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Coatings of various types are often used to enhance corrosion resistance in metals when metallic properties like strength or durability are needed for the application. There are, of course, also non-metallic solutions often used to protect against corrosion. As with most alternative corrosion materials, there are advantages and disadvantages associated with each. Ceramics Ceramics are…
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The Pitting Resistance Equivalency Number (PREn) is an objective way to do an initial comparison of the relative resistance to corrosion of various metals. It is based on a calculation that considers the weight percentage of alloying elements. PREn = % Cr + (3.3 x % Mo) + (30 x % N) A simple examination…
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Because of its strength, toughness, and resistance to corrosion, nickel is a key component of stainless steels. In fact, the majority of the world’s nickel is consumed in the creation of stainless steel. But where does nickel come from? Most materials don’t just “appear” but, in a way, some of the nickel on earth has done…
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The need for stainless steels that would combine the excellent corrosion resistance of the austenitic types with the ability to be hardened by heat treatment led to the development of a family of stainless steels known as PH types. They can be precipitation (age) hardened at lower temperatures (900°F / 480°C) which helps to minimize…
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Press Release May 31, 2017 METALTEK WISCONSIN CENTRIFUGAL REACHES TWO MILLION HOUR SAFETY MILESTONE WAUKESHA, WISCONSIN – MetalTek International announced today that its Wisconsin Centrifugal Division has surpassed two million man hours worked without a lost time incident at their operations located in Waukesha, Wisconsin. This safety record at MetalTek’s Waukesha site has extended well…
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Press Release January 4, 2017 Rod Anderson Named Vice President – Sales and Marketing of MetalTek International MetalTek International has promoted Rod Anderson into the new position of Vice President – Sales and Marketing. In this position, Mr. Anderson will oversee all global field sales and Marketing functions for the diverse manufacturer. That includes supporting…
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Grade MTEK N-12MV (N30012 / Alloy B) Description Nickel-based alloy for severe corrosion and heat resistance Properties – Why select this material Excellent high temperature and corrosion resistant properties. Oxidation resistance is maintained up to 1400°F / 760°C. Somewhat harder to machine that carbon steel. Applications – Frequent Uses Aircraft Chemical processing Grade MTEK CW-2M…
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Grade MTEK 20-10 (J92603 / HF) Heat Resistant Stainless Steel Description Economical heat resistant grade containing enough chromium and nickel for good resistance to oxidation. Properties – Why select this material Economical heat resistant grade Service limit 1600°F / 870°C Applications – Frequent uses Convection tube sheets Return bends Burner tips Gas burner rings Grade…
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While planned shutdowns are regular occurrences in the life cycle of a petrochemical plant, not all shutdowns are planned. Furnaces can experience unplanned shutdowns. These events are often referred to simply as “shutdowns” but can also be referred to as a “rapid shutdown” (RSD) or “emergency shutdown.” In the event of a rapid shutdown, a…
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Some metals found early popularity primarily because of their appearance. Silver is one such metal. Relatively scarce – but not too scarce – so that it was considered valuable, silver has been an important form of currency, jewelry, and decorative pieces for thousands of years. Only as industry has understood the other interesting and powerful…
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