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.
November 11, 2015 | By Mike Barrett
Welding stainless steel is not much different from that required in welding standard carbon steel, with a few exceptions. First, you must exercise more care and control with regard to heating and cooling stainless steel. Second, it’s important to properly match filler metals with the material being welded.
October 26, 2015 | By Madhu Jampala
The advantages of ultrahigh-strength steels are that they can absorb energy at thinner gauges than mild steels, so metal formers can reduce mass by up to 20 percent by using them. This article, converted from a presentation from the Great Designs in Steel 2015 conference, evaluates optimizing geometries for three different forming processes--hot-forming, hot-stamping, roll forming--to solve challenges to forming thin-gauge materials to achieve light-weighting.
September 14, 2015 | By Daniel J. Schaeffler
Not all aluminum sheet is created equal. It pays to know your grades before selecting the type for your job.
September 8, 2015 | By Gerald Davis
Columnist Gerald Davis demonstrates the flexibility of forming tools in CAD modeling by working on the body of a not-ready-for-prime-time tricycle.
September 3, 2015 | By Tim Heston
Is a stainless weld truly passivated, or will some unexpected rust emerge down the road? New testing technology, used in-house by fabricators, helps answer this question
August 10, 2015 | By George Gatto, Jr.
When it comes to working with your plating provider, good communication is key. The more your plater knows, the better the plating results will be.
August 4, 2015 | By Kevin Talbott
The industrial marker is so pervasive that it’s often taken for granted. But it’s really a tool just like any other on the shop floor, and one marker doesn’t work for every application.
July 20, 2015 | By Daniel J. Schaeffler
Ever wonder what makes up low-carbon steel? Material expert Daniel Schaeffler provides a quick overview.
July 7, 2015
Additive manufacturing, otherwise known as 3-D printing, is here to stay. It won’t change the world overnight, but for the right application, an additive process can be a true game-changer.
June 23, 2015 | By William E. Fristad
Press-hardening high-strength steel is an important component in automotive construction to provide crash-worthiness. Several coating options are available today for use on stamped, press-hardened steel parts. However, none of these options are without limitations or challenges, such as cracking, coating transfer, fumes, weldability problems, and the need for shotblasting. A new coating technique has been developed and shows promise. The coating is a very thin (2- to 3-μm-thick), paint-like, rather than metallic, coating. It consists of a siloxane resin acting as the binder with aluminum flake to act as the sacrificial filler, so it meets the requirements to be inorganic and to contain a sacrificial oxidized material.
May 7, 2015 | By Daniel J. Schaeffler
The microstructure of advanced high-strength steels (AHSS) can be tailored to produce specific properties that are engineered for each application. This is why usage of AHSS grades is growing in the automotive industry, and dual-phase (DP) steels are leading the way.
April 24, 2015 | By Bob Capudean
Weld metal strength: It’s a subject that’s often discussed, and just as often misunderstood. To fully consider how strong weld metal will be or how you can strengthen it, you have to think about not only the preweld decisions that influence weld strength, but also the postweld reactions and...
April 6, 2015 | By Bob Capudean
Before we get into nonferrous gas-metal reactions, let’s look at one of the ways you can identify potential cold-cracking problems in steel. In the May/June 2004 issue, we looked at cold cracking—also known as hydrogen cracking, delayed cracking, and under-bead cracking—as it relates to...
April 6, 2015 | By Jeff Heagey
For years fabricators have questioned the need for properly storing opened containers of electrodes in a controlled environment. The cost of holding ovens, as well as the discipline required to use them, has had fabricators second-guessing the benefits of such a practice. Regardless of the type of...
April 1, 2015 | By James Kaszynski
The use of high-strength work materials has dramatically increased the performance requirements on the stamping and forming tools. The selection of the proper tool steel grade at each transfer die station plays a large role in optimizing productivity. The tooling’s performance may be enhanced further with the addition of a coating.