Corrosion & Protection
Pitting, stress corrosion cracking, passivation, and PREN — why materials corrode and how to protect them.
Types of Corrosion
Corrosion is not just corrosion. There are at least five types, and each has its own causes and remedies: pitting eats locally, stress corrosion cracking cracks under tension, intergranular corrosion destroys the grain boundaries. If you can tell them apart, you choose the right material — and the right filler.
Analyse & Artikel →Passivation & PREN
Stainless steel doesn't rust because a wafer-thin, self-healing passive layer of chromium oxide forms on its surface. How well this layer protects against pitting can be estimated with the PREN formula: chromium, molybdenum, and nitrogen make the difference. That's the formula behind every stainless steel choice.
Analyse & Artikel →Corrosion Protection
Corrosion can be stopped in many ways: by material selection, by galvanizing and coating, by cathodic protection, and by clean weld design. The best protection starts before welding — with the question of how each weld will be protected and where moisture can collect.
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