Metals/Materials Articles

The metals/materials technology area has information on the most commonly used materials in metal fabrication ̶ carbon steels; stainless steels; high-strength, low-alloy steels (HSLAs); and the 6000 series aluminum ̶ and those that aren't as common, such as the red metals, refractory metals, titanium, and magnesium.

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What's that material?

June 12, 2003

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Many alloys—stainless steels, HASTELLOY®, INCONEL®, INCOLOY®, MONEL®, duplex and superduplex alloys—are similar in appearance and easily mixed up after mill test reports (MTRs) and heat stamps are removed in material processing. These mix-ups can have serious consequences to the end user, including product rework, factory downtime, or premature product failure. A single mistake may cost hundreds of thousands of dollars in materials and labor to correct. In addition, any loss of consumer confidence resulting from shipping incorrect material carries incalculable costs.

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Predicting the service life of galvanized steel

May 29, 2003

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Zinc, which has been used to hot-dip-galvanize steel for 250 years, provides 50 to 75 years of corrosion protection in many environments. Empirical data collected about hot-dip galvanized (HDG) steel field performance from 1940 to 1980—in environments ranging from industrial to marine to suburban—indicates that zinc can prevent base steel corrosion more than other surface treatments. Because of zinc's long-lasting protection, projects require no maintenance and therefore no maintenance costs.

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Welding cold-rolled steel to cast iron

April 24, 2003

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Dear Elmer:Is there a way to weld 1018 cold-rolled steel to cast iron? If so, how?JamesOwings Mills, Md.Dear James:You can weld 1018 low-carbon steel to cast iron using shielded metal arc welding (SMAW) and a nickel-based ENiFe electrode.Clean the surfaces before you start. If the joint is highly...

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The structure of metal

April 24, 2003

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Let's start with the obvious: Molten metals have no particular structure. The atoms that make up that metal are just whipping around helter-skelter—at a high rate of speed—with no real orderly, defined pattern.

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Mixed Metals Reactions

April 10, 2003

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Under controlled conditions, aluminum and steel powders can be mixed to create a chemical reaction to produce heat for welding. If you mix these materials under uncontrolled conditions, you will want to call the fire department.

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It's all about why

February 27, 2003

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Talk about a can of worms ... From crystalline structures to phase diagrams and interstitial solutions, from microstructures to allotropic transformations, it sometimes seems that for every question metallurgy can answer, for every problem it can solve, it creates two more.

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Steering toward aluminum Trends in the automotive industry

February 28, 2002

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Advances in the use of aluminum for cars and trucks could pave the way for greater use of the metal in the future.

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Establishing an alloy verification process: SOPs help to prevent material mix-ups

October 11, 2001

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Production or fabrication processes can include dozens of stages to convert raw materials into finished goods. Regardless of the raw material or the finished product, one factor is constant - - most metals look alike.

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Interaction of chemicals used in forming and fabricating

October 11, 2001

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Knowing how chemicals tend to react with one another and how each type of lubricant and coolant commonly used during steel processing tends to behave is a boon when you're trying to fabricate products properly.

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