← Glossary
Nickel equivalent
Nickel equivalent is a figure that indicates how strongly an alloying element stabilizes austenite. It helps in selecting welding materials and processes.
Physico-Chemical Mechanism of Action
Nickel equivalent measures the influence of various metals on the austenitic structure in the weld metal. It takes into account elements like molybdenum, chromium, and cobalt that behave similarly to nickel.
Metallurgical Relevance & Risks in Welding
A nickel equivalent that is too high can lead to grain coarsening and reduce the toughness of the steel. This increases the risk of cracking and shortens the service life of components.
Workshop Practice & Instructions for Action
When welding alloys with a high nickel equivalent, low heat input profiles should be chosen. If needed, use austenitic steels or alloys and ensure controlled cooling to avoid cracks.
MetallurgieSchweißtechnik