← Glossary
International Carbon Equivalent
The International Carbon Equivalent (ICE) indicates how much a steel hardens and is susceptible to cold cracking. It helps in selecting the right welding process.
Physical-Chemical Mechanism of Action
The ICE is based on the carbon content and other additions in the steel. At high ICE, hardening increases and susceptibility to hot cracking rises.
Metallurgical Relevance & Welding Risks
A too-high ICE leads to glass-hard, crack-prone martensite and increases the risk of hot cracking. A too-low ICE can lead to softer, less tough structure.
Workshop Practice & Action Instructions
For steels with ICE > 0.40%, arc welding is dangerous and should be avoided. For ICE < 0.25%, the welding process can be selected. For ICE between 0.25% and 0.40%, careful cooling is required.
MetallurgieSchweißtechnik