Abstract
The argon solubility is determined by means of Ultra High Vacuum (UHV) system desorption measurements. The UHV system is capable of measuring the low quantities of gas present in steel. The argon solubility measured is less than 0.1 ppb, irrespective of composition. With these quantities, a significant partial pressure increase of argon in entrapped bubbles is not likely. The formation of new bubbles at other defects present in the steel is not possible either. The measured value is in good agreement with the theoretical solubility limit of argon in steel which contains numerous small non-metallic precipitates.
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