TPU Sources

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Chart Converting all the Hardness Scales

There are several scales for measuring rubber hardness. Here is a comparison:

https://www.apstpe.com/media/pdf/Shore-Hardness-Scales.pdf

3D Printing Filaments

  • Shore A hardnes of 90-95 - [1]. Strain to failure [2] of 400%.
  • Ninjaflex 85A [3] and 660% elongation at break
  • Softest on the market - Shore 60A [4]

Metrics

  • 80-100 Shore A is hard, like shoe soles or shopping cart wheels [5]
  • More scales for comparing different objects [6]

Uses

  • Car tires are around 70A [7]
  • Door seals are 50-60A [8]
  • O-rings are 70-80A [9]

TPU Sources

  • Only 2% strain to break? [10]

PVC

  • Flexible PVC is Shore A - 70 - [11]
  • Rigid is 79 Shore D - [12]

TPE vs TPU

Communications

Hi Mid Continent Plastics,

I'm looking for about 1200 lb of TPU regrind, any color, in the Shore A 70-90 range with good elongation and abrasion resistance. This is for 3D printing of rubber tracks for heavy machinery. Do you have something in stock for this purpose? Thanks,Marcin

https://scrapo.com/p/21860/tpu-pellets#

Sources

  • Innovo Plastics, USA, TN - [14]
  • Rauh Plastics - [15] - TPU regrind
  • Ameplasts Dallas - [16]
  • GPN - [17]. Texin - [18]
  • Tarun Bhatia - rolls of TPU -Falcon Papers and Plastics [19]
  • Upcycle Polymers - [20]