Some of the most important elements in an engineering material are also the easiest to overlook. Oxygen, nitrogen, and hydrogen exist in concentrations too small to see, yet they can determine whether a component performs reliably or fails prematurely. Measuring these interstitial gases demands Inert Gas Fusion (IGF) analysis, a benchmark elemental analysis technique for laboratories working with advanced materials that need to maintain tight control over quality and performance.

Defining IGF Analysis

IGF is used to determine the concentration of oxygen, nitrogen, and hydrogen trapped within inorganic materials. Laboratories routinely apply it to raw metals, specialized alloys, ceramics, refractories, and advanced composite materials where precise gas conte

A weld can pass inspection, leave the workshop, and still fail days later. The culprit is often diffusible hydrogen, an invisible element capable of moving through steel long after welding has finished. Its behavior influences crack formation, structural reliability, and compliance with recognized welding standards. Knowing how hydrogen enters a weld, migrates through the metal, and is accurately measured is fundamental to producing long-lasting welding components.

What Is Diffusible Hydrogen?

In arc welding, intense heat causes moisture from electrode fluxes, shielding gases, ambient humidity, and surface contaminants such as oils to dissociate into atomic hydrogen. The molten weld pool readily absorbs these tiny hydrogen atoms before the metal soli

Few manufacturing environments operate under greater pressure than a steel melt shop. Production teams must manage fluctuating raw materials, demanding delivery schedules, and increasingly strict quality expectations, often within the same shift. Maintaining control is only possible with accurate insight into the chemistry of every heat as it progresses through steel production. A carbon and sulfur analyzer provides that visibility, empowering operators to make informed decisions when timing matters most.

Controlling Critical Elements in Steel Production

Carbon content is crucial for determining steel microstructure. During steel production, carefully controlled carbon levels influence the formation of pearlite and cementite phases, which directly affect ha

(more…)