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HYDEX® 202 & 301 (Rigid Polyurethane Rod & Slab)

A family of amorphous polymers that exhibit many properties of crystalline resins: chemical resistance, dimensional stability, toughness and clarity. These materials are extremely dimensionally stable and are frequently the material of choice when close tolerance and/or difficult geometrical parts are being machined.

Hydex 202 and 301 rod and slab stock are a family of rigid thermoplastic polyurethane products. These products are produced from Isoplast® engineering thermoplastic resins. Isoplast resins are unique in the fact that they are amorphous which will yield properties such as good impact resistance, good dimensional stability and clarity approaching that of polycarbonate, but they also exhibit properties of crystalline polymers by having excellent chemical resistance and low moisture absorption.

Although Hydex 202 and 301 have unique properties which make it a good candidate for metal, glass or ceramic replacement, it can also be used in similar applications where polycarbonate, nylon or acetal are currently used. A wide variety of rod and slab sizes are available. Hydex 301 is transparent a grade, while Hydex 202 is opaque but has higher impact properties than that of Hydex 301.

Product Applications

  • Bearings Filter Housing
  • Gears
  • Industrial Hardware (nuts/bolts)
  • Industrial Processing Equipment
  • Level Gauges
  • Oil and Gas Field Equipment
  • Small Engine Components

Typical Properties

  • Chemical resistance
  • Clarity
  • Dimensional stability
  • Impact resistance
  • Low moisture absorption
  • Toughness
  • Wear resistance
PROPERTY TESTED
ASTM
UNITS
HYDEX 202
HYDEX 301
Physical
        

Tensile Strength
   @ yield
   @ ultimate
Tensile Elongation
   @ yield
   @ rupture
Tensile Modulus
Flexural Strength
Flexural Modulus
Impact Strength,
   Izod (notched)
Hardness, Rockwell


Water Absorption @ 24 hrs
Transmittance


D638
D638

D638
D638
D638
D790
D790

D256
D785
D785
D785
D570
D1003

psi
psi

%
5
psi
psi
psi

ft.lb/in
R
M
L
%
%


9,000
9,000

9
90
260,000
12,000
280,000

10



.15
opaque

10,000
9,000

7
140
310,000
14,000
340,000

2
123
74
109
.19
88
Thermal
.
.
.
.
Deflection Temperature
   unannealed, 66 psi
   unannealed, 264 psi
Deflection Temp
   annealed, 66 psi
   annealed, 264 psi

D648
D648

D648
D648


oF
oF

oF
oF

265
240

290
280

190
170

220
210

Machining Guide

This material can be machined by conventional machine tool processes such as turning, milling and drilling. The basic machining parameters are listed below. Please note that these are guidelines, or starting points and you may be able to optimize them for your tooling set-up.

  • Cutting tools should be high speed steel
  • Carbide tools are not recommended
  • Cutting tools should have a 7° relief on the cutting and back edges
  • Use chip breaker where possible
  • Surface machining speed should be approximately 2,000 inches/min.
  • Tool feed rate should be approximately 1.4 inches/min.
  • Cutting depth should be approximately .005 inches.
  • Cutting coolants are not normally needed.

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