limiting oxygen index-47
  • UL-94 V-0 @ .016

Other Physical Properties:

  • Withstand repeated autoclaving

DELRIN® and TEFLON® are registered trademarks of the DuPont Company.
HYDLAR® and HYDEX® are registered trademarks of Ensinger Industries, Inc.