HAM-LET introduces PuRight: a new, improved replacement for stainless steel

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 28 October 2014

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(2014), "HAM-LET introduces PuRight: a new, improved replacement for stainless steel", Anti-Corrosion Methods and Materials, Vol. 61 No. 6. https://doi.org/10.1108/ACMM.12861faa.005

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Emerald Group Publishing Limited


HAM-LET introduces PuRight: a new, improved replacement for stainless steel

Article Type: New materials and equipment From: Anti-Corrosion Methods and Materials, Volume 61, Issue 6

PuRight™ material – an enhanced version of 316L Stainless Steel – offers, lower inclusion content, low carbon content for enhanced welding, low sulfur content for enhanced electro-polishing and better corrosion resistance achieved by modification of key elements, such as chromium (Cr), molybdenum (Mo) and nickel (Ni):

Our newly-developed PuRight™ material is far more resistant to corrosion than previously available materials and less likely to pit than conventional 316L stainless steel, said Felix Shestatski, VP Quality, Engineering and R&D at HAM-LET. PuRight™ material is designed to achieve optimum surface quality after mechanical or electro-polishing processes. It is compatible with the SEMI-F20 standard, as well as with ASTM-A276 and ASTM-A479/ASME SA479 standards.

The new product features superior resistance to pitting and crevice corrosion – especially in the presence of free-chloride (Cl−) ions – and with its inherent properties, demonstrates improved performance in strongly oxidizing acid media.

PuRight™ material should prove beneficial for use in applications within the semiconductor industry, where corrosive materials are utilized:

This uniquely-designed alloy has a clear advantage in use for pressure or flow control devices, such as valves, fittings etc. With its excellent welding characteristics and meaningfully-high values of CPT, as well as high ratios of Cr/Fe and CrOx/FeOx, PuRight™ material should prove highly attractive to manufacturers of Ultra High Purity (UHP) products and is particularly well suited for use in the semiconductor industry, Shestatski concluded.

Our UF’s unique flow adjustment mechanism, patent pending no. USA 61/910,79, allows for exceptional flow tuning during operation, said Eran Pintel, VP Marketing and Sales at HAM-LET.

Another advantage of our UF diaphragm valve is its outstanding durability and low maintenance, as it offers over 100 million life cycles. The UF series meets the demand for high-precision diaphragm valves that can perform accurately and repeatedly over an extremely large number of cycles, required by ALD applications, said Pintel.

The optional extended bonnet and cooling fin provide a superb solution when precise and repeatable performance in high-temperature applications is required. The UF series offers superior sealing performance and remarkable durability in hazardous environments, under severe demands of ultra-fast actuation at high purity applications.

Founded in 1950, HAM-LET Group specializes in the design, development production and marketing of high quality instrumentation valves and fittings in a wide variety of materials for high pressure, high temperature and vacuum applications. The company products are used around the world in a wide range of industries, including Energy, Oil & Gas, Ground Turbines, Chemical and Petrochemical, CNG/NGV, Semiconductor, Analytical and others.

More information is available from: http://www.ham-let.com