iMarchapied.com Business Grivel Mont Blanc 

Today we begin with 3mm thick strap iron that we buy in an annealed state; that is, it has been heated and then cooled in a controlled manner that renders it soft enough to work. We choose this particular material because it is very sturdy, it starts becoming brittle at a much lower temperature (-20°C) than normal steel, which changes at –5°C, and it is close in composition to stainless steel so is less affected by corrosion. The line of crampons uses the new technology, which is exclusive to Grivel at this time, called “3 Dimensional Relief Stamping (3DRS)”; this process increases the strength and rigidity, not only of the crampon’s frame, but of each individual point as well.