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.
June 30, 2010
Challenges faced by stampers in the quest to produce a robust part are magnified when they form high strength steels. As materials increase in strength, the inherent tensile property variability increases. Using products from the family of grades known as the advanced high-strength steels (AHSS) complicate matters even more, since what is supplied from one mill may not be produced in the same way as that from another mill. Understanding how steel is made sets the stage for a more profitable relationship between the steel supplier and the steel consumer. The certified steel properties that come with the coil are useful, but more information about the sheet metal increases the likelihood of success.
March 9, 2010
Stampers use tests to evaluate tool materials and coatings for wear issues. The main tests are scratching tests, twist compression test, strip-reduction tests, and forming tests.
January 9, 2010
Advanced high-strength steels (AHSS) are used extensively in the automotive industry to help improve crash safety and reduce weight. With the increased strength of AHSS, however, come dramatically increased springback and forming load (and, therefore, contact pressure) compared to milder steel grades.
December 1, 2009
During pilgering, the dies endure extreme amounts of stress. Shot peening is a conventional, economic process for hardening the tooling, but its benefits are limited. Supplementing shot peening with laser shock peening where the stress is highest can help to extend the service life of the tools.
April 28, 2009
Cast iron comes in many different types with different properties. Not all can be welded, cut, or machined in the same way, and some types are better suited for specific applications than others. This article discusses the most common types and how to use them.
November 25, 2008
Aluminum's unique metallurgical properties make it suitable for multiple applications. Aluminum has very high corrosion resistance, Aluminum's specific weight is 2.7 kilogram/dm3 compared to 7.8 kg/dm3 for steel and 8.8 kg/dm3 for copper, and is thermally and electrically conductive.
April 15, 2008
The use of high-strength steels (HSS) and aluminum in automotive and other stamping manufacturing is creating forming challenges for tool and die engineers. Forming simulation software, formerly used to predict conventional failure causes, now also enables the stamping tool and die engineer to simulate secondary operations, including springback to avoid expensive and time-consuming die tryouts.
January 15, 2008
Each metals has its own blend of physical, chemical, and surface properties and characteristics. Knowing about the major work metals (not tool steels), their properties, grades, and characteristics helps to achieve the best results in stamping and forming best results.
January 15, 2008
What is duplex stainless steel?Duplex stainless is fast becoming the material of choice when improved corrosion resistance and mechanical properties are required. Through the combined efforts of the steel producers and the filler metal manufacturers, the market is better equipped to use these...
August 8, 2007
Simply stated, ask. According to a recent Purchasing Magazine survey, buyers say they expect their distributor suppliers to provide them with the lowest prices and highest service levels. Separately, distributors say buyers do press them to provide more information, especially on pricing...
September 12, 2006
With the introduction of stronger safety legislation and increased fuel prices, auto manufacturers must respond with higher car body stiffness for safety and lower body weight for fuel efficiency. The fields of materials development, engineering, and manufacturing are working together to achieve autobody weight reduction with improved crash characteristics.