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.
January 20, 2016
Before a manufacturer can figure out what’s wrong with metal that keeps splitting during a forming process, it needs to understand just why one batch of sheet metal differs from another. The first step is learning the lingo associated with metal creation.
January 18, 2016
Last time we looked at how welding heat influences the heat-affected zone (HAZ) of metals strengthened by three typical hardening processes: solid-solution hardening, cold working, and precipitation hardening. That leaves one critical strengthening process to consider: transformation (martensite)...
December 3, 2015
Metal powders are used in various areas of manufacturing including powder metallurgy and additive manufacturing. But in the welding and metal fabrication arena, weld overlays and thermal spray are by far the most popular applications for metal powders.
December 1, 2015
Many in the metals industry think that stiffness and strength are the same thing. That's not the case, especially when you are talking about metals used in automotive designs.
November 11, 2015
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
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.
August 4, 2015
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.
June 23, 2015
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
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.