HAM-LET launches enhanced stainless steel

HAM-LET, a global manufacturer of instrumentation valves and fittings for industrial and high-purity applications, is launching PuRight - an enhanced version of 316L stainless steel.

PuRight material 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 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 oxidising acid media.

“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 ultrahigh purity (UHP) products and is particularly well suited for use in the semiconductor industry,” Shestatski concluded.