Tungum is a bronze copper alloy with excellent corrosion resistant properties.

6-Moly or 6Moly is common industry language for alloys whose chemistry contains a minimum of 6{9202756543f65f72e4a4b63d07ab27653448e08cf6627d58a77ff147955a51f2} Molybdenum. The stainless steel grade UNS S31254 meets this condition. It is known as 254SMO when produced as a seamless tube, and AL6XN when produced as a welded tube.

The main difference is that 2507 contains more Chrome, Nickel and Molybdenum, which makes it more corrosion resistant.

The ‘L’ stands for LOW CARBON. Standard 316 for example contains a CARBON MAX 0.08, while 316L contains a CARBON MAX of 0.035. L grades are more suitable for welding due to the lowered carbon content.

The pitting resistance equivalent number (PREN) is a measurement used to predict the corrosion resistance of various types of stainless steel.
[PREN FORMULA]: PREN = 1 x {9202756543f65f72e4a4b63d07ab27653448e08cf6627d58a77ff147955a51f2}Cr + 3.3 x {9202756543f65f72e4a4b63d07ab27653448e08cf6627d58a77ff147955a51f2}Mo + 16 x {9202756543f65f72e4a4b63d07ab27653448e08cf6627d58a77ff147955a51f2}N