What type of penetrant should be used on small parts prone to damage from sulfur or chlorine residue?

Using low-sulfur and low-chlorine penetrant materials is the appropriate choice for small parts that are susceptible to damage from sulfur or chlorine residue. These types of penetrants are specifically formulated to minimize any potential harmful effects that sulfur and chlorine could have on sensitive components.

Small parts, especially those made from reactive or high-performance materials, can easily be compromised by the residues left behind by certain penetrants. Low-sulfur and low-chlorine penetrants are designed to reduce the likelihood of corrosion, oxidation, or other chemical reactions that might be exacerbated by the presence of these elements. Therefore, they are ideal for ensuring the integrity and longevity of components subjected to liquid penetrant testing.

In contrast, high-sulfur penetrant materials would pose a risk to parts vulnerable to sulfur. Water-soluble penetrant materials may not provide the same deep penetration and visibility advantages as low-sulfur options for critical inspections. Regular fluorescent penetrants may also include higher sulfur or chlorine levels, thus risking damage to sensitive parts. Hence, selecting low-sulfur and low-chlorine penetrant materials is crucial for safeguarding delicate components during the testing process.