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Ri​lsan® BESHV BLK T

is an ultra high viscosity Polyamide 11 grade specifically designed to be extruded into large diameter thick wall pipe. This grade has been specifically engineered to achieve an outstanding balance of properties for Oil Gas piping applications. It offers a cost effective system for non-metallic corrosion free fluid transfer in critical Oil and Gas industry applications. Rilsan® Polyamide 11 is a thermoplastic material permitted by the US Department of Transportation (DOT) under the Code of Federal Regulations (CFR) Title 49, Part 192, for gas distribution piping to be installed and operated at pressures up to and including 250 psi in a design factor of 0.40. The percentage of renewable carbon according to ASTM D6866 (calculated) is 95%.

This material data has been provided by Arkema High Performance Polymers.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Bio-based content

95 %

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ASTM D6866


23.0 °C

1.03 g/cm³

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ISO 1183



Elastic modulus

23.0 °C

1.39 GPa

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ISO 527-1/-2, Conditioned


23.0 °C

50 %

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min., ISO 527-1/-2, nominal, Conditioned

Elongation at yield

23.0 °C

5 %

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ISO 527-1/-2, Conditioned

Tensile strength

23.0 °C

52 MPa

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ISO 527-1/-2, Conditioned

Yield strength

23.0 °C

42 MPa

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ISO 527-1/-2, Conditioned



Melting point

189 °C

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ISO 11357-1/-3, 10°C/min

Technological properties

Application areas

Main applications:

  • Oil and Gas piping applications
  • Natural Gas Distribution- Fittings and Pipes

  • Other


  • This grade is delivered dried in sealed packaging ready to be processed. For best results in gas pipe extrusion, additional desiccant bed drying to maintain/achieve moisture values <0.02% is recommended.

    Shelf Life:

  • Two years from the delivery. For any use above this limit, please refer to our technical services.

  • Processing methods

    Injection Molding:

  • Melt Temperature: (Min / Recommended / Max) 240°C / 270°C / 290°C.
  • Mold: (Temperature) 20-60°C.
  • Drying: (Time / Temperature / Desiccant Bed Dryer) 12 hours / 80°C / -40°C. only necessary for bags opened for more than two hours