← Glossary

Superduplex Critical Pitting Temperature

The temperature limit above which super duplex steel becomes susceptible to pitting corrosion in a defined test medium.

Physical-Chemical Mechanism of Action

Superduplex steel contains high amounts of chromium and nickel. Under certain conditions, this steel can swell in a defined test medium (e.g., saltwater), leading to pitting corrosion.

Metallurgical Relevance & Welding Risks

If the temperature during welding exceeds this limit, the steel can become susceptible to corrosion processes. This can lead to cracking and loss of mechanical properties.

Workshop Practice & Instructions

Ensure that the welding temperature does not exceed the defined temperature limit for superduplex steel. If necessary, use protective agents or adjust process parameters to control the temperature.

MetallurgieSchweißtechnik

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