TPI July 2012

products & developments

Ultra-flexible Rilsan HT grade Arkema has expanded its Rilsan ® HT (high temperature) range with an ultra-flexible grade that is close to the flexibility of polyamide extrusion grades. Launched in 2009, Rilsan HT is described as the first flexible polyphthalamide (PPA)-based material to replace metal in high-temperature tubing applications. In the PPA material class, known for its success as a metal substitute as well as its inherent brittleness and restriction to rather rigid injection-moulded parts, the first flexible Rilsan HT grade with an 820 MPa modulus marks a significant step-change. This latest member of the Rilsan HT range shifts the modulus boundaries further downward, close to 500 MPa.

Hydraulic brake line tubing

With this breakthrough in ultra-flexibility, new opportunities for alternatives to metal, rubber or fluorinated polymers in tubing assemblies are becoming a reality. With up to 70 per cent renewable carbon content, Rilsan HT fits many industries’ focus on environmentally sustainable solutions.

“With the ultra-flexible Rilsan HT, Arkema’s researchers have found a way to further lower the modulus down to 520 MPa, thanks to innovative material technologies and Arkema’s long-standing experience in long-chain, h i g h - p e r f o r m a n c e polyamides,” said Michaela Steng, business manager for Rilsan HT.

Rilsan HT offers an optimum property profile

The new ultra-flexible gradeoffers theoptimum properties of long-chain aliphatic Rilsan PA11 and traditional semi- aromatic PPA materials. It combines the flexibility of PA11 with the high- temperature resistance of conventional PPA grades. Other features include long-term resistance to thermo-

Brake booster tubing

oxidation and chemical aging at high temperature, as well as low moisture uptake and cold impact properties when compared with other high-temperature thermoplastics and classical PPA-based resins. Thermal resistance has been improved, with service time at a given temperature further extendedandservice temperature for a given service time increased by up to 10°C when compared with the existing range. Cold impact properties are similar to those of Rilsan PA 11. Rilsan HT’s performance spectrum makes it suited to under-the-hood automotive applications. Its ease of thermoforming and processing on standard equipment for all kinds of tubing technologies (smooth and corrugated tube extrusion, extrusion blow moulding) allows optimum design flexibility. As a result, Rilsan HT has already established itself as a lightweight alternative to metal or rubber tubing assemblies in applications such as blow-by, oil transport, air intake, and vacuum management.

Pipes, tubes and fittings from India Rajsagar Steel is an importer, stockholder and supplier of industrial raw materials in the shape of carbon steel seamless and ERW pipes, spun pipes, hydraulic pipes, boiler tubes, hydraulic cylinders, hollow bars, heavy ship shafts, rods and other ferrous and non-ferrous metals. The company has ready stock of carbon steel pipes and alloy steel pipes up to 1,500 metric tons, with sizes ranging from 12 to 1,000mm diameter, and 5 to 200mm wall thickness. Products include carbon steel seamless and welded pipes, alloy steel seamless pipes, stainless steel seamless and welded pipes, pipe fittings, square pipe, rectangular pipe, heavy ship shafts and hydraulic pipes.

rajsagar steel Pvt ltd – India sales@rajsagar.com www.rajsagar.com

arkema – France michaela.steng@arkema.com www.rilsanht.com

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Tube ProducTs InTernaTIonal July 2012

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